diff --git a/CHANGELOG.md b/CHANGELOG.md
index f727f41..c883a1b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## v1.?.? - 2024-??-?? - ???
 
+* Add support for SVCB and HTTPS records
 * Allow DS records to be specified for managed sub-zones, same as NS
 * Fix CAA rdata parsing to allow values with tags
 
diff --git a/octodns/record/svcb.py b/octodns/record/svcb.py
new file mode 100644
index 0000000..904c912
--- /dev/null
+++ b/octodns/record/svcb.py
@@ -0,0 +1,314 @@
+#
+# This file describes the SVCB and HTTPS records as defined in RFC 9460
+# It also supports the 'ech' SvcParam as defined in draft-ietf-tls-svcb-ech-02
+#
+
+from base64 import b64decode
+from binascii import Error as binascii_error
+from ipaddress import AddressValueError, IPv4Address, IPv6Address
+
+from fqdn import FQDN
+
+from ..equality import EqualityTupleMixin
+from ..idna import idna_encode
+from .base import Record, ValuesMixin, unquote
+from .chunked import _ChunkedValue
+from .rr import RrParseError
+
+SUPPORTED_PARAMS = {}
+
+
+def validate_svcparam_port(svcparamvalue):
+    reasons = []
+    try:
+        port = int(svcparamvalue)
+        if 0 < port > 65535:
+            reasons.append(f'port {port} is not a valid number')
+    except ValueError:
+        reasons.append('port is not a number')
+    return reasons
+
+
+def validate_list(svcparamkey, svcparamvalue):
+    if not isinstance(svcparamvalue, list):
+        return [f'{svcparamkey} is not a list']
+    return list()
+
+
+def validate_svcparam_alpn(svcparamvalue):
+    reasons = validate_list('alpn', svcparamvalue)
+    if len(reasons) != 0:
+        return reasons
+    for alpn in svcparamvalue:
+        reasons += _ChunkedValue.validate(alpn, 'SVCB')
+    return reasons
+
+
+def validate_svcparam_iphint(ip_version, svcparamvalue):
+    reasons = validate_list(f'ipv{ip_version}hint', svcparamvalue)
+    if len(reasons) != 0:
+        return reasons
+    for address in svcparamvalue:
+        try:
+            if ip_version == 4:
+                IPv4Address(address)
+            if ip_version == 6:
+                IPv6Address(address)
+        except AddressValueError:
+            reasons.append(
+                f'ipv{ip_version}hint "{address}" is not a valid IPv{ip_version} address'
+            )
+    return reasons
+
+
+def validate_svcparam_ipv4hint(svcparamvalue):
+    return validate_svcparam_iphint(4, svcparamvalue)
+
+
+def validate_svcparam_ipv6hint(svcparamvalue):
+    return validate_svcparam_iphint(6, svcparamvalue)
+
+
+def validate_svcparam_mandatory(svcparamvalue):
+    reasons = validate_list('mandatory', svcparamvalue)
+    if len(reasons) != 0:
+        return reasons
+    for mandatory in svcparamvalue:
+        if (
+            mandatory not in SUPPORTED_PARAMS.keys()
+            and not mandatory.startswith('key')
+        ):
+            reasons.append(f'unsupported SvcParam "{mandatory}" in mandatory')
+        if mandatory.startswith('key'):
+            reasons += validate_svckey_number(mandatory)
+    return reasons
+
+
+def validate_svcparam_ech(svcparamvalue):
+    try:
+        b64decode(svcparamvalue, validate=True)
+    except binascii_error:
+        return ['ech SvcParam is invalid Base64']
+
+
+def validate_svckey_number(paramkey):
+    try:
+        paramkeynum = int(paramkey[3:])
+        if 7 < paramkeynum > 65535:
+            return [f'SvcParam key "{paramkey}" has wrong key number']
+    except ValueError:
+        return [f'SvcParam key "{paramkey}" has wrong format']
+    return []
+
+
+def parse_rdata_text_svcparamvalue_list(svcparamvalue):
+    return svcparamvalue.split(',')
+
+
+def svcparamkeysort(svcparamkey):
+    if svcparamkey.startswith('key'):
+        return int(svcparamkey[3:])
+    return SUPPORTED_PARAMS[svcparamkey]['key_num']
+
+
+# cc https://datatracker.ietf.org/doc/html/rfc9460#keys
+SUPPORTED_PARAMS = {
+    'no-default-alpn': {'key_num': 2, 'has_arg': False},
+    'alpn': {
+        'key_num': 1,
+        'validate': validate_svcparam_alpn,
+        'parse_rdata_text': parse_rdata_text_svcparamvalue_list,
+    },
+    'port': {'key_num': 3, 'validate': validate_svcparam_port},
+    'ipv4hint': {
+        'key_num': 4,
+        'validate': validate_svcparam_ipv4hint,
+        'parse_rdata_text': parse_rdata_text_svcparamvalue_list,
+    },
+    'ipv6hint': {
+        'key_num': 6,
+        'validate': validate_svcparam_ipv6hint,
+        'parse_rdata_text': parse_rdata_text_svcparamvalue_list,
+    },
+    'mandatory': {
+        'key_num': 0,
+        'validate': validate_svcparam_mandatory,
+        'parse_rdata_text': parse_rdata_text_svcparamvalue_list,
+    },
+    'ech': {'key_num': 5, 'validate': validate_svcparam_ech},
+}
+
+
+class SvcbValue(EqualityTupleMixin, dict):
+
+    @classmethod
+    def parse_rdata_text(cls, value):
+        try:
+            (svcpriority, targetname, *svcparams) = value.split(' ')
+        except ValueError:
+            raise RrParseError()
+        try:
+            svcpriority = int(svcpriority)
+        except ValueError:
+            pass
+        targetname = unquote(targetname)
+        params = dict()
+        for svcparam in svcparams:
+            paramkey, *paramvalue = svcparam.split('=')
+            if paramkey in params.keys():
+                raise RrParseError(f'{paramkey} is specified twice')
+            if len(paramvalue) != 0:
+                params[paramkey] = paramvalue[0]
+                parse_rdata_text = SUPPORTED_PARAMS.get(paramkey, {}).get(
+                    'parse_rdata_text', None
+                )
+                if parse_rdata_text is not None:
+                    params[paramkey] = parse_rdata_text(paramvalue[0])
+            else:
+                params[paramkey] = None
+        return {
+            'svcpriority': svcpriority,
+            'targetname': targetname,
+            'svcparams': params,
+        }
+
+    @classmethod
+    def validate(cls, data, _):
+        reasons = []
+        for value in data:
+            svcpriority = -1
+            if 'svcpriority' not in value:
+                reasons.append('missing svcpriority')
+            else:
+                try:
+                    svcpriority = int(value.get('svcpriority', 0))
+                    if svcpriority < 0 or svcpriority > 65535:
+                        reasons.append(f'invalid priority ' f'"{svcpriority}"')
+                except ValueError:
+                    reasons.append(f'invalid priority "{value["svcpriority"]}"')
+
+            if 'targetname' not in value or value['targetname'] == '':
+                reasons.append('missing targetname')
+            else:
+                targetname = str(value.get('targetname', ''))
+                targetname = idna_encode(targetname)
+                if not targetname.endswith('.'):
+                    reasons.append(
+                        f'SVCB value "{targetname}" missing trailing .'
+                    )
+                if targetname != '.' and not FQDN(targetname).is_valid:
+                    reasons.append(
+                        f'Invalid SVCB target "{targetname}" is not a valid FQDN.'
+                    )
+
+            if 'svcparams' in value:
+                svcparams = value.get('svcparams', dict())
+                if svcpriority == 0 and len(svcparams) != 0:
+                    reasons.append('svcparams set on AliasMode SVCB record')
+                for svcparamkey, svcparamvalue in svcparams.items():
+                    # XXX: Should we test for keys existing when set in 'mandatory'?
+                    if svcparamkey.startswith('key'):
+                        reasons += validate_svckey_number(svcparamkey)
+                        continue
+                    if (
+                        svcparamkey not in SUPPORTED_PARAMS.keys()
+                        and not svcparamkey.startswith('key')
+                    ):
+                        reasons.append(f'Unknown SvcParam {svcparamkey}')
+                        continue
+                    if SUPPORTED_PARAMS[svcparamkey].get('has_arg', True):
+                        reasons += SUPPORTED_PARAMS[svcparamkey]['validate'](
+                            svcparamvalue
+                        )
+                    if (
+                        not SUPPORTED_PARAMS[svcparamkey].get('has_arg', True)
+                        and svcparamvalue is not None
+                    ):
+                        reasons.append(
+                            f'SvcParam {svcparamkey} has value when it should not'
+                        )
+
+        return reasons
+
+    @classmethod
+    def process(cls, values):
+        return [cls(v) for v in values]
+
+    def __init__(self, value):
+        super().__init__(
+            {
+                'svcpriority': int(value['svcpriority']),
+                'targetname': idna_encode(value['targetname']),
+                'svcparams': value.get('svcparams', dict()),
+            }
+        )
+
+    @property
+    def svcpriority(self):
+        return self['svcpriority']
+
+    @svcpriority.setter
+    def svcpriority(self, value):
+        self['svcpriority'] = value
+
+    @property
+    def targetname(self):
+        return self['targetname']
+
+    @targetname.setter
+    def targetname(self, value):
+        self['targetname'] = value
+
+    @property
+    def svcparams(self):
+        return self['svcparams']
+
+    @svcparams.setter
+    def svcparams(self, value):
+        self['svcparams'] = value
+
+    @property
+    def rdata_text(self):
+        params = ''
+        sorted_svcparamkeys = sorted(self.svcparams, key=svcparamkeysort)
+        for svcparamkey in sorted_svcparamkeys:
+            params += f' {svcparamkey}'
+            svcparamvalue = self.svcparams.get(svcparamkey, None)
+            if svcparamvalue is not None:
+                if isinstance(svcparamvalue, list):
+                    params += f'={",".join(svcparamvalue)}'
+                else:
+                    params += f'={svcparamvalue}'
+        return f'{self.svcpriority} {self.targetname}{params}'
+
+    def __hash__(self):
+        return hash(self.__repr__())
+
+    def _equality_tuple(self):
+        params = set()
+        for svcparamkey, svcparamvalue in self.svcparams.items():
+            if svcparamvalue is not None:
+                if isinstance(svcparamvalue, list):
+                    params.add(f'{svcparamkey}={",".join(svcparamvalue)}')
+                else:
+                    params.add(f'{svcparamkey}={svcparamvalue}')
+            else:
+                params.add(f'{svcparamkey}')
+        return (self.svcpriority, self.targetname, params)
+
+    def __repr__(self):
+        return f"'{self.rdata_text}'"
+
+
+class SvcbRecord(ValuesMixin, Record):
+    _type = 'SVCB'
+    _value_type = SvcbValue
+
+
+class HttpsRecord(ValuesMixin, Record):
+    _type = 'HTTPS'
+    _value_type = SvcbValue
+
+
+Record.register_type(SvcbRecord)
+Record.register_type(HttpsRecord)
diff --git a/tests/test_octodns_record_svcb.py b/tests/test_octodns_record_svcb.py
new file mode 100644
index 0000000..6566f16
--- /dev/null
+++ b/tests/test_octodns_record_svcb.py
@@ -0,0 +1,668 @@
+#
+#
+#
+
+from unittest import TestCase
+
+from helpers import SimpleProvider
+
+from octodns.record import Record
+from octodns.record.exception import ValidationError
+from octodns.record.rr import RrParseError
+from octodns.record.svcb import SvcbRecord, SvcbValue
+from octodns.zone import Zone
+
+
+class TestRecordSvcb(TestCase):
+    zone = Zone('unit.tests.', [])
+
+    def test_svcb(self):
+        aliasmode_value = SvcbValue(
+            {'svcpriority': 0, 'targetname': 'foo.example.com.'}
+        )
+        aliasmode_data = {'ttl': 300, 'value': aliasmode_value}
+        a = SvcbRecord(self.zone, 'alias', aliasmode_data)
+        self.assertEqual('alias', a.name)
+        self.assertEqual('alias.unit.tests.', a.fqdn)
+        self.assertEqual(300, a.ttl)
+        self.assertEqual(
+            aliasmode_value['svcpriority'], a.values[0].svcpriority
+        )
+        self.assertEqual(aliasmode_value['targetname'], a.values[0].targetname)
+        self.assertEqual(aliasmode_value['svcparams'], a.values[0].svcparams)
+        self.assertEqual(aliasmode_data, a.data)
+
+        servicemode_values = [
+            SvcbValue(
+                {
+                    'svcpriority': 1,
+                    'targetname': 'foo.example.com.',
+                    'svcparams': {'port': 8002},
+                }
+            ),
+            SvcbValue(
+                {
+                    'svcpriority': 2,
+                    'targetname': 'foo.example.net.',
+                    'svcparams': {'port': 8080},
+                }
+            ),
+        ]
+        servicemode_data = {'ttl': 300, 'values': servicemode_values}
+        b = SvcbRecord(self.zone, 'service', servicemode_data)
+        self.assertEqual('service', b.name)
+        self.assertEqual('service.unit.tests.', b.fqdn)
+        self.assertEqual(300, b.ttl)
+        self.assertEqual(
+            servicemode_values[0]['svcpriority'], b.values[0].svcpriority
+        )
+        self.assertEqual(
+            servicemode_values[0]['targetname'], b.values[0].targetname
+        )
+        self.assertEqual(
+            servicemode_values[0]['svcparams'], b.values[0].svcparams
+        )
+        self.assertEqual(
+            servicemode_values[1]['svcpriority'], b.values[1].svcpriority
+        )
+        self.assertEqual(
+            servicemode_values[1]['targetname'], b.values[1].targetname
+        )
+        self.assertEqual(
+            servicemode_values[1]['svcparams'], b.values[1].svcparams
+        )
+        self.assertEqual(servicemode_data, b.data)
+
+        target = SimpleProvider()
+        # No changes with self
+        self.assertFalse(b.changes(b, target))
+        # Diff in priority causes change
+        other = SvcbRecord(
+            self.zone, 'service2', {'ttl': 30, 'values': servicemode_values}
+        )
+        other.values[0].svcpriority = 22
+        change = b.changes(other, target)
+        self.assertEqual(change.existing, b)
+        self.assertEqual(change.new, other)
+        # Diff in target causes change
+        other.values[0].svcpriority = b.values[0].svcpriority
+        other.values[0].targetname = 'blabla.example.com.'
+        change = b.changes(other, target)
+        self.assertEqual(change.existing, b)
+        self.assertEqual(change.new, other)
+        # Diff in params causes change
+        other.values[0].targetname = b.values[0].targetname
+        other.values[0].svcparams = {'port': '8888'}
+        change = b.changes(other, target)
+        self.assertEqual(change.existing, b)
+        self.assertEqual(change.new, other)
+
+        # __repr__ doesn't blow up
+        a.__repr__()
+        b.__repr__()
+
+    def test_svcb_value_rdata_text(self):
+        # empty string won't parse
+        with self.assertRaises(RrParseError):
+            SvcbValue.parse_rdata_text('')
+
+        # single word won't parse
+        with self.assertRaises(RrParseError):
+            SvcbValue.parse_rdata_text('nope')
+
+        # Double keys are not allowed
+        with self.assertRaises(RrParseError):
+            SvcbValue.parse_rdata_text('1 foo.example.com port=8080 port=8084')
+
+        # priority not int
+        self.assertEqual(
+            {
+                'svcpriority': 'one',
+                'targetname': 'foo.example.com',
+                'svcparams': dict(),
+            },
+            SvcbValue.parse_rdata_text('one foo.example.com'),
+        )
+
+        # valid with params
+        self.assertEqual(
+            {
+                'svcpriority': 1,
+                'targetname': 'svcb.unit.tests.',
+                'svcparams': {'port': '8080', 'no-default-alpn': None},
+            },
+            SvcbValue.parse_rdata_text(
+                '1 svcb.unit.tests. port=8080 no-default-alpn'
+            ),
+        )
+
+        # quoted target
+        self.assertEqual(
+            {
+                'svcpriority': 1,
+                'targetname': 'svcb.unit.tests.',
+                'svcparams': dict(),
+            },
+            SvcbValue.parse_rdata_text('1 "svcb.unit.tests."'),
+        )
+
+        zone = Zone('unit.tests.', [])
+        a = SvcbRecord(
+            zone,
+            'svc',
+            {
+                'ttl': 32,
+                'value': {
+                    'svcpriority': 1,
+                    'targetname': 'svcb.unit.tests.',
+                    'svcparams': {'port': '8080'},
+                },
+            },
+        )
+        self.assertEqual(1, a.values[0].svcpriority)
+        self.assertEqual('svcb.unit.tests.', a.values[0].targetname)
+        self.assertEqual({'port': '8080'}, a.values[0].svcparams)
+
+        # both directions should match
+        rdata = '1 svcb.unit.tests. no-default-alpn port=8080 ipv4hint=192.0.2.2,192.0.2.53 key3333=foobar'
+        record = SvcbRecord(
+            zone, 'svc', {'ttl': 32, 'value': SvcbValue.parse_rdata_text(rdata)}
+        )
+        self.assertEqual(rdata, record.values[0].rdata_text)
+
+        # both directions should match
+        rdata = '0 svcb.unit.tests.'
+        record = SvcbRecord(
+            zone, 'svc', {'ttl': 32, 'value': SvcbValue.parse_rdata_text(rdata)}
+        )
+        self.assertEqual(rdata, record.values[0].rdata_text)
+
+    def test_svcb_value(self):
+        a = SvcbValue(
+            {'svcpriority': 0, 'targetname': 'foo.', 'svcparams': dict()}
+        )
+        b = SvcbValue(
+            {'svcpriority': 1, 'targetname': 'foo.', 'svcparams': dict()}
+        )
+        c = SvcbValue(
+            {
+                'svcpriority': 0,
+                'targetname': 'foo.',
+                'svcparams': {'port': 8080, 'no-default-alpn': None},
+            }
+        )
+        d = SvcbValue(
+            {
+                'svcpriority': 0,
+                'targetname': 'foo.',
+                'svcparams': {'alpn': ['h2', 'h3'], 'port': 8080},
+            }
+        )
+        e = SvcbValue(
+            {
+                'svcpriority': 0,
+                'targetname': 'mmm.',
+                'svcparams': {'ipv4hint': ['192.0.2.1']},
+            }
+        )
+
+        self.assertEqual(a, a)
+        self.assertEqual(b, b)
+        self.assertEqual(c, c)
+        self.assertEqual(d, d)
+        self.assertEqual(e, e)
+
+        self.assertNotEqual(a, b)
+        self.assertNotEqual(a, c)
+        self.assertNotEqual(a, d)
+        self.assertNotEqual(a, e)
+        self.assertNotEqual(b, a)
+        self.assertNotEqual(b, c)
+        self.assertNotEqual(b, d)
+        self.assertNotEqual(b, e)
+        self.assertNotEqual(c, a)
+        self.assertNotEqual(c, b)
+        self.assertNotEqual(c, d)
+        self.assertNotEqual(c, e)
+        self.assertNotEqual(d, a)
+        self.assertNotEqual(d, b)
+        self.assertNotEqual(d, c)
+        self.assertNotEqual(d, e)
+        self.assertNotEqual(e, a)
+        self.assertNotEqual(e, b)
+        self.assertNotEqual(e, c)
+        self.assertNotEqual(e, d)
+
+        self.assertTrue(a < b)
+        self.assertTrue(a < c)
+
+        self.assertTrue(b > a)
+        self.assertTrue(b > c)
+
+        self.assertTrue(c > a)
+        self.assertTrue(c < b)
+
+        self.assertTrue(a <= b)
+        self.assertTrue(a <= c)
+        self.assertTrue(a <= a)
+        self.assertTrue(a >= a)
+
+        self.assertTrue(b >= a)
+        self.assertTrue(b >= c)
+        self.assertTrue(b >= b)
+        self.assertTrue(b <= b)
+
+        self.assertTrue(c >= a)
+        self.assertTrue(c <= b)
+        self.assertTrue(c >= c)
+        self.assertTrue(c <= c)
+
+        # Hash
+        values = set()
+        values.add(a)
+        self.assertTrue(a in values)
+        self.assertFalse(b in values)
+        values.add(b)
+        self.assertTrue(b in values)
+
+    def test_validation(self):
+        # doesn't blow up
+        Record.new(
+            self.zone,
+            'svcb',
+            {
+                'type': 'SVCB',
+                'ttl': 600,
+                'value': {'svcpriority': 1, 'targetname': 'foo.bar.baz.'},
+            },
+        )
+
+        # Wildcards are fine
+        Record.new(
+            self.zone,
+            '*',
+            {
+                'type': 'SVCB',
+                'ttl': 600,
+                'value': {'svcpriority': 1, 'targetname': 'foo.bar.baz.'},
+            },
+        )
+
+        # missing priority
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {'targetname': 'foo.bar.baz.'},
+                },
+            )
+        self.assertEqual(['missing svcpriority'], ctx.exception.reasons)
+
+        # invalid priority
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 'foo',
+                        'targetname': 'foo.bar.baz.',
+                    },
+                },
+            )
+        self.assertEqual(['invalid priority "foo"'], ctx.exception.reasons)
+
+        # invalid priority (out of range)
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 100000,
+                        'targetname': 'foo.bar.baz.',
+                    },
+                },
+            )
+        self.assertEqual(['invalid priority "100000"'], ctx.exception.reasons)
+
+        # missing target
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {'type': 'SVCB', 'ttl': 600, 'value': {'svcpriority': 1}},
+            )
+        self.assertEqual(['missing targetname'], ctx.exception.reasons)
+
+        # invalid target
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {'svcpriority': 1, 'targetname': 'foo.bar.baz'},
+                },
+            )
+        self.assertEqual(
+            ['SVCB value "foo.bar.baz" missing trailing .'],
+            ctx.exception.reasons,
+        )
+
+        # falsey target
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {'svcpriority': 1, 'targetname': ''},
+                },
+            )
+        self.assertEqual(['missing targetname'], ctx.exception.reasons)
+
+        # target must be a valid FQDN
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'bla foo.bar.com.',
+                    },
+                },
+            )
+        self.assertEqual(
+            ['Invalid SVCB target "bla foo.bar.com." is not a valid FQDN.'],
+            ctx.exception.reasons,
+        )
+
+        # target can be root label
+        Record.new(
+            self.zone,
+            'foo',
+            {
+                'type': 'SVCB',
+                'ttl': 600,
+                'value': {'svcpriority': 1, 'targetname': '.'},
+            },
+        )
+
+        # Params can't be set for AliasMode
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 0,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'port': '8000'},
+                    },
+                },
+            )
+        self.assertEqual(
+            ['svcparams set on AliasMode SVCB record'], ctx.exception.reasons
+        )
+
+        # Unknown param
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'blablabla': '222'},
+                    },
+                },
+            )
+        self.assertEqual(['Unknown SvcParam blablabla'], ctx.exception.reasons)
+
+        # Port number invalid
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'port': 100000},
+                    },
+                },
+            )
+        self.assertEqual(
+            ['port 100000 is not a valid number'], ctx.exception.reasons
+        )
+
+        # Port number not an int
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'port': 'foo'},
+                    },
+                },
+            )
+        self.assertEqual(['port is not a number'], ctx.exception.reasons)
+
+        # no-default-alpn set
+        Record.new(
+            self.zone,
+            'foo',
+            {
+                'type': 'SVCB',
+                'ttl': 600,
+                'value': {
+                    'svcpriority': 1,
+                    'targetname': 'foo.bar.com.',
+                    'svcparams': {'no-default-alpn': None},
+                },
+            },
+        )
+
+        # no-default-alpn has value
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'no-default-alpn': 'foobar'},
+                    },
+                },
+            )
+        self.assertEqual(
+            ['SvcParam no-default-alpn has value when it should not'],
+            ctx.exception.reasons,
+        )
+
+        # alpn is broken
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'alpn': ['h2', '😅']},
+                    },
+                },
+            )
+        self.assertEqual(['non ASCII character in "😅"'], ctx.exception.reasons)
+
+        # svcbvaluelist that is not a list
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {
+                            'ipv4hint': '192.0.2.1,192.0.2.2',
+                            'ipv6hint': '2001:db8::1',
+                            'mandatory': 'ipv6hint',
+                            'alpn': 'h2,h3',
+                        },
+                    },
+                },
+            )
+        self.assertEqual(
+            [
+                'ipv4hint is not a list',
+                'ipv6hint is not a list',
+                'mandatory is not a list',
+                'alpn is not a list',
+            ],
+            ctx.exception.reasons,
+        )
+
+        # ipv4hint
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {
+                            'ipv4hint': ['192.0.2.0', '500.500.30.30']
+                        },
+                    },
+                },
+            )
+        self.assertEqual(
+            ['ipv4hint "500.500.30.30" is not a valid IPv4 address'],
+            ctx.exception.reasons,
+        )
+
+        # ipv6hint
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {
+                            'ipv6hint': ['2001:db8:43::1', 'notanip']
+                        },
+                    },
+                },
+            )
+        self.assertEqual(
+            ['ipv6hint "notanip" is not a valid IPv6 address'],
+            ctx.exception.reasons,
+        )
+
+        # mandatory
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {
+                            'mandatory': ['ipv4hint', 'unknown', 'key4444']
+                        },
+                    },
+                },
+            )
+        self.assertEqual(
+            ['unsupported SvcParam "unknown" in mandatory'],
+            ctx.exception.reasons,
+        )
+
+        # ech
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {'ech': ' dG90YWxseUZha2VFQ0hPcHRpb24'},
+                    },
+                },
+            )
+        self.assertEqual(
+            ['ech SvcParam is invalid Base64'], ctx.exception.reasons
+        )
+
+        # broken keyNNNN format
+        with self.assertRaises(ValidationError) as ctx:
+            Record.new(
+                self.zone,
+                'foo',
+                {
+                    'type': 'SVCB',
+                    'ttl': 600,
+                    'value': {
+                        'svcpriority': 1,
+                        'targetname': 'foo.bar.com.',
+                        'svcparams': {
+                            'key100000': 'foo',
+                            'key3333': 'bar',
+                            'keyXXX': 'foo',
+                        },
+                    },
+                },
+            )
+        self.assertEqual(
+            [
+                'SvcParam key "key100000" has wrong key number',
+                'SvcParam key "keyXXX" has wrong format',
+            ],
+            ctx.exception.reasons,
+        )
diff --git a/tests/zones/unit.tests.tst b/tests/zones/unit.tests.tst
index 82549ea..5c08baf 100644
--- a/tests/zones/unit.tests.tst
+++ b/tests/zones/unit.tests.tst
@@ -55,3 +55,14 @@ aaaa        600   IN  AAAA  2601:644:500:e210:62f8:1dff:feb8:947a
 ; CNAME Records
 cname       300   IN  CNAME   unit.tests.
 included    300   IN  CNAME   unit.tests.
+
+; SVCB and HTTPS records
+svcb-alias 300 IN SVCB 0 alias-target.unit.test.
+
+svcb-service 300 IN SVCB 1 . ipv4hint=192.0.2.4 port=9000
+svcb-service 300 IN SVCB 2 svcb-target.unit.test. port=9001
+
+https-alias 300 IN HTTPS 0 alias-target.unit.test.
+
+https-service 300 IN HTTPS 1 . ipv4hint=192.0.2.4 port=9000
+https-service 300 IN HTTPS 2 svcb-target.unit.test. port=9001