0 |
mandatory |
Mandatory keys in this RR |
IETF |
[RFC9460, Section 8] |
1 |
alpn |
Additional supported protocols |
IETF |
[RFC9460, Section 7.1] |
2 |
no-default-alpn |
No support for default protocol |
IETF |
[RFC9460, Section 7.1] |
3 |
port |
Port for alternative endpoint |
IETF |
[RFC9460, Section 7.2] |
4 |
ipv4hint |
IPv4 address hints |
IETF |
[RFC9460, Section 7.3] |
5 |
ech |
RESERVED (held for Encrypted ClientHello) |
IETF |
[RFC9460] |
6 |
ipv6hint |
IPv6 address hints |
IETF |
[RFC9460, Section 7.3] |
7 |
dohpath |
DNS over HTTPS path template |
IETF |
[RFC9461] |
8 |
ohttp |
Denotes that a service operates an Oblivious HTTP target |
IETF |
[RFC9540, Section 4] |
9 |
tls-supported-groups |
Supported groups in TLS |
IETF |
[draft-ietf-tls-key-share-prediction-01, Section 3.1] |
10-65279 |
Unassigned |
|
|
|
65280-65534 |
N/A |
Reserved for Private Use |
IETF |
[RFC9460] |
65535 |
N/A |
Reserved ("Invalid key") |
IETF |
[RFC9460] |