SVCB/HTTPS Builder

Build SVCB and HTTPS resource records with service parameters for enhanced service discovery and connection optimization.

Domain:

Record Type:

Priority:

Target Name:

mandatory Mandatory parameters that must be understood by the client

alpn Application-Layer Protocol Negotiation identifiers (e.g., h2, h3)

no-default-alpn Indicates that no default ALPN should be assumed

port Alternative port number for the service

ipv4hint IPv4 address hints to avoid additional DNS lookups

ech Encrypted Client Hello configuration

ipv6hint IPv6 address hints to avoid additional DNS lookups

example.com. IN HTTPS 1 .

Type: HTTPS

Priority: 1 (Service Mode)

Target: .

Parameters: 0

Status: Valid

HTTPS records typically benefit from port parameter

Priority 0 creates an alias record (AliasMode), priority >0 creates a service record (ServiceMode)
Use "." as target name to indicate the same domain as the owner name
ALPN values should match the protocols actually supported by the service
IP hints can improve connection performance by avoiding additional DNS lookups
ECH parameter enables Encrypted Client Hello for enhanced privacy

Example Configurations