Features Dualstack: Supports queries via both IPv4 and native IPv6. Support for A, AAAA, ALIAS, CNAME, CAA, MX, NS, TXT, SRV, SSHFP, SPF, RP, NAPTR, HINFO, LOC and PTR records. Smart mode IPv4 and IPv6 reverse zones simplifies reverse zones. Slave support Multiple reverse zone formats: Standard, RFC 4183, RFC 2317, DeGroot. Geographically diverse servers. Sanity checking for delegation for both forward and reverse zones. Basic syntax checking for fields. Multiple domains per account. Recent Additions ALIAS Record Support We've added the ALIAS record type! After many requests, we have added this much requested feature.. CAA Record Support We've added the CAA record type! After many requests, we have completed the backend upgrades required to enable the CAA record type. Dynamic DNS Additions Dynamic TXT Records Dynamic TXT records have been added! We've received requests for dynamic TXT records for use with Let's Encrypt Certificates. We've added them in using the same basic ddns syntax that we already provide with the difference being the use of 'txt=' in place of 'myip='. You will need to create the dynamic TXT record from within the dns.he.net interface before you will be able to make updates. You will not be able to dynamically create and delete these TXT records as doing so would subsequently remove your ddns key associated with the record. NOTE: A propagation delay of up to 5 minutes may be experienced as the TTL of the record will need to expire and refresh. You should wait before requesting DNS01 validation once you have updated the record.