OtterDNS your other nameserver

Setup manual

Everything your primary needs so OtterDNS can serve your zone.

Service addresses

Public nameserverns.otterdns.net
Transfer source address51.79.117.147

Setup

  1. Add the zone in the panel. Give the primary address, or leave it blank and we derive it from your zone's SOA MNAME. A primary that answers AXFR on a non-standard port goes in the optional port field; blank means 53.
  2. Allow AXFR/IXFR from 51.79.117.147 on your primary.
  3. Add ns.otterdns.net to the zone apex NS set and the registrar delegation.
  4. Optional: configure NOTIFY to 51.79.117.147 so updates propagate in seconds.

No TSIG: our published source address authorizes the transfer.

Configuration examples

BIND (named.conf)

zone "example.com" {
    type primary;
    file "example.com.zone";
    allow-transfer { 51.79.117.147; };
    also-notify { 51.79.117.147; };
};

PowerDNS Authoritative (pdns.conf)

allow-axfr-ips=51.79.117.147/32
also-notify=51.79.117.147

Knot DNS (knot.conf)

remote:
  - id: otterdns
    address: 51.79.117.147
acl:
  - id: otterdns_transfer
    address: 51.79.117.147
    action: transfer
zone:
  - domain: example.com
    acl: otterdns_transfer
    notify: otterdns

NSD (nsd.conf)

zone:
    name: "example.com"
    zonefile: "example.com.zone"
    provide-xfr: 51.79.117.147 NOKEY
    notify: 51.79.117.147 NOKEY

Delegation

We remove zones that go 30 days without ns.otterdns.net in their delegation. The zone page shows the exact removal date whenever that countdown is running.