PowerDNS API proxy to query zones for available IPs
https://doc.powerdns.com/authoritative/http-api/index.html
curl https://pdns-api.example.com/fetch/?zone=my.example.com&origin=10.35.54 10.35.54.39
curl https://pdns-api.example.com/fetch/?zone=my.example.com&origin=10.35.54?all=true 10.35.54.39 10.35.54.40 10.35.54.41 10.35.54.45 10.35.54.46 ..