This is a read-only/monitoring "registrar". It does a DNS NS lookup to confirm the nameserver servers are correct. This "registrar" is unable to update/correct the NS servers but will alert you if they are incorrect. A common use of this provider is when the domain is with a registrar that does not have an API.
The DNS-over-HTTPS provider does not require anything in `creds.json`. By default, it uses Google Public DNS however you may configure an alternative RFC 8484 DoH provider.
Some common DoH providers are `cloudflare-dns.com` ([Cloudflare](https://developers.cloudflare.com/1.1.1.1/dns-over-https)), `9.9.9.9` ([Quad9](https://www.quad9.net/about/)), and `dns.google` ([Google Public DNS](https://developers.google.com/speed/public-dns/docs/doh)).