3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Nameserver health for a domain: every NS hostname resolves to an address, SOA serial and primary, minimum-two-nameserver rule, and whether all nameservers share the same parent (single point of failure). Zone reliability...
DNS NS record lookup: the authoritative nameservers for a domain and the detected DNS hosting provider (Cloudflare, Route 53, Google Cloud DNS, Azure, NS1, GoDaddy, Namecheap...). Infrastructure discovery and migration c...
DNS hosting provider detection: who hosts a domain's DNS (Cloudflare, AWS Route 53, Google Cloud DNS, Azure, NS1, GoDaddy, Namecheap, DNSimple, Hurricane Electric, Vercel...) from its nameservers, including multi-provide...