4 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.
A record of voip.<domain>: looks up the voip host under the domain you give (A via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like voip without enumerating...
AAAA record of voip.<domain>: looks up the voip host under the domain you give (AAAA via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like voip without enumer...
CNAME record of voip.<domain>: looks up the voip host under the domain you give (CNAME via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like voip without enum...
TXT record of voip.<domain>: looks up the voip host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like voip without enumerat...