30 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.
IPv6 readiness check for a domain: AAAA records for the site, IPv6 on its mail exchangers and on its nameservers, and whether it is dual-stack. Compliance and modernization audits. $0.01 per domain.
IP address validator: tells you whether a string is a valid IPv4 or IPv6 address, which version, the normalized form and its classification (public, private, loopback, link-local, multicast...). Input validation for form...
Validate a ipv6: tests the value against a well-known ipv6 pattern and returns valid true/false, the pattern used (so you can reuse it), and, when it fails, the first character position that breaks the rule. Format valid...
IPv4 and IPv6 address inspector: one GET takes one address and returns its canonical and fully expanded form, its decimal integer and hex value, its reverse-DNS name (in-addr.arpa or ip6.arpa), and the special-purpose ra...
DNS AAAA record lookup: resolve a domain name to its IPv6 addresses with TTL and DNSSEC validation flag. Tells you whether a site is reachable over IPv6. $0.01 per lookup.
IPv6 prefix 64: pure calculation on the address, no network call. The /64 network. $0.01 per call.