>• ipconfig.is

DNS lookup

Look up any DNS record type through validating resolvers: A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, PTR, SRV, HTTPS, DS, DNSKEY, TLSA and more, with the DNSSEC status, the CNAME chain and TTLs.

What it checks

• 20 record types, A to DNAME
• DNSSEC: secure, insecure or bogus
• CNAME chains and TTLs
• PTR records for IP addresses

The same check from the command line

curl "ipconfig.is/dns?name=github.com&type=MX"

All tools

• Domain security audit: TLS certificate, chain and versions
• DNS lookup: 20 record types, A to DNAME
• DNS propagation checker: 12 public resolvers worldwide
• TLS certificate checker: Validity and days remaining
• SPF, DKIM and DMARC checker: SPF with the 10-lookup limit
• HTTP redirect checker: Every redirect hop
• Domain WHOIS lookup: Registrar and registration date
• Subnet calculator: Network, broadcast and usable range

Every tool is also a key-free API call: see the API reference.