DNS Lookup
Look up A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV and PTR records for any domain or IP address.
Check what the world sees for a domain: A and AAAA (web servers), MX (where mail goes), TXT (SPF, DMARC, verification records), NS, CNAME, SOA, CAA and SRV records – or enter an IP address for its reverse (PTR) name. Results come straight from public DNS and include the TTL, so you know how long a change can take to show up everywhere.
Typical checks
- After moving a website: do the A/AAAA records point to the new server?
- After switching mail provider: are the MX records updated and the old ones gone?
- Before issuing a certificate: does a CAA record allow your certificate authority?
- Mail server setup: does the server’s IP have a PTR record matching its hostname?
常见问题
Why does my change not show yet?
Resolvers cache answers for the record’s TTL. After a change, old answers can persist until that time runs out.
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