DNS lookup

Type a domain to see its DNS records: which IP it points to, which mail servers it uses, its TXT records (SPF, DKIM, verifications…) and its name servers. If you type an IP, you will get its reverse DNS.

Look up DNS records

For example: vermiip.es, www.google.com or 8.8.8.8

What is DNS?

DNS (Domain Name System) is the system that translates easy-to-remember domain names into the IP addresses computers use to communicate. It works like an address book distributed across the whole Internet.

DNS record types

A: IPv4 address of the domain. AAAA: IPv6 address. CNAME: alias pointing to another name. MX: mail servers, with their priority (lower number = higher priority). NS: authoritative name servers. TXT: free text, used for SPF, DKIM, DMARC and ownership verifications. SOA: zone data (primary server, administrator email, serial number and timers). CAA: certificate authorities allowed to issue SSL certificates.

What is TTL?

TTL (Time To Live) states, in seconds, how long DNS servers may cache a record. If you have just changed a record and still see the old value, you will have to wait for it to expire: this is known as DNS propagation.