nic.cz
The domain nic.cz answers at IP address 217.31.205.50. Mail for nic.cz goes through 2 servers; the highest priority one is mail.nic.cz. It also publishes 2 TXT records, used to verify domain ownership with external services and to configure mail security through SPF, DKIM and DMARC.
A A records
- 217.31.205.50 293s
AAAA AAAA records
- 2001:1488::3:0:0:0:2 1718s
MX MX records
- 10 mail.nic.cz 217s
- 20 mx.nic.cz 217s
NS NS records
- a.ns.nic.cz 157s
- b.ns.nic.cz 157s
- d.ns.nic.cz 157s
TXT TXT records
- v=spf1 include:_v4nets.nic.cz include:_v6nets.nic.cz include:_spf.network.cz ~all 1237s
- MS=92011E91562E6FD18FF9C5FA1F053F90DD5B1892 1237s
SOA SOA records
- a.ns.nic.cz 1800s
What each record means
- A and AAAA: the server IP address, in IPv4 and IPv6.
- MX: the servers that receive the domain mail. The number is the priority; the lowest is tried first.
- NS: the name servers, which have the final say over the domain DNS.
- TXT: free text. Mostly used for SPF, DKIM and DMARC, and to verify ownership with third parties.
- TTL: how many seconds the record may be cached before asking again.
Checked 8 hours ago.