certum.pl
The domain certum.pl answers at IP address 213.222.201.184. The domain DNS is managed by Akamai, which decides where each subdomain points. Mail for certum.pl goes through 3 servers; the highest priority one is certum-pl.mail.protection.outlook.com. It also publishes 4 TXT records, used to verify domain ownership with external services and to configure mail security through SPF, DKIM and DMARC.
A A records
MX MX records
- 0 certum-pl.mail.protection.outlook.com 60s
- 10 pri.mx.certum.pl 60s
- 20 sec.mx.certum.pl 60s
NS NS records
- a11-66.akam.net 60s
- a1-222.akam.net 60s
- a22-67.akam.net 60s
- a16-64.akam.net 60s
TXT TXT records
- MS=ms38611329 60s
- v=spf1 ip4:213.222.201.98 ip4:213.222.198.98 -all 60s
- mojecertpl-site-verification-1XyyfB1gkJGwpo1px2rj76P2otrIOr4q 60s
- e73733cb8e798813ae0da06b9708d3b524952464e3c2c8a1e6eff96bb130751 60s
SOA SOA records
- a1-222.akam.net 60s
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 3 hours ago.