certification.dk is a .dk domain served by 2 nameservers (inet.dti.dk, inet2.dti.dk). It was registered on 20 March 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by smtprelay1.dti.dk, smtprelay17.dti.dk. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| inet.dti.dk | 87.54.37.66 | 66.0-127.37.54.87.in-addr.arpa | AS3292 TDC Holding A/S |
| inet2.dti.dk | 62.243.15.66 | 66.0-127.15.243.62.in-addr.arpa | AS3292 TDC Holding A/S |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 7200s | smtprelay1.dti.dk | 87.54.37.25 87.54.37.25 |
25.0-127.37.54.87.in-addr.arpa smtprelay1.dti.dk |
AS3292 TDC Holding A/S AS3292 TDC Holding A/S |
| 15 | 7200s | smtprelay17.dti.dk | 62.243.15.25 62.243.15.25 |
25.0-127.15.243.62.in-addr.arpa smtprelay17.dti.dk |
AS3292 TDC Holding A/S AS3292 TDC Holding A/S |
| www CNAME | certification.teknologisk.dk (all on teknologisk.dk) → 87.54.37.110 (AS3292) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2007042901 |
| Primary NS (MNAME) | inet.dti.dk |
| Responsible (RNAME) | postmaster@dti.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | WEB SOLUTIONS A/S |
| Registered | 2003-03-20 |
| Expires | 2027-03-31 (163d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
Showing 100 of 411.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 19:21:27 | 433ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-10-04 00:22:55 | 384ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-09-29 19:00:16 | 578ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-09-18 01:08:08 | 464ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-07-02 15:31:13 shown | 527ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-23 18:28:10 | 3808ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-23 14:11:08 | 1168ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 20:11:04 | 590ms | 2 NS 0 A 2 MX | 🔓 Insecure |