kursus-i-ct.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 5 August 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.efif.dk | 195.254.168.23 | ns.efif.dk | AS51073 Aarhus Business College |
| ns2.efif.dk | 195.254.168.12 | ns2.efif.dk | AS51073 Aarhus Business College |
| ns3.efif.dk | 20.23.170.35 | — | AS8075 Microsoft Corporation |
| TXT Record |
|---|
| google-site-verification=N5gAPTyvo-zd9-EBa3kxI6mom4VycRZzRYCFMZnTHHA |
| www CNAME | ghs.googlehosted.com (all on googlehosted.com) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2019012526 |
| Primary NS (MNAME) | ns.efif.dk |
| Responsible (RNAME) | dns-zc@efif.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2020-08-05 |
| Expires | 2027-08-31 (309d) |
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 146.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 05:27:40 shown | 309ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-20 00:47:18 | 1631ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-16 21:32:53 | 849ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-14 15:50:58 | 969ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-08 22:59:19 | 2763ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-07 22:53:49 | 1565ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-02 22:32:17 | 475ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-29 22:16:26 | 477ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-27 21:36:40 | 1581ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-21 16:47:17 | 1534ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-15 16:56:09 | 1079ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-08 15:35:39 | 4711ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-06 20:57:47 | 413ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-30 02:16:47 | 342ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-27 20:05:30 | 458ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-27 06:27:27 | 349ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-26 06:23:11 | 492ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-25 06:34:46 | 8426ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-20 01:26:21 | 8630ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-19 00:38:19 | 12491ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-12 16:34:17 | 4400ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-10 01:48:59 | 9177ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-07 01:51:31 | 6480ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-01 18:41:46 | 2031ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-27 11:49:03 | 3272ms | 3 NS 0 A 0 MX | 🔒 Secure |