geogebrakursus.dk is a .dk domain with no delegation in this scan. It was registered on 29 July 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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.
| www CNAME | geogebrakursus.dk (all on geogebrakursus.dk) → 167.235.1.82 (AS24940) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
| Check | Result |
|---|---|
| Validation Status | Not applicable: the domain has no delegation, so there is no zone to validate (stored verdict: ❓ Unknown). |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: failure |
| Field | Value |
|---|---|
| Registrar | nordicway ApS |
| Registered | 2013-07-29 |
| Expires | 2027-07-31 (282d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 21:46:09 | 745ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-14 15:05:00 | 2835ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 21:56:35 | 1456ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 02:11:32 shown | 1114ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 11:47:26 | 964ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 10:04:49 | 1158ms | 2 NS 1 A 1 MX | 🔒 Secure |