howtostudy.dk is a .dk domain with no delegation in this scan. It was registered on 3 June 2021 (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 | 93.191.158.41 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| 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 | DANDOMAIN A/S |
| Registered | 2021-06-03 |
| Expires | 2030-06-30 (1352d) |
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 |
|---|---|---|---|
| 2026-09-25 14:15:48 | 447ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 15:01:09 | 718ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 00:28:49 | 2655ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 22:35:18 | 1177ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 14:57:29 | 416ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-18 15:59:27 | 810ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 13:53:20 shown | 278ms | 0 NS 0 A 0 MX | ❓ Unknown |