lean-learning.dk is a .dk domain served by 2 nameservers (lucy.ns.cloudflare.com, micah.ns.cloudflare.com). It was registered on 28 November 2014 (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.
| www | Exists, no address |
| www vs bare domain | Neither resolves lean-learning.dk: no address www.lean-learning.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 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 | 2417759808 |
| Primary NS (MNAME) | lucy.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-11-28 |
| Expires | 2026-11-30 (41d) |
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 |
|---|---|---|---|
| 2026-10-18 13:38:16 shown | 390ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-14 10:42:15 | 1032ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-30 11:01:09 | 528ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-27 15:57:34 | 526ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-24 03:37:33 | 511ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-05 22:53:16 | 2823ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-04 10:30:48 | 382ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-31 04:17:46 | 406ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-16 00:25:23 | 713ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-08 00:32:15 | 793ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-17 09:29:18 | 808ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-28 11:40:49 | 867ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-27 09:43:25 | 1492ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-25 13:20:05 | 645ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-17 14:26:15 | 1652ms | 2 NS 0 A 0 MX | 🔒 Secure |