klasse.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 3 May 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 94.231.103.100 | 600s | dnsforward.simply.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 93.191.156.179 |
| 🔶 Autoconfig | 93.191.156.179 |
| www | 94.231.103.100 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| 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 | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100100 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2002-05-03 |
| Expires | 2027-06-30 (255d) |
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 |
|---|---|---|---|
| 2026-10-09 13:40:05 shown | 1103ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-01 21:35:49 | 310ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-30 21:22:59 | 610ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-30 08:29:13 | 366ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 16:32:17 | 423ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-15 17:45:59 | 436ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-25 01:23:38 | 1072ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-24 07:23:45 | 681ms | 4 NS 1 A 0 MX | ⚠️ Bogus |
| 2026-06-19 21:19:28 | 512ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 12:20:47 | 930ms | 4 NS 1 A 0 MX | 🔒 Secure |