klasseværelset.dk is a .dk domain served by 2 nameservers (ns3.nordicway.dk, ns4.nordicway.dk). It was registered on 22 March 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.71.4.69 is hosted by Bolignet A/s (AS44134) in Denmark. Mail is handled by xn--klassevrelset-9fb.dk. The zone is of unknown DNSSEC status, has no DMARC policy and has no IPv6 address. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 217.71.4.69 | 3600s | 217.71.4.69.static.router4.bolignet.dk | AS44134 | Bolignet A/s | 217.71.0.0/20 | 🇩🇰 Denmark | Valby |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | xn--klassevrelset-9fb.dk | 217.71.4.69 | 217.71.4.69.static.router4.bolignet.dk | AS44134 Bolignet A/s |
| TXT Record |
|---|
| v=spf1 ip4:148.251.244.167 +a +mx +ip4:157.90.179.89 -all |
| Policy | Record (klasseværelset.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:148.251.244.167 +a +mx +ip4:157.90.179.89 -all |
| www CNAME | xn--klassevrelset-9fb.dk (all on xn--klassevrelset-9fb.dk) → 217.71.4.69 (AS44134) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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.
DNS lookups: 2/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.klasseværelset.dk | hPPrbHRwZICW8ux1JjkdE9stOuwDpektN5PfRc2vn_c |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxdomain |
| Field | Value |
|---|---|
| Serial | 2026061103 |
| Primary NS (MNAME) | ns3.nordicway.dk |
| Responsible (RNAME) | server@nordicway.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2012-03-22 |
| Expires | 2028-03-31 (523d) |
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 |
|---|---|---|---|
| 2026-10-12 13:35:39 | 559ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 21:53:13 | 9557ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 04:07:30 | 9530ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-11 22:56:27 | 1117ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-29 23:43:56 | 719ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 00:11:21 shown | 1315ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-23 11:38:15 | 1101ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 06:01:18 | 775ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-23 03:25:06 | 499ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 22:05:41 | 1156ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 20:41:47 | 723ms | 2 NS 1 A 1 MX | 🔒 Secure |