boligbyggeren.dk is a .dk domain served by 2 nameservers (kip.ns.cloudflare.com, sharon.ns.cloudflare.com). It was registered on 27 November 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.56.81 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.56.81 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.181.110 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:3851 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:b56e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.56.81,172.67.181.110 ech=AEX+DQBBiAAgACDiCwefp2qlCZI1528quffFxIGgo3TJG1z79gXnmyfYGAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3851,2606:4700:3037::ac43:b56e |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (boligbyggeren.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.boligbyggeren.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:a24d8f8d72f040ed954c72b59f56250a@dmarc-reports.cloudflare.net; adkim=s; aspf=s |
| www | 104.21.56.81 172.67.181.110 2606:4700:3031::6815:3851 2606:4700:3037::ac43:b56e (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network boligbyggeren.dk: 104.21.56.81 172.67.181.110 2606:4700:3031::6815:3851 2606:4700:3037::ac43:b56e (AS13335) www.boligbyggeren.dk: 104.21.56.81 172.67.181.110 2606:4700:3031::6815:3851 2606:4700:3037::ac43:b56e (AS13335) |
| Wildcard | No |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416436198 |
| Primary NS (MNAME) | kip.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2025-11-27 |
| Expires | 2026-11-26 (36d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 13:20:33 shown | 429ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-08 05:26:03 | 484ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-03 15:52:11 | 496ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-02 15:51:54 | 1300ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-29 14:43:50 | 1514ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-23 16:55:20 | 530ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-19 06:02:37 | 1180ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-14 08:18:31 | 514ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-31 16:22:58 | 571ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-08 05:16:13 | 903ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-22 15:45:20 | 8770ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-03 00:24:38 | 1610ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-24 23:41:27 | 4989ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-24 09:35:06 | 924ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 17:31:12 | 1008ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 15:42:04 | 345ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 15:40:49 | 443ms | 2 NS 2 A 0 MX | 🔓 Insecure |