hackaarhus.dk is a .dk domain served by 2 nameservers (joan.ns.cloudflare.com, lloyd.ns.cloudflare.com). It was registered on 20 June 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.4.220 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.4.220 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.132.137 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:4dc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:8489 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.4.220,172.67.132.137 ech=AEX+DQBB6AAgACAOhem5iKdcqaXkmsbEkxOkncxl7aHkhTPrnOfmwr3ccwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:4dc,2606:4700:3035::ac43:8489 |
| www | 104.21.4.220 172.67.132.137 2606:4700:3030::6815:4dc 2606:4700:3035::ac43:8489 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network hackaarhus.dk: 104.21.4.220 172.67.132.137 2606:4700:3030::6815:4dc 2606:4700:3035::ac43:8489 (AS13335) www.hackaarhus.dk: 104.21.4.220 172.67.132.137 2606:4700:3030::6815:4dc 2606:4700:3035::ac43:8489 (AS13335) |
| Wildcard | No |
| 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 | 2408443468 |
| Primary NS (MNAME) | joan.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 | 2018-06-20 |
| Expires | 2027-07-31 (286d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 03:50:06 | 940ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-27 23:13:50 | 688ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-04 15:37:20 | 540ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 15:37:30 | 2454ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-11 15:50:43 | 3980ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-28 01:34:19 shown | 24935ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-03 11:31:27 | 802ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-22 18:30:41 | 1048ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-20 20:40:26 | 1109ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 10:41:55 | 752ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 10:39:47 | 705ms | 2 NS 2 A 0 MX | 🔓 Insecure |