retstjek.dk is a .dk domain served by 2 nameservers (aron.ns.cloudflare.com, yadiel.ns.cloudflare.com). It was registered on 10 June 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.2.133 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 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 |
|---|---|---|---|---|---|---|---|
| 104.21.2.133 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.129.63 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 188.114.96.1 |
| 🔶 Autoconfig | 188.114.96.1 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:285 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:813f | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBBgQAgACDvbAQlPcWAH3N/TV/+gU+E/PFOVJ3QD7Jxe7EewQGgDgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1 |
| www | 104.21.2.133 172.67.129.63 2606:4700:3031::6815:285 2606:4700:3037::ac43:813f (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network retstjek.dk: 104.21.2.133 172.67.129.63 2606:4700:3031::6815:285 2606:4700:3037::ac43:813f (AS13335) www.retstjek.dk: 104.21.2.133 172.67.129.63 2606:4700:3031::6815:285 2606:4700:3037::ac43:813f (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.retstjek.dk | oTJlI2LUfijIH25mHFBEwiTSwBHsxUglwhnHn-lokYU |
| TXT | _acme-challenge.retstjek.dk | s9D83WrhauxJDiIx0WiKNhVVPgpb1NyOTHLaJQJgdn8 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2418177300 |
| Primary NS (MNAME) | aron.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2026-06-10 |
| Expires | 2027-06-09 (228d) |
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).
| Domain | Registrar |
|---|---|
| baconpartiet.dk | DANDOMAIN A/S |
| boosteren.dk | DANDOMAIN A/S |
| kzn.dk | DANDOMAIN A/S |
| raket42.dk | DANDOMAIN A/S |
| web42.dk | DANDOMAIN A/S |
| wuf-tastisk.dk | DANDOMAIN A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 03:19:00 shown | 476ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-28 20:57:52 | 633ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-11 00:40:52 | 1558ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-25 09:43:02 | 2762ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-25 01:53:02 | 709ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-24 01:41:29 | 1025ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-12 06:38:03 | 3382ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-19 07:22:05 | 17531ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-30 11:08:33 | 1587ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-19 13:31:43 | 568ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 14:01:13 | 1581ms | 2 NS 1 A 0 MX | 🔒 Secure |