r4s.dk is a .dk domain served by 2 nameservers (amber.ns.cloudflare.com, cleo.ns.cloudflare.com). It was registered on 18 January 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.20.222 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 |
|---|---|---|---|---|---|---|---|
| 104.21.20.222 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.194.180 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:14de | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:c2b4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.20.222,172.67.194.180 ech=AEX+DQBB4AAgACCf/W/7i09d9PMp/1HYcYXrs/du12x85qGnE1gH5hmSMwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:14de,2606:4700:3037::ac43:c2b4 |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve r4s.dk: 104.21.20.222 172.67.194.180 2606:4700:3031::6815:14de 2606:4700:3037::ac43:c2b4 (AS13335) (all like this)www.r4s.dk: no address |
| Wildcard | No |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.r4s.dk | Ye0lXr5KKp2AoWwvdYC_KjmoGxiPPUVb2Cam7yWCAnE |
| TXT | _acme-challenge.r4s.dk | be0n1vzpXX3z2xSzgoGXX2moaDxm4ktMkWubB4RMBVE |
| 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 | 2416092635 |
| Primary NS (MNAME) | amber.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Domeneshop AS |
| Registered | 2019-01-18 |
| Expires | 2027-01-31 (100d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 01:28:38 | 380ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 00:59:39 | 831ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-29 00:47:54 shown | 576ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-07 12:44:39 | 1209ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-06 15:55:25 | 538ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-02 01:15:30 | 715ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-04 23:29:54 | 1464ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-28 14:54:30 | 1572ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-18 08:24:29 | 16478ms | 2 NS 2 A 0 MX | 🔓 Insecure |