rbyou.dk is a .dk domain served by 2 nameservers (hasslo.ns.cloudflare.com, may.ns.cloudflare.com). It was registered on 20 April 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.0.239 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed but currently fails validation, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.0.239 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.128.120 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:8078 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::6815:ef | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.0.239,172.67.128.120 ech=AEX+DQBBbAAgACAxx2XvV4JFUCVdgEmdGoqDip2taUNXK2q8lgpoC9YLSQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:8078,2606:4700:3032::6815:ef |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve rbyou.dk: 104.21.0.239 172.67.128.120 2606:4700:3031::6815:ef 2606:4700:3033::ac43:8078 (AS13335) (all like this)www.rbyou.dk: no address |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'rbyou.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2404879053 |
| Primary NS (MNAME) | hasslo.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 | 2016-04-20 |
| Expires | 2027-04-30 (192d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-21 16:50:59 | 2229ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-18 04:12:22 | 3260ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 23:44:20 | 629ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 21:28:08 | 942ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 18:57:19 | 977ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-21 14:48:08 | 1939ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-20 08:22:23 | 967ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-28 06:39:46 | 833ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-27 01:41:35 | 1681ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-24 06:01:31 | 839ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-22 13:55:35 | 924ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 01:26:13 | 473ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 11:59:32 shown | 3659ms | 2 NS 2 A 0 MX | ⚠️ Bogus |