thereef.dk is a .dk domain served by 2 nameservers (vick.ns.cloudflare.com, ximena.ns.cloudflare.com). It was registered on 4 November 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.17.203 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by custmx.cscdns.net. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.17.203 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.178.73 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | custmx.cscdns.net | 198.58.121.58 | 198-58-121-58.ip.linodeusercontent.com | AS63949 Akamai Connected Cloud |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:b249 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:11cb | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.17.203,172.67.178.73 ech=AEX+DQBBEAAgACBc5rhJUgx/SRHXHvOTrZR4uvMPv7NjmPHjCzUE36/qDAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:b249,2606:4700:3037::6815:11cb |
| www | 188.114.96.1 188.114.97.1 2606:4700:3032::ac43:b249 2606:4700:3037::6815:11cb (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 | 2411742138 |
| Primary NS (MNAME) | vick.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 2009-11-04 |
| Expires | 2026-11-30 (43d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 14:18:48 | 603ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 07:04:20 | 558ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 15:55:21 | 802ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 15:15:58 | 655ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 03:54:17 | 1466ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-10 06:19:40 shown | 3026ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-25 01:47:38 | 9509ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 19:01:24 | 880ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 17:54:17 | 1456ms | 2 NS 2 A 1 MX | 🔓 Insecure |