billigebøger.dk is a .dk domain served by 2 nameservers (beth.ns.cloudflare.com, jim.ns.cloudflare.com). It was registered on 17 June 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.57.150 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route3.mx.cloudflare.net, route1.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.57.150 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.146.167 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:3996 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:92a7 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.57.150,172.67.146.167 ech=AEX+DQBB3gAgACC/JW52rX0qZ7HM8F0xex53xT7D0p0titeGMvPLGtLuLAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:3996,2606:4700:3037::ac43:92a7 |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (billigebøger.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | 104.21.57.150 172.67.146.167 2606:4700:3030::6815:3996 2606:4700:3037::ac43:92a7 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network billigebøger.dk: 104.21.57.150 172.67.146.167 2606:4700:3030::6815:3996 2606:4700:3037::ac43:92a7 (AS13335) www.billigebøger.dk: 104.21.57.150 172.67.146.167 2606:4700:3030::6815:3996 2606:4700:3037::ac43:92a7 (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxdomain |
| Field | Value |
|---|---|
| Serial | 2406656504 |
| Primary NS (MNAME) | beth.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 | 2016-06-17 |
| Expires | 2027-06-30 (246d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 13:00:43 | 806ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-30 16:40:53 | 1133ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-29 16:25:52 | 1226ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-25 15:42:57 | 929ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-15 01:09:35 | 1897ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-01 07:49:45 | 2656ms | 2 NS 2 A 3 MX | ❓ Unknown |
| 2026-07-17 09:21:17 | 1407ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-03 07:20:59 | 2775ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-26 08:21:57 | 1240ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-25 00:05:29 | 334ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-24 01:43:16 | 1084ms | 2 NS 2 A 3 MX | ❓ Unknown |
| 2026-06-20 14:15:26 shown | 833ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-16 14:33:32 | 807ms | 2 NS 2 A 3 MX | 🔒 Secure |