flybilleder.dk is a .dk domain served by 2 nameservers (holly.ns.cloudflare.com, jack.ns.cloudflare.com). It was registered on 22 January 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.45.91 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by isaac.mx.cloudflare.net, linda.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.45.91 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.212.170 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:d4aa | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:2d5b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.45.91,172.67.212.170 ech=AEX+DQBBZwAgACBMZgMasfFw2MV6CDGu3DxJe2oxq8YeLadUvqMjKzUoRAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:d4aa,2606:4700:3036::6815:2d5b |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (flybilleder.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (_dmarc.flybilleder.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:cloudflare@flybilleder.dk |
| www | 104.21.45.91 172.67.212.170 2606:4700:3034::ac43:d4aa 2606:4700:3036::6815:2d5b (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network flybilleder.dk: 104.21.45.91 172.67.212.170 2606:4700:3034::ac43:d4aa 2606:4700:3036::6815:2d5b (AS13335) www.flybilleder.dk: 104.21.45.91 172.67.212.170 2606:4700:3034::ac43:d4aa 2606:4700:3036::6815:2d5b (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.amir.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.amir.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.amir.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.isaac.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.isaac.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.isaac.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.linda.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.linda.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.linda.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2412278604 |
| Primary NS (MNAME) | holly.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 | 2007-01-22 |
| Expires | 2027-01-31 (104d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 20:40:18 | 1574ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-10-15 18:46:08 | 1179ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-10-14 17:16:13 | 2836ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-29 21:48:28 | 1261ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-25 21:10:51 | 3301ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-11 14:40:40 | 1928ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-25 17:25:49 | 1028ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-25 08:09:05 | 1614ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-20 13:03:34 | 4215ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-16 15:02:24 shown | 7995ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-15 09:07:00 | 25711ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-14 02:45:42 | 9884ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-07-19 21:32:47 | 2542ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-07-08 13:01:53 | 34627ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-29 05:45:21 | 1277ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-23 16:11:11 | 1228ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-23 03:56:50 | 2113ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-20 15:28:14 | 3768ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-17 10:16:08 | 1257ms | 2 NS 2 A 3 MX | 🔒 Secure |