byholiday.dk is a .dk domain served by 2 nameservers (dan.ns.cloudflare.com, nadia.ns.cloudflare.com). It was registered on 8 April 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.85.182 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.bom.dk. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.85.182 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.208.226 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 13 | 300s | mx1.bom.dk | 144.76.9.152 | mx1.bom.dk | AS24940 Hetzner Online GmbH |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3037::6815:55b6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:d0e2 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.85.182,172.67.208.226 ech=AEX+DQBBGQAgACAUnzhBq/JMa/JXXXguFdhzDMxKzBBfEpfVXlwZSziwZQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:55b6,2606:4700:3037::ac43:d0e2 |
| www | 104.21.85.182 172.67.208.226 2606:4700:3037::6815:55b6 2606:4700:3037::ac43:d0e2 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network byholiday.dk: 104.21.85.182 172.67.208.226 2606:4700:3037::6815:55b6 2606:4700:3037::ac43:d0e2 (AS13335) www.byholiday.dk: 104.21.85.182 172.67.208.226 2606:4700:3037::6815:55b6 2606:4700:3037::ac43:d0e2 (AS13335) |
| 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 | 2415977938 |
| Primary NS (MNAME) | dan.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 | 2022-04-08 |
| Expires | 2027-04-07 (161d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-26 19:35:35 shown | 620ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 17:06:23 | 1171ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 11:27:54 | 770ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-25 11:14:55 | 740ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 11:10:37 | 1431ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-13 07:04:19 | 691ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-31 20:42:52 | 968ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-26 22:21:51 | 8921ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-02 00:28:29 | 833ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 18:27:33 | 437ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 18:20:01 | 626ms | 2 NS 2 A 1 MX | 🔓 Insecure |