horbyefterskole.dk is a .dk domain served by 2 nameservers (bella.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 29 February 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.87.171 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 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 |
|---|---|---|---|---|---|---|---|
| 104.21.87.171 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.144.198 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 300s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 300s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 300s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:90c6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::6815:57ab | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.87.171,172.67.144.198 ech=AEX+DQBBqgAgACDfx5VwFd+eO/9jCeYdVcqR8XkMEFjr9a71cdrwZAeVVgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:90c6,2606:4700:3033::6815:57ab |
| www | 104.21.87.171 172.67.144.198 2606:4700:3032::ac43:90c6 2606:4700:3033::6815:57ab (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network horbyefterskole.dk: 104.21.87.171 172.67.144.198 2606:4700:3032::ac43:90c6 2606:4700:3033::6815:57ab (AS13335) www.horbyefterskole.dk: 104.21.87.171 172.67.144.198 2606:4700:3032::ac43:90c6 2606:4700:3033::6815:57ab (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 |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417033479 |
| Primary NS (MNAME) | bella.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 | 2012-02-29 |
| Expires | 2027-02-28 (127d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 08:31:13 | 640ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-10-09 23:23:47 shown | 1524ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-30 19:24:54 | 678ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-26 18:52:12 | 827ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-25 18:39:26 | 901ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-18 07:01:12 | 1730ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-03 04:54:49 | 1428ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-08-23 15:09:40 | 3955ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-08-09 16:39:50 | 1354ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-07-27 22:46:17 | 1356ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-07-05 20:42:27 | 6054ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-06-20 06:13:29 | 1127ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-06-17 12:05:55 | 1099ms | 2 NS 2 A 4 MX | 🔒 Secure |