hjertingskole.dk is a .dk domain served by 2 nameservers (brit.ns.cloudflare.com, mack.ns.cloudflare.com). It was registered on 26 June 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.32.164 is hosted by Cloudflare, Inc. (AS13335). 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 |
|---|---|---|---|---|---|---|---|
| 104.21.32.164 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.152.225 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:98e1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::6815:20a4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.32.164,172.67.152.225 ech=AEX+DQBBawAgACAlqh8w/uLZKf7J65iNHYNnBIRbkc2pDrPvB/j5ugm0RAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:98e1,2606:4700:3033::6815:20a4 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (hjertingskole.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.hjertingskole.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; |
| www | 104.21.32.164 172.67.152.225 2606:4700:3033::6815:20a4 2606:4700:3035::ac43:98e1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network hjertingskole.dk: 104.21.32.164 172.67.152.225 2606:4700:3033::6815:20a4 2606:4700:3035::ac43:98e1 (AS13335) www.hjertingskole.dk: 104.21.32.164 172.67.152.225 2606:4700:3033::6815:20a4 2606:4700:3035::ac43:98e1 (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: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2407092070 |
| Primary NS (MNAME) | brit.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2024-06-26 |
| Expires | 2027-06-25 (241d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 15:00:27 | 866ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-08 07:07:24 | 470ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-29 20:27:33 | 917ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-22 01:22:20 | 1880ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-20 10:21:57 | 1070ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-03 14:32:30 | 2398ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-31 04:44:20 | 505ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-27 21:21:45 | 486ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-03 15:06:57 | 1111ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-14 06:15:15 | 1028ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-03 20:39:47 | 7132ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-25 00:59:56 shown | 2393ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-17 12:49:24 | 2619ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-17 12:30:38 | 245ms | 0 NS 0 A 0 MX | ❓ Unknown |