djurslandsgymnasium.dk is a .dk domain served by 2 nameservers (ns3.supportcenter.dk, ns4.supportcenter.dk). It was registered on 3 November 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.54.32.75 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns3.supportcenter.dk | 87.54.32.150 | — | AS3292 TDC Holding A/S |
| ns4.supportcenter.dk | 2.106.7.200 | ns4.supportcenter.dk | AS3292 TDC Holding A/S |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (djurslandsgymnasium.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.djurslandsgymnasium.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject;rua=mailto:dmarc@via.dk; ruf=mailto:dmarc@via.dk |
| www CNAME | www.grenaa-gym.dk (all on grenaa-gym.dk) → 94.231.106.68 (AS48854) |
| www vs bare domain | Different networks (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 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 | 846 |
| Primary NS (MNAME) | ns3.supportcenter.dk |
| Responsible (RNAME) | hostmaster@supportcenter.dk |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2006-11-03 |
| Expires | 2026-11-30 (40d) |
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 |
|---|---|---|---|
| 2026-10-18 19:48:41 shown | 492ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 18:46:32 | 3992ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 13:27:50 | 335ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 08:28:13 | 309ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 14:44:29 | 560ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 14:18:14 | 1572ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 11:34:37 | 304ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 11:31:06 | 335ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 15:45:47 | 596ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 15:37:30 | 914ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 02:27:54 | 527ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 02:00:01 | 500ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 01:51:51 | 460ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 23:41:47 | 3816ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-07 20:57:58 | 3333ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-31 12:44:21 | 416ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 19:48:50 | 371ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 18:57:49 | 448ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 11:01:08 | 1370ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-22 09:53:20 | 18933ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 04:12:36 | 483ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-16 09:43:10 | 1763ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-14 16:19:55 | 535ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-11 04:19:09 | 4725ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-09 23:13:41 | 1437ms | 2 NS 1 A 1 MX | 🔒 Secure |