klausthorup.dk is a .dk domain served by 5 nameservers (ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk and 2 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 152.89.79.37 is hosted by Krystal Hosting Ltd (AS12488) in United States. Mail is handled by mx1.gigahost.dk, mx2.gigahost.dk and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 152.89.79.37 | 3600s | marco-nyc.krystalhosting.com | AS12488 | Krystal Hosting Ltd | 152.89.76.0/22 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.gigahost.dk | 46.183.139.11 | mx1.gigahost.dk | AS47292 Sentia Denmark A/S |
| 10 | 3600s | mx2.gigahost.dk | 46.183.139.12 | mx2.gigahost.dk | AS47292 Sentia Denmark A/S |
| 10 | 3600s | mx3.gigahost.dk | 46.183.139.13 | mx3.gigahost.dk | AS47292 Sentia Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | klausthorup.dk → 152.89.79.37 |
| 🔶 Autoconfig | klausthorup.dk → 152.89.79.37 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | autodiscover.gigahost.dk |
| TXT Record |
|---|
| krystal-domain-verification |
| spf2.0/pra |
| v=spf1 mx include:spf.gigahost.dk -all |
| Policy | Record (klausthorup.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:spf.gigahost.dk -all |
| Policy | Record (_dmarc.klausthorup.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| www | 104.21.94.51 172.67.219.209 2606:4700:3031::ac43:dbd1 2606:4700:3034::6815:5e33 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network klausthorup.dk: 104.21.94.51 172.67.219.209 2606:4700:3031::ac43:dbd1 2606:4700:3034::6815:5e33 (AS13335) www.klausthorup.dk: 104.21.94.51 172.67.219.209 2606:4700:3031::ac43:dbd1 2606:4700:3034::6815:5e33 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 2/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.klausthorup.dk | klausthorup.dk |
| 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 | 2026082001 |
| Primary NS (MNAME) | ns1.gigahost.dk |
| Responsible (RNAME) | hostmaster@klausthorup.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 22:27:47 | 1092ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-28 05:50:45 | 1071ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-11 22:04:42 | 2248ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-27 22:09:46 | 621ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-26 21:12:35 | 896ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-26 12:44:46 | 2462ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-25 04:25:39 | 1040ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-20 23:55:32 shown | 5641ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-14 12:18:36 | 1352ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-07 08:48:16 | 1687ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-04 20:21:15 | 2265ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-24 14:03:07 | 8848ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-23 10:21:47 | 9992ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-17 02:01:15 | 1971ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-11 06:03:13 | 10132ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-03 14:54:06 | 3210ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-26 23:37:12 | 1952ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-24 01:28:16 | 2240ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-23 01:47:31 | 936ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 09:00:53 | 2358ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 06:04:09 | 1167ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 08:47:46 | 3737ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-17 19:44:23 | 1208ms | 5 NS 1 A 3 MX | 🔓 Insecure |