gstrup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 19 December 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.62.97.138 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by gstrup.dk, mxbackup.gstrup.dk. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 87.62.97.138 | 21600s | 0x573e618a.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.62.0.0/15 | 🇩🇰 Denmark | Fredericia |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 20 | 600s | gstrup.dk | 87.62.97.138 | 0x573e618a.static.cust.fastspeed.dk | AS3292 TDC Holding A/S |
| 50 | 600s | mxbackup.gstrup.dk | 62.66.147.121 | 062066147121.static.telenor.dk | AS9158 Telenor A/S |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com -all |
| Policy | Record (gstrup.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_custspf.one.com -all |
| Policy | Record (_dmarc.gstrup.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=20; rua=mailto:info@gstrup.dk |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · 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 | 2026032401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2010-12-19 |
| Expires | 2026-12-31 (67d) |
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).
| Domain | Registrar |
|---|---|
| fhms.dk | Punktum dk A/S (direct) |
| maskinsmedie.dk | Punktum dk A/S (direct) |
| norcar-danmark.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 02:21:49 | 459ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-20 01:11:56 | 957ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-07 15:15:35 | 465ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-30 11:20:00 | 846ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-23 20:34:32 | 1072ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 23:38:57 | 727ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-28 22:29:58 | 832ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 09:16:46 | 824ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 23:12:45 | 565ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 02:51:49 | 1020ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 18:01:58 shown | 701ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 10:15:19 | 1759ms | 2 NS 1 A 2 MX | 🔒 Secure |