gartner-nielsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 December 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.61.221.145 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by gartner-nielsen.dk. The zone is DNSSEC-signed but currently fails validation, has no 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 |
|---|---|---|---|---|---|---|---|
| 217.61.221.145 | 43200s | xd93ddd91.customers.hiper-net.dk | AS203953 | Hiper A/S | 217.61.216.0/21 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | gartner-nielsen.dk | 217.61.221.145 | xd93ddd91.customers.hiper-net.dk | AS203953 Hiper A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | gartner-nielsen.dk → 217.61.221.145 |
| 🔶 Autoconfig | gartner-nielsen.dk → 217.61.221.145 |
| www CNAME | gartner-nielsen.dk (all on gartner-nielsen.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.gartner-nielsen.dk | gartner-nielsen.dk |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'gartner-nielsen.dk/DS/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2026061501 |
| 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 | 2000-12-22 |
| Expires | 2026-12-31 (68d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 18:56:31 | 1117ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 12:17:11 | 1576ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 20:22:58 | 1057ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 13:29:12 | 5248ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-16 16:48:35 | 914ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-16 14:25:48 | 705ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-04 12:56:06 | 1133ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 06:27:43 shown | 2853ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-23 07:21:42 | 1155ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 09:50:12 | 803ms | 2 NS 1 A 1 MX | 🔒 Secure |