houlbergwittrup.dk is a .dk domain served by 6 nameservers (ns10.dnsadmin.dk, ns11.dns-admin.dk, ns12.dnsadmin.dk and 3 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.221.253.98 is hosted by Unit IT Services ApS (AS42876) in Denmark. Mail is handled by domainname-tld.mx1-dk.mailanyone.net, domainname-tld.mx2-dk.mailanyone.net and 1 more. The zone is not DNSSEC-signed, has no 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 77.221.253.98 | 3600s | — | AS42876 | Unit IT Services ApS | 77.221.224.0/19 | 🇩🇰 Denmark | Taastrup |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | owa.autohus.dk.houlbergwittrup.dk |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 0 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com ip4:194.182.254.0/24 ip4:54.72.65.107 -all |
| vpe=2be330d2 |
| Policy | Record (houlbergwittrup.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com ip4:194.182.254.0/24 ip4:54.72.65.107 -all |
| www CNAME | houlbergwittrup.dk.houlbergwittrup.dk (all on houlbergwittrup.dk) ⚠ Dangling: the CNAME target does not exist. If that name can be claimed (an unregistered domain, or a free name on a hosting platform), whoever claims it controls www.houlbergwittrup.dk |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · policy: -all
No problems found| 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 | 2009010115 |
| Primary NS (MNAME) | ns20.digicertdns.com |
| Responsible (RNAME) | dns@digicertdns.com |
| Refresh | 43200s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 180s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 18:27:40 shown | 1248ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-29 15:43:19 | 2295ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-25 11:17:40 | 974ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-28 10:33:16 | 1570ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-27 01:55:49 | 5379ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-26 10:08:50 | 3203ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-20 04:35:34 | 714ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-18 13:31:25 | 1845ms | 6 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-17 15:10:48 | 287ms | 0 NS 0 A 0 MX | ❓ Unknown |