holstebro-vuc.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 21 October 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.254.168.52 is hosted by Aarhus Business College (AS51073) in Denmark. Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.efif.dk | 195.254.168.23 | ns.efif.dk | AS51073 Aarhus Business College |
| ns2.efif.dk | 195.254.168.12 | ns2.efif.dk | AS51073 Aarhus Business College |
| ns3.efif.dk | 20.23.170.35 | — | AS8075 Microsoft Corporation |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.254.168.52 | 300s | cphbusiness.dk ek.dk keanet.dk kompetence.kea.dk redirect.efif.dk |
AS51073 | Aarhus Business College | 195.254.168.0/23 | 🇩🇰 Denmark | Højbjerg |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| 5t8h5vo4lj2m3v795vt1nuf309 |
| 67nlu0r7uvncpe2cu1avd91gt5 |
| 8cgpigskfgoqbriev417l63295 |
| 9hb7ro8ig24l5k4ubaiemqd1r9 |
| gjafkija2vdoi273aak2e73sj4 |
| inst=VUC Holstebro-Lemvig-Struer |
| MS=ms12086482 |
| MS=ms96532096 |
| obp5t5ibrb9t7rre42cr6ce5eo |
| oidljejpeiqsvo62ms1la27vn2 |
| p4vcm8pavuijhs4e8lujlkmb96 |
| uvmid=661248 |
| v=spf1 ip4:83.91.91.2 include:spf.protection.outlook.com include:spf.mcb.dk include:spf.mailanyone.net mx a -all |
| vpe=4332a21b |
| Policy | Record (holstebro-vuc.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:83.91.91.2 include:spf.protection.outlook.com include:spf.mcb.dk include:spf.mailanyone.net mx a -all |
| www CNAME | holstebro-vuc.dk (all on holstebro-vuc.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u898183.wl184.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u898183.wl184.sendgrid.net | 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: 5/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| 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 | 2026180608 |
| Primary NS (MNAME) | ns.efif.dk |
| Responsible (RNAME) | dns-zc@efif.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1996-10-21 |
| Expires | 2026-12-31 (75d) |
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 |
|---|---|---|---|
| 2026-10-01 02:42:48 | 710ms | 3 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-31 16:03:27 | 876ms | 3 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-28 16:00:53 | 9331ms | 3 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-27 12:08:07 | 10825ms | 3 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-01 22:00:11 shown | 673ms | 3 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-25 19:10:22 | 903ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 18:22:15 | 1168ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 13:59:43 | 3677ms | 2 NS 1 A 4 MX | 🔒 Secure |