vtk.dk is a .dk domain served by 2 nameservers (blair.ns.cloudflare.com, frank.ns.cloudflare.com). It was registered on 31 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 152.115.36.112 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by vtk-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 152.115.36.112 | 300s | s10.stom.dk | AS31027 | GlobalConnect A/S | 152.115.0.0/16 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 10 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms98849083 |
| v=spf1 a:mail.blite.dk ip4:152.115.36.112 ip4:87.104.221.82 ip4:87.104.221.83 ip4:87.104.221.86 ip4:192.162.219.206 ip4:217.116.213.122 include:spf.stom.dk include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf.consignor.com -all |
| vpe=267cbf77 |
| Policy | Record (vtk.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.blite.dk ip4:152.115.36.112 ip4:87.104.221.82 ip4:87.104.221.83 ip4:87.104.221.86 ip4:192.162.219.206 ip4:217.116.213.122 include:spf.stom.dk include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf.consignor.com -all |
| Policy | Record (_dmarc.vtk.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:re+qouj0kceguu@dmarc.postmarkapp.com; sp=none; aspf=r; |
| www | 152.115.36.112 (AS31027) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u26927624.wl125.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u26927624.wl125.sendgrid.net | RSA · ~2048 bit |
| selector1 | selector1-vtk-dk._domainkey.vtkdk.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-vtk-dk._domainkey.vtkdk.onmicrosoft.com | 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| 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 | 2416606550 |
| Primary NS (MNAME) | blair.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-01-31 |
| Expires | 2027-03-31 (156d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 02:24:00 | 1136ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 12:01:00 | 1497ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-05 06:26:38 shown | 1725ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 03:14:40 | 2527ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-14 19:57:17 | 2038ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-07 17:52:00 | 3755ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-04 11:21:00 | 9926ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 19:18:53 | 2824ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 05:48:03 | 1368ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 19:29:36 | 1818ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-08 03:49:19 | 1855ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-16 10:56:44 | 1254ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 08:51:27 | 1290ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-17 12:54:00 | 3467ms | 2 NS 1 A 1 MX | 🔓 Insecure |