mtbkurser.dk is a .dk domain served by 3 nameservers (ns1.pil.dk, ns2.pil.dk, ns3.pil.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.223.235.43 is hosted by DLX A/S (AS47527) in Denmark. Mail is handled by mx02.pil.dk, mx03.pil.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.223.235.43 | 3600s | nextstep.pil.dk | AS47527 | DLX A/S | 91.223.235.0/24 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx02.pil.dk | 185.126.153.25 | radar.pil.dk | AS47527 DLX A/S |
| 10 | 3600s | mx03.pil.dk | 178.63.167.139 | lidar.pil.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 include:mail.pil.dk include:_spf.google.com -all |
| Policy | Record (mtbkurser.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:mail.pil.dk include:_spf.google.com -all |
| www CNAME | mtbkurser.dk (all on mtbkurser.dk) → 91.223.235.43 (AS47527) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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 | 2023041103 |
| Primary NS (MNAME) | ns1.pil.dk |
| Responsible (RNAME) | hostmaster@pil.dk |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 2415600s |
| Minimum (neg-cache TTL) | 900s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-21 09:00:23 | 468ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-25 08:19:36 shown | 2568ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-25 07:31:16 | 656ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-23 11:02:42 | 940ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 04:47:46 | 1077ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-18 05:57:44 | 550ms | 3 NS 1 A 2 MX | 🔓 Insecure |