karlstrup.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 8 February 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.154.243.150 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 185.154.243.150 | 3600s | vdom161.net.dk1.zitcom.dk | AS48854 | team.blue Denmark A/S | 185.154.240.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | autodiscover.outlook.com |
| TXT Record |
|---|
| MS=ms52618394 |
| v=spf1 include:_spf.centerasecurity.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com -all |
| Policy | Record (karlstrup.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.centerasecurity.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com -all |
| Policy | Record (_dmarc.karlstrup.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:639c57a44f3a2@dmarc.centerasecurity.com; fo=1 |
| www | 185.154.243.150 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025020401 |
| Primary NS (MNAME) | ns.scannet2.dk |
| Responsible (RNAME) | hostmaster@scannet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2006-02-08 |
| Expires | 2027-02-28 (133d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 04:29:14 shown | 433ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 09:26:46 | 682ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-20 23:20:37 | 973ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-31 18:20:42 | 707ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 14:36:00 | 1905ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-25 07:54:38 | 610ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 15:27:46 | 1166ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 20:15:14 | 688ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-18 18:24:38 | 1019ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 19:50:38 | 832ms | 2 NS 1 A 3 MX | 🔒 Secure |