sjoerup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 15 April 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.202 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk. 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 |
|---|---|---|---|---|---|---|---|
| 185.21.41.202 | 3600s | vm0521.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| 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 |
|---|
| v=spf1 ip4:94.231.103.98 ip4:94.137.138.138 ip4:185.21.41.202 ip4:94.231.106.216 include:spf.protection.outlook.com include:spf.curanet.dk include:spf.simply.com include:spf-de.emailsignatures365.com include:outbound.centerasecurity.dk include:_spf.centerasecurity.dk -all |
| Policy | Record (sjoerup.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:94.231.103.98 ip4:94.137.138.138 ip4:185.21.41.202 ip4:94.231.106.216 include:spf.protection.outlook.com include:spf.curanet.dk include:spf.simply.com include:spf-de.emailsignatures365.com include:outbound.centerasecurity.dk include:_spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.sjoerup.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc@sjoerup.dk; |
| www CNAME | sjoerup.dk (all on sjoerup.dk) → 185.21.41.202 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 9/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| 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… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100801 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-04-15 |
| Expires | 2027-06-30 (256d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 15:29:54 shown | 3176ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-25 09:32:38 | 2567ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-14 06:14:04 | 1553ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-07 03:29:27 | 2768ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-10 19:22:36 | 1203ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-10 15:19:13 | 1462ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-06 09:33:08 | 1049ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-04 07:33:37 | 3312ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-02 22:04:12 | 5825ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-24 15:59:46 | 774ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 11:24:56 | 3219ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-23 00:53:29 | 914ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 19:59:43 | 763ms | 2 NS 1 A 2 MX | 🔒 Secure |