op-ejendomsservice.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 9 July 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by opejendomsservice-dk0e.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (op-ejendomsservice.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 185.158.133.1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| 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: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.op-ejendomsservice.dk | 36buslCO1r7g1oYfXbya4Ik6fx6JmVLuq7ITgwXz9kA |
| TXT | _acme-challenge.op-ejendomsservice.dk | EEhd3Oxn9MDdDbGcPntbd3XOnn4RU0u3EX1tn0TkNPs |
| TXT | _acme-challenge.op-ejendomsservice.dk | SDZeFcrBf7lnzwo_VOxPiuFGJ4Mxd33gRrxaGF6R3QI |
| TXT | _acme-challenge.op-ejendomsservice.dk | oNpY99VZubcvUAoDP4UgUWWlTyS8Q0MNQ4Ps9G_7Aa0 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2023120700 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2008-07-09 |
| Expires | 2027-07-31 (278d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 19:05:46 | 799ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 12:34:19 | 529ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 02:13:25 | 728ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 13:03:07 | 660ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 18:39:02 | 1232ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-06 10:51:17 | 1475ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 10:22:14 | 793ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-26 05:06:56 shown | 906ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-24 19:07:00 | 840ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-18 15:07:54 | 682ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 15:08:20 | 1064ms | 4 NS 0 A 1 MX | ❓ Unknown |