ost-e.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 3 April 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. On 21 October 2026 we saw it transfer from Simply.com A/S to DANDOMAIN A/S. 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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| TXT Record |
|---|
| centera-verification=97966944a36cff3c1b1c8369c007b8c1d136ac75 |
| MS=ms19684396 |
| v=spf1 include:spf.protection.outlook.com include:spf.centerasecurity.dk -all |
| Policy | Record (ost-e.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.ost-e.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@ost-e.dk; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves ost-e.dk: no address www.ost-e.dk: no address |
| Wildcard | No |
DNS lookups: 2/10 · 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… |
| 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026081200 |
| 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 | DANDOMAIN A/S |
| Registered | 2009-04-03 |
| Expires | 2027-04-30 (189d) |
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).
| Domain | Registrar |
|---|---|
| ostergaard-entreprise.dk | DANDOMAIN A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 14:08:29 | 1763ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-10-20 23:54:40 | 3345ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-10-19 19:19:15 | 1017ms | 3 NS 0 A 3 MX | 🔒 Secure |
| 2026-10-13 10:59:04 | 470ms | 3 NS 0 A 3 MX | 🔒 Secure |
| 2026-10-02 16:07:53 | 1060ms | 3 NS 0 A 3 MX | 🔒 Secure |
| 2026-08-25 15:43:20 | 695ms | 3 NS 0 A 3 MX | 🔒 Secure |
| 2026-08-12 12:05:09 shown | 5646ms | 3 NS 0 A 3 MX | 🔒 Secure |
| 2026-08-06 13:37:49 | 25082ms | 3 NS 0 A 3 MX | 🔒 Secure |
| 2026-06-23 16:30:11 | 778ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-18 01:11:57 | 1592ms | 3 NS 0 A 1 MX | 🔒 Secure |