rusen1.dk is a .dk domain served by 2 nameservers (deborah.ns.cloudflare.com, pablo.ns.cloudflare.com). It was registered on 13 April 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by eu-esec-01.heimdalsecurity.com, eu-esec-02.heimdalsecurity.com. 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 | 104.21.14.176 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | autodiscover.selmerpedersen.dk |
| _sip._tcp | 10 | 10 | 443 | sip.selmerpedersen.dk |
| TXT Record |
|---|
| MS=ms15273551 |
| v=spf1 a:mail.rusen1.dk ip4:212.10.6.136 include:spf-esec.heimdalsecurity.com include:spf.protection.outlook.com -all |
| Policy | Record (rusen1.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.rusen1.dk ip4:212.10.6.136 include:spf-esec.heimdalsecurity.com include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.rusen1.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;fo=1 |
| www | Exists, no address |
| www vs bare domain | Neither resolves rusen1.dk: no address www.rusen1.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.eu-esec-01.heimdalsecurity.com | DANE-EE · SPKI · SHA-256 | 2E8933DD6DB99304A5A9D5C4ECDE7B8E… |
| SMTP _25._tcp.eu-esec-02.heimdalsecurity.com | DANE-EE · SPKI · SHA-256 | 2E8933DD6DB99304A5A9D5C4ECDE7B8E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2411619709 |
| Primary NS (MNAME) | deborah.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2005-04-13 |
| Expires | 2027-04-30 (190d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 00:34:27 | 527ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-27 21:52:14 | 789ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-04 11:32:19 | 608ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-01 21:55:36 | 776ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-31 18:38:04 | 624ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-27 09:16:15 | 1678ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-12 16:15:39 | 1290ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-09 20:39:50 shown | 2364ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-17 23:23:43 | 1179ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-03 14:36:10 | 10109ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-28 15:15:34 | 980ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-24 21:57:01 | 907ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-23 06:27:12 | 1112ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 03:11:48 | 974ms | 2 NS 0 A 2 MX | 🔒 Secure |