birgenholm.dk is a .dk domain served by 2 nameservers (ns1.dnsserver.dk, ns2.dnsserver.dk). It was registered on 7 January 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.8.37.86 is hosted by Norlys Telco A/S (AS3308) in Denmark. Mail is handled by birgenholm-dk.mail.protection.outlook.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 193.8.37.86 | 3600s | — | AS3308 | Norlys Telco A/S | 193.8.36.0/23 | 🇩🇰 Denmark | Ølstykke |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.179.56 |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (birgenholm.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.birgenholm.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; adkim=s; aspf=s; |
| www | 94.231.106.195 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026012201 |
| Primary NS (MNAME) | ns1.dnsserver.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-01-07 |
| Expires | 2027-01-06 (72d) |
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 |
|---|---|---|---|
| 2026-10-25 12:09:42 | 468ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 00:32:05 | 398ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-25 15:46:36 | 563ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 17:38:10 | 981ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 13:09:39 | 857ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 17:59:17 | 1673ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 17:10:16 shown | 1044ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:39:08 | 572ms | 2 NS 1 A 1 MX | 🔒 Secure |