birkjaer.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 October 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.150.144.81 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by mail.birkjaer.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 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 |
|---|---|---|---|---|---|---|---|
| 89.150.144.81 | 600s | x59969051.customers.hiper-net.dk | AS203953 | Hiper A/S | 89.150.128.0/18 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.birkjaer.dk | 89.150.144.81 | x59969051.customers.hiper-net.dk | AS203953 Hiper A/S |
| TXT Record |
|---|
| v=spf1 mx ~all |
| Policy | Record (birkjaer.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx ~all |
| Policy | Record (_dmarc.birkjaer.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc.report@birkjaer.com; ruf=mailto:dmarc.report@birkjaer.com; sp=none; |
| www | 89.150.144.81 (AS203953) (address records, no CNAME) |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
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 | 2026071301 |
| 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 | 2014-10-02 |
| Expires | 2026-10-31 (10d) |
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 |
|---|---|---|---|
| 2026-10-13 21:53:42 | 614ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 14:45:07 | 891ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-14 14:54:48 | 2960ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-16 07:16:52 shown | 1391ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 10:37:26 | 633ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 09:20:27 | 591ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 19:34:45 | 562ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:42:02 | 599ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:40:56 | 550ms | 2 NS 1 A 1 MX | 🔒 Secure |