birk-holm.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 November 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.169 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by birkholm-dk01b.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.30.215.169 | — | webcluster2.webpod17-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:106:80f8:9c89:269b:4ab5 | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (birk-holm.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 46.30.215.169 2a02:2350:5:106:80f8:9c89:269b:4ab5 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network birk-holm.dk: 46.30.215.169 2a02:2350:5:106:80f8:9c89:269b:4ab5 (AS51468) www.birk-holm.dk: 46.30.215.169 2a02:2350:5:106:80f8:9c89:269b:4ab5 (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-birkholm-dk01b._domainkey.birkholm.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-birkholm-dk01b._domainkey.birkholm.onmicrosoft.com | RSA · ~1024 bit below 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 | 2026061501 |
| 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 | 1998-11-06 |
| Expires | 2026-12-31 (70d) |
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 |
|---|---|---|---|
| 2026-10-21 00:07:47 | 1856ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 23:02:15 | 1721ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 22:48:30 | 1010ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 14:48:15 | 1599ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 20:54:26 | 875ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 04:13:00 | 5317ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-22 04:41:08 | 2205ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 10:02:55 | 1332ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 11:55:42 | 699ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 07:28:57 | 3783ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:39:07 shown | 616ms | 2 NS 1 A 1 MX | 🔒 Secure |