birknielsen.dk is a .dk domain served by 4 nameservers (ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org and 1 more). It was registered on 19 May 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.45.73.247 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by birknielsen-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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.45.73.247 | 3600s | — | AS8075 | Microsoft Corporation | 104.40.0.0/13 | 🇳🇱 The Netherlands | Amsterdam |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | birknielsen-dk.mail.protection.outlook.com | — | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| TXT Record |
|---|
| MS=ms96015518 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (birknielsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.birknielsen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| www CNAME | birknielsen.dk (all on birknielsen.dk) → 104.45.73.247 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 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 | 2013111211 |
| Primary NS (MNAME) | ns1-05.azure-dns.com |
| Responsible (RNAME) | domain@sweco.se |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | InterNetX GmbH |
| Registered | 1998-05-19 |
| Expires | 2027-06-30 (253d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 02:30:26 shown | 1164ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 05:32:27 | 538ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 00:54:05 | 497ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 14:42:41 | 1149ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:43:12 | 427ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:40:51 | 515ms | 4 NS 1 A 1 MX | 🔒 Secure |