arbejdersangbogen.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.249.12 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.spamfilter.io. 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 |
|---|---|---|---|---|---|---|---|
| 212.237.249.12 | 3600s | lb1.builder.nu | AS48854 | team.blue Denmark A/S | 212.237.248.0/23 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.dandomain.dk → 212.237.249.98 |
| 🔶 Autoconfig | autoconfig-mf.dandomain.dk → 212.237.249.54 |
| TXT Record |
|---|
| v=spf1 include:spf.dandomain.dk -all |
| Policy | Record (arbejdersangbogen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.dandomain.dk -all |
| Policy | Record (_dmarc.arbejdersangbogen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 212.237.249.12 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.spamfilter.io | DANE-EE · SPKI · SHA-256 | 9A25F05F2E322DABDCC9B7A06AB47A2D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026091401 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-20 06:22:22 shown | 815ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 04:51:39 | 1729ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 11:06:06 | 566ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-25 19:50:08 | 804ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-24 20:53:41 | 721ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-24 19:35:33 | 506ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-22 23:57:52 | 948ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 13:38:17 | 561ms | 2 NS 1 A 0 MX | 🔒 Secure |