d-a-b.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 October 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.241.64 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.241.64 | 3600s | webcluster1.wordpresspod2-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:104:5:14e3:67aa:7a0b | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| v=spf1 a mx include:spf.protection.outlook.com a:outbound.centerasecurity.dk include:_spf.createsend.com ~all |
| Policy | Record (d-a-b.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx include:spf.protection.outlook.com a:outbound.centerasecurity.dk include:_spf.createsend.com ~all |
| Policy | Record (_dmarc.d-a-b.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 77.111.241.64 2a02:2350:5:104:5:14e3:67aa:7a0b (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network d-a-b.dk: 77.111.241.64 2a02:2350:5:104:5:14e3:67aa:7a0b (AS51468) www.d-a-b.dk: 77.111.241.64 2a02:2350:5:104:5:14e3:67aa:7a0b (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 5/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101205 |
| 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 | 1998-10-16 |
| Expires | 2030-12-31 (1536d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 03:53:30 shown | 515ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 18:08:20 | 1287ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-26 17:32:32 | 788ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 16:57:50 | 4535ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-21 17:57:37 | 2047ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-10 15:23:06 | 715ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-14 12:24:48 | 2084ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-13 10:12:07 | 1153ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 00:25:38 | 1310ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 00:02:03 | 850ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 10:09:50 | 594ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 23:52:04 | 2645ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 23:31:06 | 813ms | 2 NS 1 A 2 MX | 🔒 Secure |