a00.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 19 August 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by c-team-dk.mx1.staysecuregroup.com, c-team-dk.mx2.staysecuregroup.net. The zone is DNSSEC-signed and validates, has no 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | www.c-team.dk → 89.239.195.133 |
| 🔶 Autoconfig | www.c-team.dk → 89.239.195.133 |
| TXT Record |
|---|
| v=spf1 a mx ip4:87.48.130.105 ip4:87.48.130.101 include:_spf.stejtech.net ~all |
| Policy | Record (a00.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx ip4:87.48.130.105 ip4:87.48.130.101 include:_spf.stejtech.net ~all |
| www CNAME | www.c-team.dk (all on c-team.dk) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.a00.dk | www.c-team.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026041201 |
| 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 | 2008-08-19 |
| Expires | 2027-08-31 (315d) |
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 |
|---|---|---|---|
| 2026-10-09 21:54:21 | 1839ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-29 18:21:49 | 622ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-24 09:17:05 | 3127ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-06 12:06:33 | 807ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-03 20:22:01 | 1287ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-28 03:52:32 shown | 990ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-06 20:47:52 | 9456ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-22 16:44:58 | 835ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-21 16:34:45 | 945ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-16 12:44:47 | 596ms | 2 NS 0 A 2 MX | 🔒 Secure |