castgroup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 12 February 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.106.179 is hosted by team.blue Denmark A/S (AS48854) in Denmark. The zone is DNSSEC-signed but currently fails validation, publishes a 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 94.231.106.179 | 3600s | linux219.curanet.dk | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (castgroup.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.castgroup.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@fbdk.dk; ruf=mailto:dmarc@fbdk.dk; fo=1; |
| www | 94.231.106.179 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: insecurity proof failed |
| Field | Value |
|---|---|
| Serial | 2026052701 |
| 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 | ONE.COM A/S |
| Registered | 2021-02-12 |
| Expires | 2027-02-28 (134d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 21:08:00 | 522ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-26 21:01:07 | 466ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-08 09:51:08 | 506ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-31 19:26:05 | 465ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-28 03:17:30 | 440ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-28 13:50:44 | 2421ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-09 20:05:01 | 4583ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-03 12:35:16 | 466ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-01 06:13:50 | 981ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-28 14:35:02 | 518ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-26 10:57:55 | 1278ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-23 04:22:16 shown | 667ms | 2 NS 1 A 0 MX | ⚠️ Bogus |
| 2026-06-16 19:45:55 | 519ms | 2 NS 1 A 0 MX | 🔒 Secure |