certuscloud.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 26 September 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.certuscloud.dk. The zone is DNSSEC-signed but currently fails validation, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 94.231.103.100 | 600s | dnsforward.simply.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.certuscloud.dk | — | — | — |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'certuscloud.dk/DS/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2024050100 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2022-09-26 |
| Expires | 2026-09-25 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 00:50:21 | 349ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-20 17:06:31 | 111ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-19 11:31:42 | 221ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-18 11:14:32 | 103ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-17 11:12:30 | 215ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-16 10:59:25 | 310ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-15 05:10:18 | 343ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-14 03:30:07 | 287ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-12 19:51:43 | 167ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-11 18:40:47 | 203ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-10 17:37:50 | 327ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-09 13:30:42 | 794ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-09 03:47:46 | 778ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-08 03:42:03 | 565ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-07 03:35:49 | 580ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-06 02:58:38 | 154ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-05 02:55:55 | 920ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-04 02:48:21 | 179ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-03 02:46:10 | 105ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-02 02:44:05 | 544ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-01 02:37:42 | 231ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-30 02:27:38 | 620ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-30 00:08:22 | 249ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-29 00:02:46 | 916ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-23 20:34:23 | 431ms | 4 NS 1 A 1 MX | 🔒 Secure |