studentsystems.dk is a .dk domain served by 2 nameservers (susan.ns.cloudflare.com, tosana.ns.cloudflare.com). It was registered on 14 August 2026 (WHOIS) and first appeared in the .dk zone on 15 August 2026. The zone is not DNSSEC-signed, 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.
| www | NXDOMAIN |
| www vs bare domain | www does not resolve studentsystems.dk: 104.21.50.212 172.67.167.115 2606:4700:3031::ac43:a773 2606:4700:3033::6815:32d4 (AS13335) (all like this)www.studentsystems.dk: no address |
| Wildcard | No |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.studentsystems.dk | A_5Vxw9YBo7wCNrhDoKrNtBK5qEwWlQHbHA9H2CBzSo |
| TXT | _acme-challenge.studentsystems.dk | jVS799-vFVZVHuMeofgQkUxMll0sPOypmUmAbBJCPZ8 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2412712775 |
| Primary NS (MNAME) | susan.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-08-14 |
| Expires | 2027-08-13 (296d) |
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).
| Domain | Registrar |
|---|---|
| byboe.dk | Simply.com A/S |
| dejligehvalpe.dk | Simply.com A/S |
| djboye.dk | Punktum dk A/S (direct) |
| studentplan.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 18:50:23 | 2635ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-08 12:07:11 | 1245ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-28 05:10:20 | 1305ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-29 12:03:11 | 1277ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-28 11:48:15 | 1735ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-27 11:30:51 | 2448ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-24 15:30:55 | 933ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-23 10:38:43 | 1404ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-21 08:35:13 shown | 1489ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-18 06:21:27 | 2052ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-16 23:02:09 | 2419ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-15 08:37:13 | 3929ms | 2 NS 0 A 0 MX | 🔓 Insecure |