studenter.dk is a .dk domain served by 3 nameservers (ns05.sac-it.dk, ns06.sac-it.dk, ns06us.sac-it.dk). It was registered on 20 February 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.235.243.87 is hosted by Norlys Telco A/S (AS3308) in Denmark. Mail is handled by smtp.google.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 85.235.243.87 | 3600s | 87.0-127.243.235.85.in-addr.arpa | AS3308 | Norlys Telco A/S | 85.235.224.0/19 | 🇩🇰 Denmark | Hørsholm |
| TXT Record |
|---|
| google-site-verification=qMZxYLL-X-rrYRpHm-HvALalXq_5wSlGkUPdnmT0vXk |
| v=spf1 include:_spf.google.com ~all |
| Policy | Record (studenter.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.google.com ~all |
| Policy | Record (_dmarc.studenter.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc.reports@rekomgroup.com; pct=100; fo=1 |
| www | 85.235.243.87 (AS3308) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026040201 |
| Primary NS (MNAME) | ns05.sac-it.dk |
| Responsible (RNAME) | hostmaster@studenter.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2013-02-20 |
| Expires | 2027-07-31 (286d) |
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).
Showing 100 of 110.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-23 12:02:33 | 890ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-17 03:32:30 | 9810ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-26 00:16:30 shown | 658ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 01:53:44 | 1146ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 16:34:48 | 918ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 14:17:25 | 3488ms | 3 NS 1 A 1 MX | 🔓 Insecure |