efterskoler.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 51.91.60.4 is hosted by OVH SAS (AS16276) in France. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 51.91.60.4 | 60s | — | AS16276 | OVH SAS | 51.91.0.0/16 | 🇫🇷 France | — |
| 93.191.155.240 | 60s | forward.dnsfactory.dk | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2001:41d0:301:100:51:91:60:4 | 600s | — | AS16276 | OVH SAS | 2001:41d0:0:0:0:0:0:0/33 | 🇫🇷 France | — |
| www | Address record (no CNAME) |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2023061501 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 15:56:47 | 479ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-02 23:41:37 | 906ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-27 22:22:24 shown | 2499ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-25 11:56:29 | 4283ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-17 06:05:48 | 556ms | 2 NS 2 A 0 MX | 🔒 Secure |