sikkerskole.dk is a .dk domain served by 2 nameservers (ns.semaphor.dk, ns2.semaphor.dk). It was registered on 25 August 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 45.156.8.54 is hosted by Semaphor (AS201697) in Denmark. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.semaphor.dk | 195.190.25.50 | ns.semaphor.dk | AS201697 Semaphor |
| ns2.semaphor.dk | 85.235.240.108 | ns2.semaphor.dk | AS3308 Norlys Telco A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 45.156.8.54 | 38400s | hjulben4.semaphor.dk | AS201697 | Semaphor | 45.156.8.0/22 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 include:_spf.semaphor.dk -all |
| Policy | Record (sikkerskole.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.semaphor.dk -all |
| Policy | Record (_dmarc.sikkerskole.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www CNAME | hjulben.semaphor.dk (all on semaphor.dk) |
| www vs bare domain | Same network sikkerskole.dk: 45.156.8.54 (AS201697) www.sikkerskole.dk: 195.190.25.53 45.156.8.52 45.156.8.54 2001:678:72c:fa00:45:156:8:52 (AS201697) |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sikkerskole.dk | sikkerskole.dk.acme.semaphor.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025082700 |
| Primary NS (MNAME) | ns.semaphor.dk |
| Responsible (RNAME) | hostmaster@semaphor.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 38400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2022-08-25 |
| Expires | 2027-08-24 (300d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-28 00:54:37 | 535ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-23 05:53:52 | 483ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-27 16:24:12 | 589ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-27 05:57:03 shown | 631ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-26 14:45:41 | 2475ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-18 23:53:32 | 469ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-17 17:31:40 | 2867ms | 2 NS 1 A 0 MX | 🔓 Insecure |