knivkurser.dk is a .dk domain served by 2 nameservers (aarav.ns.cloudflare.com, addilyn.ns.cloudflare.com). It was registered on 18 August 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.105.224.40 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by knivkurser-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 20.105.224.40 | 300s | — | AS8075 | Microsoft Corporation | 20.64.0.0/10 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.31.117 |
| TXT Record |
|---|
| v=spf1 ip4:40.67.208.1 ip4:20.126.124.177 ip4:23.97.187.218 include:spf.protection.outlook.com -all |
| Policy | Record (knivkurser.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:40.67.208.1 ip4:20.126.124.177 ip4:23.97.187.218 include:spf.protection.outlook.com -all |
| www | 104.21.31.117 172.67.176.124 2606:4700:3032::ac43:b07c 2606:4700:3033::6815:1f75 (AS13335) (address records, no CNAME) |
| www vs bare domain | Different networks knivkurser.dk: 20.105.224.40 (AS8075) (all like this)www.knivkurser.dk: 104.21.31.117 172.67.176.124 2606:4700:3032::ac43:b07c 2606:4700:3033::6815:1f75 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2416260432 |
| Primary NS (MNAME) | aarav.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2020-08-18 |
| Expires | 2027-08-31 (317d) |
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 |
|---|---|---|---|
| 2026-10-01 08:27:33 shown | 1571ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 08:16:01 | 795ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 16:10:04 | 2148ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 00:09:30 | 1189ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 13:07:00 | 1104ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 15:47:53 | 891ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 01:12:42 | 2542ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-14 14:18:43 | 1281ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-02 16:19:05 | 17338ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-20 23:30:09 | 1261ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-19 20:38:43 | 1661ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-28 16:28:20 | 1509ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 02:26:18 | 3436ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 04:30:51 | 1292ms | 2 NS 1 A 1 MX | 🔒 Secure |