bookboon.dk is a .dk domain served by 4 nameservers (ns-1352.awsdns-41.org, ns-160.awsdns-20.com, ns-1840.awsdns-38.co.uk and 1 more). It was already in the .dk zone when our tracking began on 16 June 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns-1352.awsdns-41.org | — | — | — |
| ns-160.awsdns-20.com | — | — | — |
| ns-1840.awsdns-38.co.uk | — | — | — |
| ns-913.awsdns-50.net | — | — | — |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves bookboon.dk: no address www.bookboon.dk: no address |
| Wildcard | No |
| 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 | 1 |
| Primary NS (MNAME) | ns-1840.awsdns-38.co.uk |
| Responsible (RNAME) | awsdns-hostmaster@amazon.com |
| Refresh | 7200s |
| Retry | 900s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-11 14:58:16 | 12689ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-27 23:13:44 | 2876ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-07-02 16:59:48 | 12070ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-23 02:08:39 | 1618ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-22 23:08:29 | 1126ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 18:05:41 | 612ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-20 17:10:17 | 692ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-20 16:15:24 | 1798ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-16 15:55:08 shown | 400ms | 4 NS 0 A 0 MX | 🔓 Insecure |