simplybooks.dk is a .dk domain served by 3 nameservers (ns1.openprovider.nl, ns2.openprovider.be, ns3.openprovider.eu). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.simplybooks.dk. The zone is not DNSSEC-signed, 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 86400s | mail.simplybooks.dk | 127.0.0.1 | localhost | — |
| www CNAME | simplybooks.dk (all on simplybooks.dk) |
| www vs bare domain | Same network |
| 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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2015062901 |
| Primary NS (MNAME) | ns1.openprovider.nl |
| Responsible (RNAME) | dns\@openprovider@eu |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:00:26 shown | 1105ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-16 11:34:43 | 9558ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-01 09:22:31 | 837ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-21 00:05:35 | 32566ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 00:54:17 | 1910ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 00:34:30 | 718ms | 3 NS 1 A 1 MX | ⚠️ Bogus |