bookoo.dk is a .dk domain served by 2 nameservers (lisa.ns.cloudflare.com, zahir.ns.cloudflare.com). It was registered on 4 August 2026 (WHOIS) and first appeared in the .dk zone on 5 August 2026. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. 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.
| TXT Record |
|---|
| MS=ms53675108 |
| v=spf1 include:_spf.centerasecurity.dk -all |
| Policy | Record (bookoo.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.centerasecurity.dk -all |
| www | NXDOMAIN |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| 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 | 2411422206 |
| Primary NS (MNAME) | lisa.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-08-04 |
| Expires | 2027-08-03 (289d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 19:29:09 | 889ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-10-02 19:26:28 | 618ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-03 13:15:58 | 1448ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-28 09:22:10 | 1221ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-07 19:03:05 | 3438ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-06 11:23:43 shown | 1581ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-05 08:33:00 | 2165ms | 2 NS 0 A 0 MX | 🔓 Insecure |