123booking.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 4 February 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 40.115.112.33 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by mx.simply.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 this 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 |
|---|---|---|---|---|---|---|---|
| 40.115.112.33 | 3600s | — | AS8075 | Microsoft Corporation | 40.112.0.0/13 | 🇮🇪 Ireland | Dublin |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 40.115.112.33 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (123booking.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| www | 40.115.112.33 (AS8075) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025042300 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2003-02-04 |
| Expires | 2031-02-28 (1595d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 17:17:09 | 1084ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 17:35:22 | 1348ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 04:11:41 | 994ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-16 14:39:35 | 1004ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-18 02:35:41 | 1501ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-14 23:18:50 | 4426ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-18 20:27:25 | 1052ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 12:55:32 | 5409ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 06:48:54 shown | 828ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 12:50:35 | 1569ms | 4 NS 1 A 1 MX | 🔒 Secure |