zxf.dk is a .dk domain served by 4 nameservers (ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org and 1 more). It was registered on 21 December 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by zxf-dk.b-v1.mx.microsoft. The zone is DNSSEC-signed but currently fails validation, publishes a 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.213.232 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (zxf.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.zxf.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@zxf.dk; |
| www | Exists, no address |
| www vs bare domain | Neither resolves zxf.dk: no address www.zxf.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.zxf-dk.b-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 5F88694615E4C61686E106B84C3338C6… |
| SMTP _25._tcp.zxf-dk.b-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 6EBFF927297A5B3AAF5EAE672252C36A… |
| SMTP _25._tcp.zxf-dk.b-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | A6C267923B26A4A9617EDA73D8DB4FBC… |
| SMTP _25._tcp.zxf-dk.b-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | C495D9E40F7E625BE22F83CC64305182… |
| SMTP _25._tcp.zxf-dk.b-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 38D895F5105BC2545822C17A2444F4B0… |
| SMTP _25._tcp.zxf-dk.b-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 133086C7B822371A4A3304F1661A7880… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 1 |
| Primary NS (MNAME) | ns1-05.azure-dns.com |
| Responsible (RNAME) | azuredns-hostmaster@microsoft.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2011-12-21 |
| Expires | 2035-12-31 (3354d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 23:28:50 | 485ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 20:57:01 | 668ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 08:00:05 | 695ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-25 16:57:26 | 662ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-27 05:16:31 | 2297ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 05:58:08 | 1157ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-22 14:33:58 shown | 4012ms | 4 NS 0 A 1 MX | ⚠️ Bogus |
| 2026-06-21 11:32:54 | 930ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 00:59:21 | 1029ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-18 04:43:03 | 1282ms | 4 NS 0 A 1 MX | 🔒 Secure |