mattern.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). Mail is handled by mattern-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| TXT Record |
|---|
| MS=ms70866596 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (mattern.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.mattern.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | NXDOMAIN |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-mattern-dk._domainkey.matternvvs.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-mattern-dk._domainkey.matternvvs.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025012802 |
| Primary NS (MNAME) | ns.scannet2.dk |
| Responsible (RNAME) | hostmaster@scannet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-14 20:43:44 shown | 638ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 16:32:00 | 946ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 05:23:57 | 1094ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 13:55:30 | 4334ms | 2 NS 0 A 1 MX | 🔒 Secure |