delff.dk is a .dk domain served by 2 nameservers (ns.domainteam.dk, ns2.domainteam.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx01.kolabnow.com, mx02.kolabnow.com 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.domainteam.dk | 87.238.248.151 | ns.domainteam.dk | AS198614 RockyNordic ApS |
| ns2.domainteam.dk | 185.200.74.103 | ns2.domainteam.dk | AS198614 RockyNordic ApS |
| TXT Record |
|---|
| v=spf1 include:spf-a.rockynordic.com -all |
| v=spf1 mx -all |
| Policy | Record (delff.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf-a.rockynordic.com -all |
| -all (hard fail) | v=spf1 mx -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves delff.dk: no address www.delff.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx01.kolabnow.com | DANE-EE · Full cert · SHA-256 | 41B01929AFEBCF769577C1B3B9D41F0B… |
| SMTP _25._tcp.mx01.kolabnow.com | DANE-EE · Full cert · SHA-256 | C48641B0A3AA38C42B6C5BFD42A25D63… |
| SMTP _25._tcp.mx02.kolabnow.com | DANE-EE · Full cert · SHA-256 | 41B01929AFEBCF769577C1B3B9D41F0B… |
| SMTP _25._tcp.mx02.kolabnow.com | DANE-EE · Full cert · SHA-256 | C48641B0A3AA38C42B6C5BFD42A25D63… |
| SMTP _25._tcp.mx03.kolabnow.com | DANE-EE · Full cert · SHA-256 | 41B01929AFEBCF769577C1B3B9D41F0B… |
| SMTP _25._tcp.mx03.kolabnow.com | DANE-EE · Full cert · SHA-256 | C48641B0A3AA38C42B6C5BFD42A25D63… |
| 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 | 2025030101 |
| Primary NS (MNAME) | ns.domainteam.dk |
| Responsible (RNAME) | hostmaster@domainteam.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 18:44:16 | 1174ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-27 22:54:11 | 1180ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-25 10:37:22 shown | 1013ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-24 11:03:39 | 1149ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 18:00:05 | 1105ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 23:03:41 | 1152ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-17 01:36:36 | 3306ms | 2 NS 0 A 3 MX | 🔓 Insecure |