sacs.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.zfu.dk. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.zfu.dk | 5.186.52.29 | 5.186.52.29.static.fibianet.dk | AS44869 FIBIA P/S |
| TXT Record |
|---|
| v=spf1 a mx -all |
| Policy | Record (sacs.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves sacs.dk: no address www.sacs.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026041707 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | post@dns.services |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 7200s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-05 07:36:51 | 546ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-28 00:26:04 | 672ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-09 21:20:18 shown | 1198ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-25 11:27:40 | 2621ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 04:29:34 | 1153ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-20 18:41:01 | 1186ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 13:02:54 | 2254ms | 3 NS 0 A 1 MX | 🔓 Insecure |