sifgruppen.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 11 May 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.95.249.247 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.sif.dk. The zone is DNSSEC-signed but currently fails validation, 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 |
|---|---|---|---|---|---|---|---|
| 81.95.249.247 | 3600s | dw10-d003.dw-mgmt.lan | AS48854 | team.blue Denmark A/S | 81.95.240.0/20 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 20 | 3600s | mx.sif.dk | 81.95.249.247 | dw10-d003.dw-mgmt.lan | AS48854 team.blue Denmark A/S |
| www | 81.95.249.247 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: insecurity proof failed |
| Field | Value |
|---|---|
| Serial | 2026060101 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2010-05-11 |
| Expires | 2027-04-30 (187d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-25 05:31:06 | 580ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 21:53:47 | 1544ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 11:37:47 | 708ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 13:24:03 | 9661ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 03:53:47 | 25642ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 10:39:25 shown | 2477ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-22 04:13:43 | 1166ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:57:22 | 2391ms | 2 NS 1 A 1 MX | 🔒 Secure |