optimumgroup.dk is a .dk domain served by 3 nameservers (nsauth1.introweb.nl, nsauth2.introweb.nl, nsauth3.introweb.net). It was registered on 10 December 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.13.155.44 is hosted by Neue Medien Muennich GmbH (AS34788) in Germany. Mail is handled by optimumgroup-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 85.13.155.44 | 3600s | dd38538.kasserver.com | AS34788 | Neue Medien Muennich GmbH | 85.13.128.0/18 | 🇩🇪 Germany | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.152 |
| TXT Record |
|---|
| google-site-verification=iBK9wylFRtFzFWila3InIYnRZHfD-8ajXNgyYgibJRg |
| MS=ms46259138 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (optimumgroup.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 85.13.155.44 (AS34788) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2022092901 |
| Primary NS (MNAME) | nsauth1.introweb.nl |
| Responsible (RNAME) | postmaster@introweb.nl |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-12-10 |
| Expires | 2026-12-31 (75d) |
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 |
|---|---|---|---|
| 2026-10-09 08:31:22 shown | 1793ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-28 05:13:25 | 2650ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 05:56:56 | 3308ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-22 00:56:57 | 875ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 20:53:10 | 1297ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 19:49:07 | 1202ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 04:01:16 | 1511ms | 3 NS 1 A 1 MX | 🔓 Insecure |