optiwork.dk is a .dk domain served by 3 nameservers (ns4.dns-123.net, ns5.dns-123.net, ns6.dns-123.net). It was registered on 9 May 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.186.164.157 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by ASPMX.L.GOOGLE.COM, ALT1.ASPMX.L.GOOGLE.COM and 5 more. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 5.186.164.157 | — | server7157.serverpark.dk | AS44869 | FIBIA P/S | 5.186.0.0/16 | 🇩🇰 Denmark | Frederiksberg |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com include:_spf.serverpark.dk mx a ~all |
| Policy | Record (optiwork.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.google.com include:_spf.serverpark.dk mx a ~all |
| Policy | Record (_dmarc.optiwork.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 94.231.103.100 (AS48854) (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 | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 4/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025121602 |
| Primary NS (MNAME) | ns4.dns-123.net |
| Responsible (RNAME) | admin@dns-123.net |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2019-05-09 |
| Expires | 2027-05-31 (224d) |
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).
| Domain | Registrar |
|---|---|
| aqstik.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 08:42:25 | 1361ms | 3 NS 1 A 7 MX | 🔓 Insecure |
| 2026-10-14 04:54:43 | 926ms | 3 NS 1 A 7 MX | 🔓 Insecure |
| 2026-10-07 17:13:10 | 861ms | 3 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-30 18:34:38 | 896ms | 3 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-24 14:49:09 | 2696ms | 3 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-12 02:14:33 | 9610ms | 3 NS 1 A 7 MX | 🔒 Secure |
| 2026-08-26 06:57:43 | 2827ms | 3 NS 1 A 7 MX | 🔒 Secure |
| 2026-06-17 13:40:50 shown | 2853ms | 3 NS 1 A 7 MX | 🔒 Secure |