opstart.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 8 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.139 is hosted by team.blue Denmark A/S (AS48854) in Denmark. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 94.231.103.139 | — | linux128.unoeuro.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 94.231.103.139 |
| 🔶 Autoconfig | 94.231.103.139 |
| www | 94.231.103.139 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| 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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2023100501 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2023-06-08 |
| Expires | 2027-06-07 (232d) |
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 |
|---|---|
| boplus.dk | Simply.com A/S |
| cah.dk | Simply.com A/S |
| dasa.dk | Simply.com A/S |
| havesjov.dk | Simply.com A/S |
| pricematch.dk | Simply.com A/S |
| rma.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 00:19:13 | 629ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-22 09:56:40 | 612ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-06 17:54:46 | 2289ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-01 18:58:28 | 2344ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-27 06:51:47 | 701ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-26 00:51:25 | 541ms | 3 NS 1 A 0 MX | ❓ Unknown |
| 2026-06-25 23:05:46 | 469ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-23 22:43:16 | 1186ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 18:08:59 | 743ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-20 15:57:02 | 938ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 21:59:21 shown | 705ms | 3 NS 1 A 0 MX | 🔒 Secure |