build4.dk is a .dk domain served by 2 nameservers (inet.dti.dk, inet2.dti.dk). It was registered on 10 May 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.54.37.116 is hosted by TDC Holding A/S (AS3292) in Denmark. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| inet.dti.dk | 87.54.37.66 | inet.dti.dk | AS3292 TDC Holding A/S |
| inet2.dti.dk | 62.243.15.66 | inet2.dti.dk | AS3292 TDC Holding A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.54.37.116 | 7200s | — | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | — |
| www CNAME | build4.teknologisk.dk (all on teknologisk.dk) → 87.54.37.116 (AS3292) |
| www vs bare domain | Same network |
| Wildcard | No |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.build4.dk | iq1SLWyR5EyQRgoIdqTvC3LRD9tghl-7uEu-K00cg5Y |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026100577 |
| Primary NS (MNAME) | inet.dti.dk |
| Responsible (RNAME) | postmaster@dti.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | WEB SOLUTIONS A/S |
| Registered | 2017-05-10 |
| Expires | 2027-05-31 (226d) |
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).
Showing 100 of 170.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 09:40:04 | 914ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-06 04:58:17 shown | 449ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-30 04:05:25 | 381ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-26 07:15:06 | 441ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-22 05:45:13 | 420ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-10 07:51:52 | 19842ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-02 00:57:24 | 451ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-16 17:40:55 | 415ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-16 17:40:19 | 464ms | 2 NS 1 A 0 MX | 🔓 Insecure |