doortec.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.60.89.57 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mx1.forwardemail.net, mx2.forwardemail.net. 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 |
|---|---|---|---|---|---|---|---|
| 87.60.89.57 | 43200s | 87-60-89-57-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.60.0.0/16 | 🇩🇰 Denmark | Vedbæk |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | doortec.dk → 87.60.89.57 |
| 🔶 Autoconfig | doortec.dk → 87.60.89.57 |
| TXT Record |
|---|
| forward-email-site-verification=ujgTrZOIUB |
| v=spf1 +a +mx +a:WIN-GM8N8KNBOOR.local -all |
| Policy | Record (doortec.dk) |
|---|---|
| -all (hard fail) | v=spf1 +a +mx +a:WIN-GM8N8KNBOOR.local -all |
| Policy | Record (_dmarc.doortec.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| www CNAME | doortec.dk (all on doortec.dk) → 87.60.89.57 (AS3292) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.doortec.dk | doortec.dk |
| TXT | doortec.dk | forward-email-site-verification=ujgTrZOIUB |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.forwardemail.net | DANE-EE · SPKI · SHA-256 | 5E81DA1AF16DF20B13E667AD6D9C2B65… |
| SMTP _25._tcp.mx1.forwardemail.net | DANE-EE · SPKI · SHA-256 | 321F694EAD3A2E733D857FD7E79D811F… |
| SMTP _25._tcp.mx2.forwardemail.net | DANE-EE · SPKI · SHA-256 | 321F694EAD3A2E733D857FD7E79D811F… |
| SMTP _25._tcp.mx2.forwardemail.net | DANE-EE · SPKI · SHA-256 | 5E81DA1AF16DF20B13E667AD6D9C2B65… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026032401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 19:16:38 | 2994ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 19:02:19 | 646ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 06:51:00 | 1390ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 05:03:40 | 832ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-07 09:22:49 shown | 1288ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-28 10:09:27 | 14315ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-26 15:48:05 | 2384ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 04:16:15 | 2560ms | 2 NS 1 A 2 MX | 🔒 Secure |