usrtech.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 15 November 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 172.104.203.63 is hosted by Akamai Connected Cloud (AS63949) in Germany. Mail is handled by mail.usrtech.dk, mxbackup.usrtech.dk. 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 |
|---|---|---|---|---|---|---|---|
| 172.104.203.63 | — | mail.weblarsen.dk | AS63949 | Akamai Connected Cloud | 172.104.202.0/23 | 🇩🇪 Germany | Frankfurt am Main |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail.usrtech.dk | 172.104.203.63 | mail.weblarsen.dk | AS63949 Akamai Connected Cloud |
| 20 | — | mxbackup.usrtech.dk | 172.104.203.63 | mail.weblarsen.dk | AS63949 Akamai Connected Cloud |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 172.104.203.63 |
| 🔶 Autoconfig | 172.104.203.63 |
| TXT Record |
|---|
| Hosted by Weblarsen |
| v=spf1 mx ip4:172.104.152.106 ip4:139.162.130.163 ip4:172.104.203.63 -all |
| Policy | Record (usrtech.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx ip4:172.104.152.106 ip4:139.162.130.163 ip4:172.104.203.63 -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves usrtech.dk: no address www.usrtech.dk: no address |
| 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: 1/10 · 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 | 2026032501 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | DNS Platform ApS |
| Registered | 2013-11-15 |
| Expires | 2026-11-30 (40d) |
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 |
|---|---|
| firecrew.dk | DNS Platform ApS |
| spamwatch.dk | DNS Platform ApS |
| vagtadmin.dk | Punktum dk A/S (direct) |
| vagtleder.dk | DNS Platform ApS |
| vc-indberet.dk | Punktum dk A/S (direct) |
| vikaradmin.dk | DNS Platform ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 11:25:19 | 2150ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-19 06:23:06 | 704ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-11 23:11:24 | 2039ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-10 21:52:07 | 658ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-02 13:59:12 | 489ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-01 19:31:29 | 623ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-23 17:52:43 | 597ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-23 14:39:53 | 613ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-03 08:23:44 | 4770ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 23:20:47 | 636ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 05:15:43 shown | 890ms | 2 NS 1 A 2 MX | 🔒 Secure |