attrain.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 25 October 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.166.0.78 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch and 2 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 |
|---|---|---|---|---|---|---|---|
| 93.166.0.78 | 43200s | 93-166-0-78-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 93.166.0.0/15 | 🇩🇰 Denmark | Køge |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| protonmail-verification=88cbea2346288e7b7ff5156fbe579e1acfa47e70 |
| v=spf1 include:_spf.protonmail.ch include:spf.protection.outlook.com include:_custspf.one.com -all |
| Policy | Record (attrain.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.protonmail.ch include:spf.protection.outlook.com include:_custspf.one.com -all |
| Policy | Record (_dmarc.attrain.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Different networks (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026071701 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2016-10-25 |
| Expires | 2026-10-31 (9d) |
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 |
|---|---|
| leagueunlimited.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 07:02:40 | 1756ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-15 19:36:17 | 2006ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-08 03:15:10 | 1138ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-12 08:24:50 | 2301ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-07 18:40:35 | 5851ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-26 20:18:48 shown | 5651ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-18 01:43:04 | 9516ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-12 14:53:16 | 1343ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 15:32:47 | 2000ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 13:59:16 | 3620ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 13:49:25 | 1193ms | 2 NS 1 A 4 MX | 🔒 Secure |