sen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 August 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 209.212.158.89 is hosted by GigeNET (AS32181) in United States. Mail is handled by mail.sen.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 |
|---|---|---|---|---|---|---|---|
| 209.212.158.89 | 600s | mail.sen.dk | AS32181 | GigeNET | 209.212.144.0/20 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail.sen.dk | 209.212.158.89 | mail.sen.dk | AS32181 GigeNET |
| TXT Record |
|---|
| google-site-verification=xZYI0Rl4Rvhp0wnuMIgr3fqXPLTlVma-n3Q1GyVtFwE |
| v=spf1 mx a include:_spf.anpdm.com include:spf.mandrillapp.com ~all |
| Policy | Record (sen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx a include:_spf.anpdm.com include:spf.mandrillapp.com ~all |
| www CNAME | sen.dk (all on sen.dk) |
| www vs bare domain | Same network sen.dk: 144.217.88.214 2607:5300:205:200::7c0d (AS16276) www.sen.dk: 144.217.88.214 2607:5300:205:200::7c0d (AS16276) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 4/10 · 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 | 2026082501 |
| 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 | ONE.COM A/S |
| Registered | 2002-08-07 |
| Expires | 2030-01-31 (1194d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 16:02:22 | 1803ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-18 19:17:14 | 3126ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 06:45:11 | 1423ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 19:31:11 | 1063ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 02:54:08 | 2037ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 01:57:16 | 5269ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 00:55:50 | 1349ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 22:13:40 | 1262ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 20:52:29 | 1802ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-07 20:21:34 | 933ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 01:31:03 | 1465ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-02 02:02:42 | 1025ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 02:19:43 | 770ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 14:26:52 shown | 1176ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-25 17:37:28 | 1124ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 18:30:54 | 2000ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 19:07:34 | 811ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 03:37:59 | 667ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 17:36:52 | 2826ms | 2 NS 1 A 1 MX | 🔒 Secure |