sysid.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 29 July 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.241.121 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed but currently fails validation, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.241.121 | 3600s | webcluster2.wordpresspod2-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 77.111.241.121 |
| 🔶 Autoconfig | 77.111.241.121 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:104:80cb:4b31:6860:4480 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www CNAME | sysid.dk (all on sysid.dk) |
| www vs bare domain | Same network sysid.dk: 82.198.230.74 2a02:4780:3f:2332:0:2107:438c:2 (AS47583) www.sysid.dk: 82.198.230.74 2a02:4780:3f:2332:0:2107:438c:2 (AS47583) |
| Wildcard | No |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'sysid.dk/DS/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2026061502 |
| 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 | Realtime Register B.V. |
| Registered | 2023-07-29 |
| Expires | 2027-07-28 (282d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 23:11:44 | 1699ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-09 13:16:48 | 918ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-08 21:51:17 | 1218ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-01 20:31:26 | 2208ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-27 19:40:45 | 1233ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-24 10:00:22 | 1127ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-20 14:25:29 | 1771ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-11 17:34:29 | 1113ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-04 13:29:58 | 1273ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-27 12:04:01 | 793ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-26 11:42:59 | 1868ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-20 14:01:19 | 10158ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-13 22:06:06 | 3266ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-07 04:53:36 | 1457ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-23 12:42:51 | 865ms | 2 NS 1 A 2 MX | ❓ Unknown |
| 2026-07-16 17:20:36 | 1068ms | 2 NS 1 A 2 MX | ❓ Unknown |
| 2026-07-09 05:46:34 | 8983ms | 2 NS 1 A 2 MX | ❓ Unknown |
| 2026-07-05 21:39:27 | 3633ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-05 20:51:33 | 1009ms | 2 NS 1 A 2 MX | ❓ Unknown |
| 2026-07-03 00:35:45 | 9745ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 10:10:09 | 1735ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 20:22:53 | 2248ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 06:20:48 | 2017ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 05:55:48 shown | 711ms | 2 NS 1 A 4 MX | ⚠️ Bogus |
| 2026-06-20 09:19:34 | 586ms | 2 NS 1 A 4 MX | 🔒 Secure |