tristan-otto.dk is a .dk domain served by 2 nameservers (ns1.ku.dk, ns2.ku.dk). It was registered on 6 November 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.226.237.173 is hosted by FSKNET-DK Forskningsnettet - Danish network for Research and Education (AS1835) in Denmark. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 130.226.237.173 | 2293s | cmslb.adm.ku.dk | AS1835 | FSKNET-DK Forskningsnettet - Danish network for Research and Education | 130.226.0.0/16 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | cmsgw.adm.ku.dk → 130.226.237.173 |
| 🔶 Autoconfig | cmsgw.adm.ku.dk → 130.226.237.173 |
| Policy | Record (_dmarc.tristan-otto.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:upglztho@ag.eu.dmarcadvisor.com; ruf=mailto:upglztho@fr.eu.dmarcadvisor.com; pct=100; fo=1; ri=3600 |
| www CNAME | cmsgw.adm.ku.dk (all on ku.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.tristan-otto.dk | cmsgw.adm.ku.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026101501 |
| Primary NS (MNAME) | ns1.ku.dk |
| Responsible (RNAME) | hostmaster@adm.ku.dk |
| Refresh | 28800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2019-11-06 |
| Expires | 2026-11-30 (39d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 02:34:14 shown | 1281ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-11 19:32:44 | 3339ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-08 13:15:32 | 2236ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-08 11:17:59 | 4180ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-02 01:11:51 | 1068ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-01 01:02:42 | 2660ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-24 03:19:58 | 1519ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-18 06:55:38 | 1162ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-11 04:45:33 | 2589ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-06 14:57:00 | 2481ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-27 18:53:44 | 1278ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-27 13:41:25 | 1072ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-20 04:17:07 | 1933ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-13 16:06:31 | 5125ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-11 22:31:00 | 8900ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-09 06:46:26 | 1251ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-01 00:58:09 | 1316ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-23 04:03:38 | 968ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-17 14:09:01 | 1098ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-09 02:42:04 | 1335ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-03 12:05:59 | 2673ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-25 12:54:37 | 5292ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-19 04:06:57 | 928ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-18 07:39:44 | 868ms | 2 NS 1 A 0 MX | 🔓 Insecure |