cst.dk is a .dk domain served by 2 nameservers (ns1.ku.dk, ns2.ku.dk). It was registered on 29 October 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.225.251.141 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by ku-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 130.225.251.141 | — | — | AS1835 | IDDQD-AS | 130.225.0.0/16 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| clojars simongray |
| MS=ms29711794 |
| v=spf1 mx include:spf.protection.outlook.com a:unicph-gw.ku.dk include:bulk.spf.ku.dk ip4:92.43.124.147 ip4:92.43.124.21 ~all |
| Policy | Record (cst.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx include:spf.protection.outlook.com a:unicph-gw.ku.dk include:bulk.spf.ku.dk ip4:92.43.124.147 ip4:92.43.124.21 ~all |
| Policy | Record (_dmarc.cst.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 | cst.dk (all on cst.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-cst-dk._domainkey.alumni.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-cst-dk._domainkey.alumni.onmicrosoft.com | RSA · ~1024 bit below 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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026061101 |
| Primary NS (MNAME) | ns1.ku.dk |
| Responsible (RNAME) | hostmaster@adm.ku.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 1996-10-29 |
| Expires | 2026-12-31 (75d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 17:26:24 | 2730ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 11:01:44 | 1670ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 08:26:56 | 1713ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 06:46:17 | 2796ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 05:21:41 | 2145ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 03:09:32 | 3630ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-21 14:58:27 | 1632ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-11 02:52:11 | 2585ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 22:58:04 | 1808ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 14:29:46 | 1082ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 08:35:26 | 1838ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-15 06:09:42 | 5824ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-10 08:11:34 | 2326ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-31 21:54:05 | 2704ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-23 05:53:43 | 17046ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-16 15:51:41 | 9436ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-09 05:34:50 | 1987ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-02 15:34:33 | 1905ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 18:28:02 | 2555ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 04:29:08 | 1684ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 23:05:51 shown | 780ms | 2 NS 1 A 1 MX | 🔓 Insecure |