ustc.dk is a .dk domain served by 2 nameservers (dns1.cscdns.net, dns2.cscdns.net). It was registered on 6 December 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.159.140.98 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by ustc-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 |
|---|---|---|---|---|---|---|---|
| 162.159.140.98 | — | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | — | — |
| 172.66.0.96 | — | — | AS13335 | Cloudflare, Inc. | 172.66.0.0/22 | — | — |
| TXT Record |
|---|
| 8Rj6zA+kbi6YJaOqJEVkes2OTo3esXtZsfIov/ZKgDo= |
| adobe-idp-site-verification=edd12c984ce6b53ae147023c8ecfdf80c599378201871316ad7959887ad75d59 |
| apple-domain-verification=DOQAstql1LV99kTV |
| CEOV1607253747_ 12swBF |
| globalsign-domain-verification=cvE1o8ImayTB7LRnSnsdKPT8eRHN5_VOne97C0U_tB |
| google-site-verification=PnzGTsvWyrWZxZSeSc4a4sPrAdHLwknbaDsaNPXZxXc |
| IPwfnaOevpMA0FP8kqafl+n2492e9KPjAbA0rxL3mro= |
| jdbozzrqDWMa/X3I8MwqYkfdvzAYSYdhsx9iDTmIO5E= |
| knowbe4-site-verification=19ecbcfcb9e46a23beec6adde2f8d3b6 |
| MS=ms26011496 |
| MS=ms26935357 |
| qohYonaJ9urGj7o8AIhAGZeZJXYbz0D1HkothJ9KsCQ= |
| QTPcAa86rwgMYxvsiJxaMMZBHcg5bMqYHzvk2lyQlKC75f/iBUhVviz8imtBxFXlcRWN2Nt6HIO7h3qbxBF4jg== |
| v=spf1 include:spf.protection.outlook.com ip4:87.54.30.26 mx:ofithost.dk a:ustc.dk include:spf.unit-it.dk include:sendgrid.net include:mailgun.org ~all |
| Policy | Record (ustc.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com ip4:87.54.30.26 mx:ofithost.dk a:ustc.dk include:spf.unit-it.dk include:sendgrid.net include:mailgun.org ~all |
| Policy | Record (_dmarc.ustc.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@14kt1cdr.uriports.com; ruf=mailto:dmarc@14kt1cdr.uriports.com; fo=1 |
| www CNAME | king-prawn-app-633ov.ondigitalocean.app (all on ondigitalocean.app) |
| www vs bare domain | Same network ustc.dk: 162.159.140.98 172.66.0.96 (AS13335) www.ustc.dk: 162.159.140.98 172.66.0.96 2606:4700:7::60 2a06:98c1:58::60 (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u15441642.wl143.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u15441642.wl143.sendgrid.net | RSA · ~2048 bit |
| selector1 | selector1-ustc-dk._domainkey.ustchost.onmicrosoft.com | 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: 11/10 · policy: ~all
| 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 | 2018082044 |
| Primary NS (MNAME) | dns1.cscdns.net |
| Responsible (RNAME) | hostmaster@cscdns.net |
| Refresh | 10800s |
| Retry | 1800s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 21600s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 1999-12-06 |
| Expires | 2026-12-31 (71d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 21:39:23 | 989ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-27 18:27:45 | 825ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 01:30:33 | 2552ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 20:05:42 | 1555ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 02:12:11 | 4836ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 11:45:06 shown | 1011ms | 2 NS 2 A 1 MX | 🔓 Insecure |