ustc.dk

📜 Historical scan 2026-06-21 01:30:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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.

🖥️ Nameservers#

2 records 310ms

Nameserver	IP addresses	PTR	ASN / ISP
dns1.cscdns.net	156.154.130.100 2610:a1:1022::100	ns2.domainnetwork.se ns3.netnames.net	AS12008 Vercara, LLC AS12008 Vercara, LLC
dns2.cscdns.net	156.154.131.100 2610:a1:1023::100	ns3.euro909.com dns2.cscdns.net	AS12008 Vercara, LLC AS12008 Vercara, LLC

🌍 A Records#

2 records 266ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.159.140.98	3600s	—	AS13335	Cloudflare, Inc.	162.159.128.0/19	—	—
172.66.0.96	3600s	—	AS13335	Cloudflare, Inc.	172.66.0.0/22	—	—

📧 MX Records#

1 records 250ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	ustc-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::20 2a01:111:f403:ca09::6 2a01:111:f403:ca09::9 52.101.73.19 52.101.73.2 52.101.73.22 52.101.73.6	mail-db6pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am6pr04cu00306.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 502ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	0	5061	sipfed.online.lync.com

📝 TXT Records#

14 records 578ms

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

✉️ SPF#

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

📨 DMARC#

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

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 01:14:54

www CNAME	king-prawn-app-633ov.ondigitalocean.app (all on ondigitalocean.app) → 162.159.140.98 172.66.0.96 2606:4700:7::60 2a06:98c1:58::60 (AS13335)
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

✍️ DKIM keys#

3 found

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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 11/10 · policy: ~all

error 11 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

392ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

171ms

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

📋 Registration#

WHOIS fetched 2026-10-20 05:38:32

Field	Value
Registrar	CSC Digital Brand Service, Inc
Registered	1999-12-06
Expires	2026-12-31 (71d)

🔗 Same registrant#

24 domains

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).

Domain	Registrar
bhapplications.dk	CSC Digital Brand Service, Inc
centrigo.dk	Eurodns S.A
f-t.dk	CSC Digital Brand Service, Inc
franck-tobiesen.dk	CSC Digital Brand Service, Inc
gcosbackup.dk	Eurodns S.A
hosthouse.dk	CSC Digital Brand Service, Inc
it-craft.dk	CSC Digital Brand Service, Inc
itholding.dk	CSC Digital Brand Service, Inc
kc-host.dk	CSC Digital Brand Service, Inc
kcrr.dk	CSC Digital Brand Service, Inc
nonfederation-usermigration.dk	CSC Digital Brand Service, Inc
odinsbrygge.dk	CSC Digital Brand Service, Inc
outforce.dk	CSC Digital Brand Service, Inc
performancedoctor.dk	CSC Digital Brand Service, Inc
premiumleasing.dk	CSC Digital Brand Service, Inc
sdkgroup.dk	CSC Digital Brand Service, Inc
selectedcarcollection.dk	CSC Digital Brand Service, Inc
selfproperty.dk	CSC Digital Brand Service, Inc
sqlperformancedoctor.dk	CSC Digital Brand Service, Inc
teneo.dk	CSC Digital Brand Service, Inc
udemo.dk	CSC Digital Brand Service, Inc
unit-it.dk	CSC Digital Brand Service, Inc
unitcloud.dk	CSC Digital Brand Service, Inc
wingman-kultur.dk	CSC Digital Brand Service, Inc

📋 WHOIS#

⏱️ Lookup Timing#

310ms

266ms

250ms

AAAA

223ms

TXT

578ms

CAA

141ms

HTTPS

300ms

TLSA

322ms

SOA

171ms

MTA-STS

309ms

DNSSEC

392ms

SRV

502ms

Total

2552ms

🕐 Scan History#

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 shown	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	1011ms	2 NS 2 A 1 MX	🔓 Insecure