stu.dk

📜 Historical scan 2026-10-09 10:14:37 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

stu.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 16 August 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 141.193.213.10 is hosted by Cloudflare London, LLC (AS209242) in United States. Mail is handled by stu-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no 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#

3 records 29ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

2 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
141.193.213.10	3600s	—	AS209242	Cloudflare London, LLC	141.193.213.0/24	🇺🇸 United States	—
141.193.213.11	3600s	—	AS209242	Cloudflare London, LLC	141.193.213.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	stu-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::e 2a01:111:f403:ca04::f 2a01:111:f403:ca48::10 52.101.103.137 52.101.103.39 52.101.185.21 52.101.209.31	mail-du0pr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-cpjpr05cu00207.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 115ms

TXT Record
google-site-verification=uzqn7ZLBiDTypEWL5nu71DPvI_AfIK0bX7coLUvehwE
MS=ms82223296
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (stu.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-12 17:22:09

www	141.193.213.10 141.193.213.11 (AS209242) (address records, no CNAME)
www vs bare domain	Same network stu.dk: 141.193.213.10 141.193.213.11 (AS209242) www.stu.dk: 141.193.213.10 141.193.213.11 (AS209242)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

81ms

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

🏷️ SOA#

41ms

Field	Value
Serial	2026100200
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-12 17:32:27

Field	Value
Registrar	Simply.com A/S
Registered	2010-08-16
Expires	2027-08-31 (313d)

🔗 Same registrant#

6 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
6ugerskurserforledige.dk	Simply.com A/S
6ugerskursusforledige.dk	Simply.com A/S
bybuskgruppen.dk	Simply.com A/S
doorstep.dk	Simply.com A/S
jobrettet-uddannelse.dk	Simply.com A/S
matthias-larsen.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

29ms

30ms

39ms

AAAA

31ms

TXT

115ms

CAA

25ms

HTTPS

27ms

TLSA

588ms

SOA

41ms

MTA-STS

46ms

DNSSEC

81ms

SRV

46ms

Total

1023ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 17:22:09	1456ms	3 NS 2 A 1 MX	🔓 Insecure
2026-10-09 10:14:37 shown	1023ms	3 NS 2 A 1 MX	🔓 Insecure
2026-10-03 08:48:12	1086ms	3 NS 2 A 1 MX	🔓 Insecure
2026-08-27 12:39:56	909ms	3 NS 2 A 1 MX	🔓 Insecure
2026-06-28 10:17:55	794ms	3 NS 2 A 1 MX	🔓 Insecure
2026-06-17 13:23:32	3330ms	3 NS 2 A 1 MX	🔓 Insecure