college360.dk

📜 Historical scan 2026-10-09 21:00:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

college360.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 24 April 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.251.4.118 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by college360-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

3 records 44ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.efif.dk	195.254.168.23	ns.efif.dk	AS51073 Aarhus Business College
ns2.efif.dk	195.254.168.12	ns2.efif.dk	AS51073 Aarhus Business College
ns3.efif.dk	20.23.170.35	—	AS8075 Microsoft Corporation

🌍 A Records#

1 records 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.251.4.118	300s	vm0845.enterprisecloud.nu	AS48854	team.blue Denmark A/S	178.251.0.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	college360-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca04::e 2a01:111:f403:ca09::26 2a01:111:f403:ca48::e 52.101.103.36 52.101.73.120 52.101.91.153 52.101.91.159	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com mail-matpr04cu00207.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 → 52.98.154.136
🔶 Autoconfig	178.251.4.118

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 102ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

3 records 197ms

TXT Record
bqut4q8bg25ja715kbmnko71dd
MS=ms28050298
v=spf1 include:spf.protection.outlook.com include:_spf2.efif.dk include:spf.mcb.dk include:sendgrid.net ip4:195.74.34.66 ip4:193.201.39.122 -all

✉️ SPF#

Policy	Record (college360.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf2.efif.dk include:spf.mcb.dk include:sendgrid.net ip4:195.74.34.66 ip4:193.201.39.122 -all

📨 DMARC#

Policy	Record (_dmarc.college360.dk)
p=reject	v=DMARC1; p=reject; pct=100; ruf=mailto:analyze@college360.dk; rua=mailto:64e88d13a948b@dmarc.centerasecurity.com

📬 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 2026-10-21 11:15:39

www	178.251.4.118 (AS48854) (address records, no CNAME)
www vs bare domain	Same network college360.dk: 178.251.4.118 (AS48854) www.college360.dk: 178.251.4.118 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector2	selector2-college360-dk._domainkey.efif.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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

65ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

42ms

Field	Value
Serial	2016011619
Primary NS (MNAME)	ns.efif.dk
Responsible (RNAME)	dns-zc@efif.dk
Refresh	14400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-21 11:26:04

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-04-24
Expires	2027-04-30 (190d)

🔗 Same registrant#

13 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
c360.dk	Punktum dk A/S (direct)
handelsskolen-silkeborg.dk	Punktum dk A/S (direct)
handelsskolensilkeborg.dk	Punktum dk A/S (direct)
hssilke.dk	Punktum dk A/S (direct)
hssilkeborg.dk	Punktum dk A/S (direct)
hsskyen.dk	Punktum dk A/S (direct)
kursuscenteret.dk	Punktum dk A/S (direct)
learnsilkeborg.dk	Punktum dk A/S (direct)
piu-sekretariatet.dk	Punktum dk A/S (direct)
piu.dk	Punktum dk A/S (direct)
silkeborg-handelsskole.dk	Punktum dk A/S (direct)
silkeborghs.dk	Punktum dk A/S (direct)
silkehs.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

53ms

32ms

AAAA

43ms

TXT

197ms

CAA

54ms

HTTPS

32ms

TLSA

866ms

SOA

42ms

MTA-STS

62ms

DNSSEC

65ms

SRV

102ms

Total

1356ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 11:15:39	744ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-20 06:05:21	2437ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-19 05:28:35	4464ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-18 04:15:49	3420ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-17 04:10:02	1567ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-16 03:58:53	3431ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-14 02:19:45	1224ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-13 01:50:31	4089ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-11 23:55:46	1684ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-10 22:08:32	1169ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-09 21:00:04 shown	1356ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-08 11:33:05	1715ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-07 11:22:32	2784ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-05 07:03:21	1161ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-03 06:40:20	3108ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-02 06:35:58	3440ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-01 06:32:05	4132ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-30 06:23:53	1577ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-29 06:14:17	18123ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 05:31:38	18066ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-25 04:54:23	1136ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 04:20:39	18516ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-22 17:13:58	18093ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-19 06:16:13	6893ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-14 23:03:51	9558ms	3 NS 1 A 1 MX	🔒 Secure