koldcollege.dk

📜 Historical scan 2026-10-07 15:04:27 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

koldcollege.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 19 September 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.19.250.219 is hosted by OVH SAS (AS16276) in France. Mail is handled by koldcollege-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 42ms

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#

4 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.19.250.219	300s	edge1.netkant.eu	AS16276	OVH SAS	162.19.0.0/16	🇫🇷 France	—
167.235.70.19	300s	edge3.netkant.eu	AS24940	Hetzner Online GmbH	167.235.0.0/16	🇩🇪 Germany	Nuremberg
185.216.75.46	300s	edge2.netkant.eu	AS51167	Contabo GmbH	185.216.75.0/24	🇫🇷 France	Lauterbourg
81.24.7.102	300s	—	AS25151	Cyso Group B.V.	81.24.0.0/21	🇳🇱 The Netherlands	—

📧 MX Records#

1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	koldcollege-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::26 2a01:111:f403:ca09::a 2a01:111:f403:ca48::10 52.101.68.10 52.101.68.12 52.101.68.27 52.101.73.145	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 74ms

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

📝 TXT Records#

6 records 180ms

TXT Record
cGb4pRf3/OJ3i8r0cmLUzPi7iGJvnCz4PCvl2TpH+1F8hgyCG3RIWNVVyguphuSu1HAitaftm5a2qK/Qcs8JcQ==
facebook-domain-verification=d8e8kbi1857m3ba2ptrhud20tbne8f
google-site-verification=HmJ1SW9__UGybbwyZ3ArKtKBrbPcRu83TBquffWQZXo
Kold College
MS=ms29093526
v=spf1 a mx include:spf.protection.outlook.com include:_spf2.efif.dk include:mailmailmail.net include:emsd1.com ip4:40.68.78.49 -all

✉️ SPF#

Policy	Record (koldcollege.dk)
-all (hard fail)	v=spf1 a mx include:spf.protection.outlook.com include:_spf2.efif.dk include:mailmailmail.net include:emsd1.com ip4:40.68.78.49 -all

📨 DMARC#

Policy	Record (_dmarc.koldcollege.dk)
p=reject	v=DMARC1; p=reject; pct=100; ruf=mailto:analyze@koldcollege.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 2026-10-15 04:01:49

www CNAME	edge.netkant.eu (all on netkant.eu) → 162.19.250.219 51.38.38.70 51.68.137.74 (AS16276)
www vs bare domain	Same network koldcollege.dk: 162.19.250.219 167.235.70.19 185.216.75.46 81.24.7.102 (AS16276 AS24940 AS25151 AS51167) www.koldcollege.dk: 162.19.250.219 51.38.38.70 51.68.137.74 (AS16276)
Wildcard	No
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-koldcollege-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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

109ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2012063008
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 2026-10-10 20:52:47

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-09-19
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

34ms

53ms

AAAA

41ms

TXT

180ms

CAA

39ms

HTTPS

35ms

TLSA

743ms

SOA

45ms

MTA-STS

68ms

DNSSEC

109ms

SRV

74ms

Total

1487ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 04:01:49	1441ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-14 03:08:32	1210ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-10 20:09:17	1447ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-09 16:40:52	1448ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-08 15:55:07	4373ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-07 15:04:27 shown	1487ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-03 11:15:09	1394ms	3 NS 4 A 1 MX	🔒 Secure
2026-10-02 11:14:48	1705ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-30 11:11:20	1054ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-28 17:25:29	2148ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-27 17:19:11	2338ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-23 16:11:38	2527ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-20 03:33:27	2031ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-13 02:13:01	3504ms	3 NS 4 A 1 MX	🔒 Secure
2026-09-06 18:26:40	5270ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-30 16:56:28	2249ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-29 05:05:12	1462ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-27 18:02:33	2420ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-24 23:05:41	3663ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-21 18:13:25	4101ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-19 17:29:11	7597ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-17 10:28:42	7207ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-12 18:57:30	6141ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-11 01:42:07	7752ms	3 NS 4 A 1 MX	🔒 Secure
2026-08-07 18:36:36	2745ms	3 NS 4 A 1 MX	🔒 Secure