caltech.dk

📜 Historical scan 2026-09-13 19:35:03 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

caltech.dk is a .dk domain served by 2 nameservers (ns1.loopia.se, ns2.loopia.se). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.189.41.129 is hosted by Hostek AB (AS29024) in Sweden. Mail is handled by caltech-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 159ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.loopia.se	2a02:250:ffff::20 93.188.0.20	ns1.loopia.se ns1.loopia.se	AS39570 Loopia AB AS39570 Loopia AB
ns2.loopia.se	185.71.156.20 2a02:250:fffe::20	ns2.loopia.se ns2.loopia.se	AS215836 Loopia AB AS215836 Loopia AB

🌍 A Records#

1 records 117ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.189.41.129	3600s	webframe.ballou.se	AS29024	Hostek AB	91.189.40.0/21	🇸🇪 Sweden	—

📧 MX Records#

1 records 112ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	300s	caltech-dk.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::a 2a01:111:f403:ca04::e 2a01:111:f403:ca04::f 52.101.68.27 52.101.73.153 52.101.91.156 52.101.91.159	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-maspr04cu00104.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 → 52.97.189.104
🔶 Autoconfig	91.189.41.129

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 684ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:mailgun.org include:send.heyloyalty.com include:spf.bedrock.lime-technologies.com -all

✉️ SPF#

Policy	Record (caltech.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:mailgun.org include:send.heyloyalty.com include:spf.bedrock.lime-technologies.com -all

📨 DMARC#

Policy	Record (_dmarc.caltech.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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 04:26:02

www CNAME	webframe.ballou.se (all on ballou.se) → 91.189.41.129 (AS29024)
www vs bare domain	Same network caltech.dk: 91.189.41.129 (AS29024) www.caltech.dk: 91.189.41.129 (AS29024)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: -all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

233ms

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

🏷️ SOA#

0ms

Field	Value
Serial	1788998400
Primary NS (MNAME)	ns1.loopia.se
Responsible (RNAME)	registry@loopia.se
Refresh	14400s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

159ms

117ms

112ms

AAAA

154ms

TXT

684ms

CAA

119ms

HTTPS

102ms

TLSA

373ms

SOA

0ms

MTA-STS

165ms

DNSSEC

233ms

SRV

518ms

Total

1685ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 04:26:02	1562ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-08 12:10:41	3337ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-01 09:33:41	2575ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-30 09:32:08	734ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 05:22:30	1433ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-22 02:04:41	938ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-13 19:35:03 shown	1685ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-06 17:34:34	1629ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 14:20:58	1566ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-20 12:09:02	11052ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-13 19:07:57	1988ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-10 12:38:59	4700ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-05 19:46:33	1710ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-23 12:42:52	2242ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-16 18:53:49	1675ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-09 18:40:05	8977ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-03 11:47:38	1786ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-27 04:38:07	1471ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-23 19:42:39	849ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-21 09:12:29	958ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 18:55:14	764ms	2 NS 1 A 1 MX	🔓 Insecure