cis-edu.dk

📜 Historical scan 2026-08-17 13:39:18 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cis-edu.dk is a .dk domain served by 2 nameservers (alexandra.ns.cloudflare.com, venkat.ns.cloudflare.com). It was registered on 24 June 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.51.65 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 54ms

Nameserver	IP addresses	PTR	ASN / ISP
alexandra.ns.cloudflare.com	108.162.194.30 162.159.38.30 172.64.34.30 2606:4700:50::a29f:261e 2803:f800:50::6ca2:c21e 2a06:98c1:50::ac40:221e	alexandra.ns.cloudflare.com alexandra.ns.cloudflare.com alexandra.ns.cloudflare.com alexandra.ns.cloudflare.com alexandra.ns.cloudflare.com alexandra.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
venkat.ns.cloudflare.com	108.162.195.254 162.159.44.254 172.64.35.254 2606:4700:58::a29f:2cfe 2803:f800:50::6ca2:c3fe 2a06:98c1:50::ac40:23fe	venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com venkat.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.51.65	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.223.152	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 53ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:df98	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:3341	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 42ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.51.65,172.67.223.152 ech=AEX+DQBBjgAgACAGd+wmoXQPMjzXpkwY+ze8vrvyh3X6bHrF0BXN0GD2OwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:df98,2606:4700:3037::6815:3341

📝 TXT Records#

2 records 196ms

TXT Record
google-site-verification=2OzguH4ink507x5oCQb5c-YBqHH7X8IVpCCpZb1VBfo
google-site-verification=rF7sB3_e5Aj5Z8L2tYE_0UfXXwNJq6lMAbCuyjZG4pM

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-15 15:16:14

www	104.21.51.65 172.67.223.152 2606:4700:3032::ac43:df98 2606:4700:3037::6815:3341 (AS13335) (address records, no CNAME)
www vs bare domain	Same network cis-edu.dk: 104.21.51.65 172.67.223.152 2606:4700:3032::ac43:df98 2606:4700:3037::6815:3341 (AS13335) www.cis-edu.dk: 104.21.51.65 172.67.223.152 2606:4700:3032::ac43:df98 2606:4700:3037::6815:3341 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

96ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2412392720
Primary NS (MNAME)	alexandra.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 14:02:37

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-06-24
Expires	2027-04-30 (193d)

📋 WHOIS#

⏱️ Lookup Timing#

54ms

42ms

49ms

AAAA

53ms

TXT

196ms

CAA

56ms

HTTPS

42ms

TLSA

54ms

SOA

0ms

MTA-STS

76ms

DNSSEC

96ms

SRV

72ms

Total

863ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 15:16:14	2944ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-02 05:01:26	705ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-30 04:34:27	800ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-29 04:12:05	1188ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-26 02:54:21	761ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-25 02:44:07	622ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-12 19:47:36	1005ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-26 20:44:18	487ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-25 00:46:45	2570ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-18 21:14:02	5410ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-17 13:39:18 shown	863ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-27 19:29:23	1062ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-16 14:26:22	954ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-20 07:34:27	479ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 20:55:10	421ms	2 NS 2 A 0 MX	🔓 Insecure