cerix-institute.dk

Records from scan: 2026-09-26 07:21:34 · 561ms total · last checked 2026-10-21 18:16 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cerix-institute.dk is a .dk domain served by 2 nameservers (pola.ns.cloudflare.com, yichun.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.96.42 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 30ms

Nameserver	IP addresses	PTR	ASN / ISP
pola.ns.cloudflare.com	108.162.192.214 172.64.32.214 173.245.58.214 2606:4700:50::adf5:3ad6 2803:f800:50::6ca2:c0d6 2a06:98c1:50::ac40:20d6	pola.ns.cloudflare.com pola.ns.cloudflare.com pola.ns.cloudflare.com pola.ns.cloudflare.com pola.ns.cloudflare.com pola.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
yichun.ns.cloudflare.com	108.162.193.248 172.64.33.248 173.245.59.248 2606:4700:58::adf5:3bf8 2803:f800:50::6ca2:c1f8 2a06:98c1:50::ac40:21f8	yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.96.42	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.172.253	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:acfd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:602a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.96.42,172.67.172.253 ech=AEX+DQBBeQAgACAykazgbx2ToCbOH7QyPqkm9ZPq4mQCL0ehy8X5cq88NQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:acfd,2606:4700:3036::6815:602a

📝 TXT Records#

1 records 170ms

TXT Record
google-site-verification=-ejyEBDX_JJc6f2Dfz7_0LIrDXxbSFZM6yIdkfQc22E

✉️ 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#

checked 2026-10-08 14:45:15

www	104.21.96.42 172.67.172.253 2606:4700:3034::ac43:acfd 2606:4700:3036::6815:602a (AS13335) (address records, no CNAME)
www vs bare domain	Same network cerix-institute.dk: 104.21.96.42 172.67.172.253 2606:4700:3034::ac43:acfd 2606:4700:3036::6815:602a (AS13335) www.cerix-institute.dk: 104.21.96.42 172.67.172.253 2606:4700:3034::ac43:acfd 2606:4700:3036::6815:602a (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

74ms

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	2415122425
Primary NS (MNAME)	pola.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

30ms

32ms

35ms

AAAA

43ms

TXT

170ms

CAA

36ms

HTTPS

39ms

TLSA

48ms

SOA

0ms

MTA-STS

62ms

DNSSEC

74ms

SRV

55ms

Total

561ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 07:21:34 shown	561ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-23 15:48:16	1353ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-16 08:39:29	1960ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-09 06:12:49	1233ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-04 16:18:52	1661ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-26 18:04:48	529ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-14 22:08:30	1030ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-02 00:50:27	856ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 20:10:23	444ms	2 NS 2 A 0 MX	🔓 Insecure