matematikunivers.dk

Records from scan: 2026-10-05 14:54:09 · 1624ms total · last checked 2026-10-17 12:04 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

matematikunivers.dk is a .dk domain served by 2 nameservers (cortney.ns.cloudflare.com, eric.ns.cloudflare.com). It was registered on 2 September 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.89.125 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 108ms

Nameserver	IP addresses	PTR	ASN / ISP
cortney.ns.cloudflare.com	108.162.192.87 172.64.32.87 173.245.58.87 2606:4700:50::adf5:3a57 2803:f800:50::6ca2:c057 2a06:98c1:50::ac40:2057	cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
eric.ns.cloudflare.com	108.162.193.112 172.64.33.112 173.245.59.112 2606:4700:58::adf5:3b70 2803:f800:50::6ca2:c170 2a06:98c1:50::ac40:2170	eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com eric.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 112ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.89.125	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.159.85	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 101ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:597d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:9f55	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 110ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.89.125,172.67.159.85 ech=AEX+DQBBEQAgACDvShwVB+5Rm7cOoucaSXa34LiwgyGDEdAVRnnl/ILREAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:597d,2606:4700:3033::ac43:9f55

📝 TXT Records#

📝

No TXT records found

✉️ 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 19:36:32

www	104.21.89.125 172.67.159.85 2606:4700:3031::6815:597d 2606:4700:3033::ac43:9f55 (AS13335) (address records, no CNAME)
www vs bare domain	Same network matematikunivers.dk: 104.21.89.125 172.67.159.85 2606:4700:3031::6815:597d 2606:4700:3033::ac43:9f55 (AS13335) www.matematikunivers.dk: 104.21.89.125 172.67.159.85 2606:4700:3031::6815:597d 2606:4700:3033::ac43:9f55 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

200ms

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

🏷️ SOA#

69ms

Field	Value
Serial	2416662121
Primary NS (MNAME)	cortney.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 15:08:53

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2004-09-02
Expires	2027-09-30 (347d)

📋 WHOIS#

⏱️ Lookup Timing#

108ms

112ms

101ms

AAAA

101ms

TXT

282ms

CAA

129ms

HTTPS

110ms

TLSA

746ms

SOA

69ms

MTA-STS

123ms

DNSSEC

200ms

SRV

137ms

Total

1624ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 14:54:09 shown	1624ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-30 14:25:04	454ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-26 04:34:17	480ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-22 01:50:54	745ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-02 22:45:09	9524ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-07 14:08:40	1066ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-27 15:47:10	25377ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-21 02:59:45	850ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-20 17:09:44	816ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-17 12:14:47	1372ms	2 NS 2 A 0 MX	🔓 Insecure