matematik.dk

Records from scan: 2026-09-30 19:38:38 · 443ms total · last checked 2026-10-16 23:10 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

matematik.dk is a .dk domain served by 2 nameservers (cortney.ns.cloudflare.com, eric.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.78.87 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 42ms

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 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.78.87	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.219.16	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 35ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:db10	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4e57	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 43ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.78.87,172.67.219.16 ech=AEX+DQBBNwAgACANG785NbYxf2vAoHiUugO7PDLchnWNz2f+95epg2DJewAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:db10,2606:4700:3035::6815:4e57

📝 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 2026-10-10 16:22:33

www	104.21.78.87 172.67.219.16 2606:4700:3034::ac43:db10 2606:4700:3035::6815:4e57 (AS13335) (address records, no CNAME)
www vs bare domain	Same network matematik.dk: 104.21.78.87 172.67.219.16 2606:4700:3034::ac43:db10 2606:4700:3035::6815:4e57 (AS13335) www.matematik.dk: 104.21.78.87 172.67.219.16 2606:4700:3034::ac43:db10 2606:4700:3035::6815:4e57 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

63ms

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

🏷️ SOA#

46ms

Field	Value
Serial	2416106939
Primary NS (MNAME)	cortney.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#

42ms

30ms

38ms

AAAA

35ms

TXT

181ms

CAA

49ms

HTTPS

43ms

TLSA

47ms

SOA

46ms

MTA-STS

62ms

DNSSEC

63ms

SRV

71ms

Total

443ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 19:38:38 shown	443ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-28 23:33:56	603ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 22:14:15	501ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-20 11:54:38	1190ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-12 05:19:11	727ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-25 22:51:56	585ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-02 20:49:01	890ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-22 05:39:49	16779ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-18 02:34:29	16867ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-16 18:39:08	925ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-17 22:17:09	729ms	2 NS 2 A 0 MX	🔓 Insecure