matematik.dk

📜 Historical scan 2026-06-17 22:17:09 · ← Latest scan

⬇ 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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 59ms

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 49ms

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

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:db10	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::6815:4e57	—	—	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+DQBBnAAgACBeRsiogButg1cXG+B47GvAtSqi3Ug1C0cFugeMjxDaMwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:db10,2606:4700:3033::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#

latest probe, not this scan · 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#

75ms

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

🏷️ SOA#

37ms

Field	Value
Serial	2405882164
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#

59ms

49ms

64ms

AAAA

49ms

TXT

169ms

CAA

34ms

HTTPS

43ms

TLSA

100ms

SOA

37ms

MTA-STS

56ms

DNSSEC

75ms

SRV

77ms

Total

729ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 19:38:38	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 shown	729ms	2 NS 2 A 0 MX	🔓 Insecure