formatmatematik.dk

📜 Historical scan 2026-09-17 20:02:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

formatmatematik.dk is a .dk domain served by 2 nameservers (cortney.ns.cloudflare.com, eric.ns.cloudflare.com). It was registered on 27 May 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.66.200 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx01.dandomain.dk. 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 142ms

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 126ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.66.200	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.207.59	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 142ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx01.dandomain.dk	212.237.249.50	mx1.dandomain.dk	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

2 records 112ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:42c8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:cf3b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 112ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.66.200,172.67.207.59 ech=AEX+DQBBgQAgACB/vkszTYxXL86+RZlR6vV7bzlPhhnbHJdoYUDgKRXyTAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:42c8,2606:4700:3034::ac43:cf3b

📝 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 2026-10-11 10:53:37

www	104.21.66.200 172.67.207.59 2606:4700:3031::6815:42c8 2606:4700:3034::ac43:cf3b (AS13335) (address records, no CNAME)
www vs bare domain	Same network formatmatematik.dk: 104.21.66.200 172.67.207.59 2606:4700:3031::6815:42c8 2606:4700:3034::ac43:cf3b (AS13335) www.formatmatematik.dk: 104.21.66.200 172.67.207.59 2606:4700:3031::6815:42c8 2606:4700:3034::ac43:cf3b (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

207ms

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	2414816248
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 2026-10-09 01:57:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2014-05-27
Expires	2027-05-31 (225d)

📋 WHOIS#

⏱️ Lookup Timing#

142ms

126ms

142ms

AAAA

112ms

TXT

486ms

CAA

124ms

HTTPS

112ms

TLSA

79ms

SOA

0ms

MTA-STS

123ms

DNSSEC

207ms

SRV

189ms

Total

1017ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 04:30:59	558ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 09:01:51	697ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 08:29:00	744ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-17 20:02:20 shown	1017ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-10 18:07:10	1922ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-10 18:03:09	985ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-23 10:44:23	1164ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 03:57:11	1884ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-01 07:50:23	627ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 04:55:49	685ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 20:31:50	826ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 03:16:49	3836ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 21:59:15	967ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 17:47:42	845ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 21:34:19	1583ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 12:19:41	674ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 10:09:32	2029ms	2 NS 2 A 1 MX	🔓 Insecure