internetsudoku.dk DNS records

🖥️ Nameservers2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
dan.ns.cloudflare.com	108.162.193.108 172.64.33.108 173.245.59.108 2606:4700:58::adf5:3b6c 2803:f800:50::6ca2:c16c 2a06:98c1:50::ac40:216c	dan.ns.cloudflare.com dan.ns.cloudflare.com dan.ns.cloudflare.com dan.ns.cloudflare.com dan.ns.cloudflare.com dan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
grace.ns.cloudflare.com	108.162.192.159 172.64.32.159 173.245.58.159 2606:4700:50::adf5:3a9f 2803:f800:50::6ca2:c09f 2a06:98c1:50::ac40:209f	grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.9.87	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.189.50	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.9.87
🔶 Autoconfig	104.21.9.87

🔷 AAAA Records (IPv6)2 records 53ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:957	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:bd32	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 54ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.9.87,172.67.189.50 ech=AEX+DQBB1wAgACBO6/jrXP1aBhaf2Ru3Gu/fnISM/miZlyHnAVovwfhNIQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:957,2606:4700:3035::ac43:bd32

📝 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

🔗 TLSA / DANE

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

🔐 DNSSEC84ms

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

🏷️ SOA0ms

Field	Value
Serial	2410662239
Primary NS (MNAME)	dan.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

39ms

A

37ms

MX

40ms

AAAA

53ms

TXT

216ms

CAA

54ms

HTTPS

54ms

TLSA

65ms

SOA

0ms

MTA-STS

71ms

DNSSEC

84ms

SRV

79ms

Total

1217ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 13:17:57	1217ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-28 03:27:32	624ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-28 01:07:37	1711ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-23 21:02:59	8812ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-07-17 05:39:56	8748ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-07-15 03:57:40	881ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-07-02 11:17:03	9684ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-06-25 17:30:51	867ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-06-24 14:58:03	3065ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-06-20 07:23:17	757ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-06-19 09:17:10	2472ms	2 NS 1 A 0 MX	🔓 Insecure	View
2026-06-17 17:42:14	1201ms	2 NS 1 A 0 MX	🔓 Insecure	View