knowledge.dk DNS records

🖥️ Nameservers2 records 57ms

Nameserver	IP addresses	PTR	ASN / ISP
mary.ns.cloudflare.com	108.162.192.134 172.64.32.134 173.245.58.134 2606:4700:50::adf5:3a86 2803:f800:50::6ca2:c086 2a06:98c1:50::ac40:2086	mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
seth.ns.cloudflare.com	108.162.193.142 172.64.33.142 173.245.59.142 2606:4700:58::adf5:3b8e 2803:f800:50::6ca2:c18e 2a06:98c1:50::ac40:218e	seth.ns.cloudflare.com seth.ns.cloudflare.com seth.ns.cloudflare.com seth.ns.cloudflare.com seth.ns.cloudflare.com seth.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.61.230	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.216.11	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	nicolaj.com → 104.21.5.33
🔶 Autoconfig	nicolaj.com → 172.67.132.220

🔷 AAAA Records (IPv6)2 records 59ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:3de6	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d80b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 74ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.61.230,172.67.216.11 ech=AEX+DQBBwQAgACCJq/98h4XBibtJpMwP+KRke6TgId8VdS0G6GYygQlfVQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3de6,2606:4700:3035::ac43:d80b

📝 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.knowledge.dk	nicolaj.com

🔗 TLSA / DANE

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

🔐 DNSSEC103ms

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	2411144198
Primary NS (MNAME)	mary.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

57ms

A

51ms

MX

70ms

AAAA

59ms

TXT

233ms

CAA

45ms

HTTPS

74ms

TLSA

184ms

SOA

0ms

MTA-STS

81ms

DNSSEC

103ms

SRV

78ms

Total

1126ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 10:10:24	749ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-27 01:33:05	1126ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-03 19:00:24	25366ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-12 12:20:42	1113ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-21 22:16:34	1210ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-20 22:25:10	1159ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 18:28:04	753ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-20 01:07:52	879ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-19 19:19:44	748ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-18 07:46:32	1085ms	2 NS 2 A 0 MX	⚠️ Bogus	View