f4j.dk DNS records

🖥️ Nameservers2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
linda.ns.cloudflare.com	108.162.192.250 172.64.32.250 173.245.58.250 2606:4700:50::adf5:3afa 2803:f800:50::6ca2:c0fa 2a06:98c1:50::ac40:20fa	linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mario.ns.cloudflare.com	108.162.193.203 172.64.33.203 173.245.59.203 2606:4700:58::adf5:3bcb 2803:f800:50::6ca2:c1cb 2a06:98c1:50::ac40:21cb	mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.93.10	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.201.223	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 55ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:c9df	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:5d0a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 36ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.93.10,172.67.201.223 ech=AEX+DQBBbwAgACCcSqCCymWbpZSh2MukAi6EK9cGHbJNtMgI/KWdWVcZYAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:c9df,2606:4700:3037::6815:5d0a

📝 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)

🔐 DNSSEC121ms

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	2412472284
Primary NS (MNAME)	linda.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

46ms

A

31ms

MX

42ms

AAAA

55ms

TXT

192ms

CAA

45ms

HTTPS

36ms

TLSA

51ms

SOA

0ms

MTA-STS

79ms

DNSSEC

121ms

SRV

98ms

Total

533ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 04:58:40	533ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-19 06:45:27	2754ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-17 03:45:32	877ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-26 14:42:37	880ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-03 02:02:09	1256ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-24 21:22:22	570ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-24 06:51:00	1173ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 15:37:14	644ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-23 02:24:13	1178ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-22 19:26:34	651ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-21 13:35:08	1193ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 09:10:27	1100ms	2 NS 2 A 0 MX	🔓 Insecure	View