fstudie.dk DNS records

🖥️ Nameservers2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
david.ns.cloudflare.com	108.162.193.152 172.64.33.152 173.245.59.152 2606:4700:58::adf5:3b98 2803:f800:50::6ca2:c198 2a06:98c1:50::ac40:2198	david.ns.cloudflare.com david.ns.cloudflare.com david.ns.cloudflare.com david.ns.cloudflare.com david.ns.cloudflare.com david.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
iris.ns.cloudflare.com	108.162.192.118 172.64.32.118 173.245.58.118 2606:4700:50::adf5:3a76 2803:f800:50::6ca2:c076 2a06:98c1:50::ac40:2076	iris.ns.cloudflare.com iris.ns.cloudflare.com iris.ns.cloudflare.com iris.ns.cloudflare.com iris.ns.cloudflare.com iris.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records4 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.185.159.144	60s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	New York
198.185.159.145	60s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	—
198.49.23.144	60s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—
198.49.23.145	60s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—

📧 MX Records1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
15	60s	mail.fstudie.dk	216.70.64.12	ip-216-70-64-12.ip.secureserver.net	—

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 210ms

TXT Record
mt-30298419

✉️ 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)

🔐 DNSSEC82ms

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	2412669837
Primary NS (MNAME)	david.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

48ms

A

50ms

MX

45ms

AAAA

44ms

TXT

210ms

CAA

49ms

HTTPS

59ms

TLSA

147ms

SOA

0ms

MTA-STS

68ms

DNSSEC

82ms

SRV

70ms

Total

790ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 03:37:45	790ms	2 NS 4 A 1 MX	🔓 Insecure	View
2026-08-24 23:17:17	758ms	2 NS 4 A 1 MX	🔓 Insecure	View
2026-08-20 14:38:17	6623ms	2 NS 4 A 1 MX	🔓 Insecure	View
2026-08-03 18:25:53	1910ms	2 NS 4 A 1 MX	🔓 Insecure	View
2026-06-22 16:53:32	2642ms	2 NS 4 A 1 MX	🔓 Insecure	View
2026-06-17 09:23:32	2970ms	2 NS 4 A 1 MX	🔓 Insecure	View