cbook.dk DNS records

🖥️ Nameservers2 records 37ms

Nameserver	IP addresses	PTR	ASN / ISP
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.
wanda.ns.cloudflare.com	108.162.192.240 172.64.32.240 173.245.58.240 2606:4700:50::adf5:3af0 2803:f800:50::6ca2:c0f0 2a06:98c1:50::ac40:20f0	wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.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
104.21.15.180	600s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.163.190	600s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 30ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:a3be	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:fb4	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 49ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.15.180,172.67.163.190 ech=AEX+DQBB/gAgACBIVulMEx7OVziL8f6Guob9W5ShrfTsiK0KKx+rZQwZKgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:a3be,2606:4700:3035::6815:fb4

📝 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)

🔐 DNSSEC72ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA67ms

Field	Value
Serial	2407113524
Primary NS (MNAME)	seth.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

37ms

A

37ms

MX

40ms

AAAA

30ms

TXT

192ms

CAA

41ms

HTTPS

49ms

TLSA

55ms

SOA

67ms

MTA-STS

42ms

DNSSEC

72ms

SRV

89ms

Total

452ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 13:46:27	847ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-08-26 12:50:02	522ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-08-06 18:24:18	1004ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-20 19:14:48	1037ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-11 09:21:43	902ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-30 10:07:44	817ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-30 01:49:08	828ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-25 07:25:01	2153ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-20 17:13:56	452ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-20 06:29:42	598ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-16 19:50:09	477ms	2 NS 2 A 0 MX	🔒 Secure	View