nbjbooks.dk DNS records

🖥️ Nameservers2 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
cortney.ns.cloudflare.com	108.162.192.87 172.64.32.87 173.245.58.87 2606:4700:50::adf5:3a57 2803:f800:50::6ca2:c057 2a06:98c1:50::ac40:2057	cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com cortney.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
cullen.ns.cloudflare.com	108.162.195.91 162.159.44.91 172.64.35.91 2606:4700:58::a29f:2c5b 2803:f800:50::6ca2:c35b 2a06:98c1:50::ac40:235b	cullen.ns.cloudflare.com cullen.ns.cloudflare.com cullen.ns.cloudflare.com cullen.ns.cloudflare.com cullen.ns.cloudflare.com cullen.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.32.236	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.188.74	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.32.236
🔶 Autoconfig	104.21.32.236

🔷 AAAA Records (IPv6)2 records 37ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:bc4a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:20ec	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 35ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.32.236,172.67.188.74 ech=AEX+DQBBAQAgACCmE08AFi8wj8zkVCYeEKkHTSWCakI5+RhKNOfGMHA4TgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:bc4a,2606:4700:3036::6815:20ec

📝 TXT Records1 records 209ms

TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (nbjbooks.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -all

📨 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 / DANE2 records 70ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC2055ms

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	2411971889
Primary NS (MNAME)	cortney.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

38ms

A

36ms

MX

48ms

AAAA

37ms

TXT

209ms

CAA

42ms

HTTPS

35ms

TLSA

70ms

SOA

0ms

MTA-STS

114ms

DNSSEC

2055ms

SRV

98ms

Total

3221ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 17:20:49	3221ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-12 02:18:57	1006ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-18 13:08:28	809ms	2 NS 2 A 1 MX	❓ Unknown	View
2026-06-30 15:10:32	870ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-26 01:23:38	3581ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-23 08:01:15	908ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 04:20:19	2253ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-17 20:14:49	1961ms	2 NS 2 A 1 MX	🔓 Insecure	View