nbjbooks.dk

📜 Historical scan 2026-09-30 23:15:05 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nbjbooks.dk is a .dk domain served by 2 nameservers (cortney.ns.cloudflare.com, cullen.ns.cloudflare.com). It was registered on 17 October 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.32.236 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 34ms

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 Records#

2 records 53ms

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 Records#

1 records 59ms

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	172.67.188.74
🔶 Autoconfig	172.67.188.74

🔷 AAAA Records (IPv6)#

2 records 49ms

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 Records#

1 records 49ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.32.236,172.67.188.74 ech=AEX+DQBBEgAgACCwaK7PCpaZAyTO+w4sUlgWGSG+/t/DPHwvrninBJj1FwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:bc4a,2606:4700:3036::6815:20ec

📝 TXT Records#

1 records 233ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-22 07:00:52

www	104.21.32.236 172.67.188.74 2606:4700:3034::ac43:bc4a 2606:4700:3036::6815:20ec (AS13335) (address records, no CNAME)
www vs bare domain	Same network nbjbooks.dk: 104.21.32.236 172.67.188.74 2606:4700:3034::ac43:bc4a 2606:4700:3036::6815:20ec (AS13335) www.nbjbooks.dk: 104.21.32.236 172.67.188.74 2606:4700:3034::ac43:bc4a 2606:4700:3036::6815:20ec (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

3 records 73ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	4B949F05A63FED95FC94B3A83DD70167…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC#

102ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

85ms

Field	Value
Serial	2415108493
Primary NS (MNAME)	cortney.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 20:14:37

Field	Value
Registrar	Simply.com A/S
Registered	2025-10-17
Expires	2027-10-16 (355d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

53ms

59ms

AAAA

49ms

TXT

233ms

CAA

46ms

HTTPS

49ms

TLSA

73ms

SOA

85ms

MTA-STS

56ms

DNSSEC

102ms

SRV

84ms

Total

721ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 07:00:52	501ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-10 03:42:31	2734ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 23:15:05 shown	721ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 09:57:50	621ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-17 23:10:57	1712ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 17:20:49	3221ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-12 02:18:57	1006ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-18 13:08:28	809ms	2 NS 2 A 1 MX	❓ Unknown
2026-06-30 15:10:32	870ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 01:23:38	3581ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 08:01:15	908ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 04:20:19	2253ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 20:14:49	1961ms	2 NS 2 A 1 MX	🔓 Insecure