blackbox.dk DNS records

🖥️ Nameservers2 records 61ms

Nameserver	IP addresses	PTR	ASN / ISP
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ursula.ns.cloudflare.com	108.162.194.191 162.159.38.191 172.64.34.191 2606:4700:50::a29f:26bf 2803:f800:50::6ca2:c2bf 2a06:98c1:50::ac40:22bf	ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 55ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.70.22	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.217.241	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	172.67.217.241

🔷 AAAA Records (IPv6)2 records 57ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:4616	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d9f1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 74ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.70.22,172.67.217.241 ech=AEX+DQBBhgAgACD3kTKr4mmhdmqt93xaex5UtQANHHI70Pr93iCzaPMBDwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4616,2606:4700:3035::ac43:d9f1

📝 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)

🔐 DNSSEC123ms

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	2410741258
Primary NS (MNAME)	justin.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

61ms

A

55ms

MX

52ms

AAAA

57ms

TXT

221ms

CAA

62ms

HTTPS

74ms

TLSA

55ms

SOA

0ms

MTA-STS

86ms

DNSSEC

123ms

SRV

92ms

Total

621ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 04:53:24	621ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-29 02:55:30	867ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-13 05:28:59	2764ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-10 14:56:03	1132ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-09 05:03:21	770ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-07 00:37:14	733ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-05 20:10:46	8682ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-04 13:24:12	1383ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-03 13:20:45	3243ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-06-27 23:29:34	1614ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-16 14:45:02	592ms	2 NS 2 A 0 MX	🔓 Insecure	View