21bit.dk DNS records

🖥️ Nameservers2 records 82ms

Nameserver	IP addresses	PTR	ASN / ISP
sandra.ns.cloudflare.com	108.162.194.34 162.159.38.34 172.64.34.34 2606:4700:50::a29f:2622 2803:f800:50::6ca2:c222 2a06:98c1:50::ac40:2222	sandra.ns.cloudflare.com sandra.ns.cloudflare.com sandra.ns.cloudflare.com sandra.ns.cloudflare.com sandra.ns.cloudflare.com sandra.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
vicente.ns.cloudflare.com	108.162.195.239 162.159.44.239 172.64.35.239 2606:4700:58::a29f:2cef 2803:f800:50::6ca2:c3ef 2a06:98c1:50::ac40:23ef	vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 77ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.59.182	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.182.64	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 75ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:b640	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::6815:3bb6	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 98ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.59.182,172.67.182.64 ech=AEX+DQBBXgAgACAshcnie6caPfd9tQHpYT4sMqSar/j2aacuO/xYdyRSBAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b640,2606:4700:3033::6815:3bb6

📝 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)

🔐 DNSSEC229ms

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	2412862248
Primary NS (MNAME)	sandra.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

82ms

A

77ms

MX

97ms

AAAA

75ms

TXT

278ms

CAA

85ms

HTTPS

98ms

TLSA

71ms

SOA

0ms

MTA-STS

140ms

DNSSEC

229ms

SRV

141ms

Total

1499ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-23 02:54:54	1499ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-22 02:37:46	5246ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-08 19:16:08	8991ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-02 18:02:06	1638ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-20 02:28:00	2540ms	2 NS 2 A 0 MX	⚠️ Bogus	View
2026-06-19 16:12:55	1503ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-16 12:40:34	497ms	2 NS 2 A 0 MX	🔓 Insecure	View