nntb.cz

https://nntb.cz· First analyzed 25 May 2026· Updated 25 May 2026

This site uses bot protection

The website blocked automated page access (e.g. Cloudflare Turnstile). Only DNS-based modules could be analyzed — hosting, SSL, email infrastructure, and domain info are shown below. Technology stack, SEO, and other page-content modules are unavailable for this site.

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Nameservers

ns-940.awsdns-53.net.ns-1412.awsdns-48.org.ns-1805.awsdns-33.co.uk.ns-6.awsdns-00.com.

Security Score

71%Good

HTTPS

No WAF

73d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.05.2026

Valid Until

07.08.2026

Subject Alternative Names (1)

nntb.cz

SHA-256 Fingerprint

2F:D3:6A:73:63:17:93:9F:7A:54:BF:81:C8:0D:42:97:B8:17:CB:47...

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Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

nntb.cz

Domain Age

9y 3m

Created

31.01.2017

Expires

30.01.2027

Last Updated

14.11.2024

Registrar

REG-WEDOS

DNSSEC

Not Enabled

Website Identity

nntb.cz

9 years old

Location detected: 🇨🇿 Czech Republicvia tld

REG-WEDOS📧 Google Workspace