What powers 
nic.cz?
Last seen Sep 2026 · 51 technologies across 22 categories
Advertising
Analytics
CDN
CMS
Databases
Font scripts
Issue trackers
JavaScript frameworks
JavaScript graphics
JavaScript libraries
LMS
Miscellaneous
Performance
Programming languages
Rich text editors
Security
SEO
Tag managers
UI frameworks
Web frameworks
Web servers
Widgets
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
- Oct 2026 * removed from robots.txt
- Oct 2026 amazonbot removed from robots.txt
- Oct 2026 petalbot removed from robots.txt
- Sep 2026 robots.txt removed
- Sep 2026 petalbot added to robots.txt
- Sep 2026 amazonbot added to robots.txt
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| whois cz | #2 | 28 |
| whois v | #44 | 3 |
| czc | #63 | 2 |
| mox nix | #71 | 1 |
| ncz | #88 | 1 |
| whois lupa | #27 | 0 |
| whois cz | #42 | 0 |
| whois 4 | #23 | 0 |
| zspo | #45 | 0 |
| zspo | #13 | 0 |
| zonemaster | #71 | 0 |
| bird internet routing daemon | #72 | 0 |
| cesnet | #43 | 0 |
| cn nic | #43 | 0 |
| tld se | #81 | 0 |
| tld cz | #64 | 0 |
| tld cz | #32 | 0 |
| top level domain cz | #37 | 0 |
| turris router | #61 | 0 |
| uis czu | #49 | 0 |
| vlastnik | #50 | 0 |
| wedos webmail | #37 | 0 |
| ascio technologies inc | #43 | 0 |
| ascio technologies | #30 | 0 |
| ripe whois lookup | #61 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 76% desktop
- 23% phone
- 1% tablet
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
8.06 / 10 · ranked #6,363 of all domains
1,290 referring domains · OpenPageRank
Search traffic
35 est. monthly organic visits (US)
59 keywords in Google's top 30
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 0.5 MB · 65 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
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ista.ac.at 3 sharedh-da.de 3 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- Blog zaměstnanců CZ.NIC (CZ.NIC on Wikidata)
- Founded: 1998
- Sector: Internet
- Country: Czech Republic
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Registered Oct 1997 (28 years), renews Mar 2027
- Hosted on CZNIC-AS (217.31.205.50, IPv6)
- DNS: nic.cz
- Email: nic.cz
- Email security: no SPF record, no DMARC record, DNSSEC signed, CAA
- SSL: Let's Encrypt, ECDSA P384, expires Nov 2026
- Common Crawl link graph: rank 8,450, 111 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| blog.nic.cz | 17 |
| gitlab.nic.cz | 15 |
| en.blog.nic.cz | 12 |
| gitlab.labs.nic.cz | 12 |
| kariera.nic.cz | 10 |
| vip.nic.cz | 10 |
| aukce.nic.cz | 9 |
| fred.nic.cz | 9 |
| knihy.nic.cz | 9 |
| podpora.nic.cz | 9 |
| haas.nic.cz | 8 |
| moodle.nic.cz | 8 |
| stats.nic.cz | 8 |
| www.nic.cz | 8 |
| akademie.nic.cz | 7 |
| bird.nic.cz | 7 |
| test-ipv6.nic.cz | 5 |
| zonemaster.nic.cz | 5 |
| mailing-turris.nic.cz | 4 |
| mailing.labs.nic.cz | 4 |
| pkg.labs.nic.cz | 4 |
| datovka.nic.cz | 2 |
| debian.nic.cz | 2 |
| mirrors.nic.cz | 2 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Angular May 2026
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Debian May 2026
- dropped TypeScript May 2026
- dropped Zone.js May 2026
- detected Astro Apr 2026
- detected Svelte Apr 2026
- detected Element UI Feb 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025