crk.cz website report
Crk was registered 25 years 10 months ago, is ranked #925,067 worldwide (top 27%), has an estimated value of $1,786. It may earn around $194 per month from advertising.
Czech
Last updated
Czech RepublicKey facts about crk.cz
- Domain
- crk.cz
- Website name
- Úvodní strana | Český Radioklub
- Estimated worth
- $1,786
- Global rank
- #925,067 (top 27% of 3.4M ranked sites)
- Monthly visitors (est.)
- 2,033 · 102K page views
- Registered
- December 6, 2000 (25 years 10 months ago)
- Expires
- December 8, 2026
- Registrar
- REG-WEB4U
- Server location
Czech Republic- Network
- WEB4U AS39790
- Email provider
- Self-hosted / other (mx1.mailchannels.net)
- Language
- Czech
- Data updated
Estimated traffic & revenue
| Page views | Visitors | Ad revenue | |
|---|---|---|---|
| Daily | 3,388 | 68 | $6 |
| Monthly | 101,637 | 2,033 | $194 |
| Yearly | 1,219,644 | 24,396 | $2,328 |
Modelled from the global rank — not measured analytics. Use them to compare sites, not as exact figures.
Global rank history
Monthly values
| Month | Global rank |
|---|---|
| 2026-06 | #37,780,834 |
| 2026-07 | #740,922 |
| 2026-08 | #797,462 |
| 2026-09 | #925,067 |
Source: Rankeez (Tranco, Majestic, DomCop, Cisco Umbrella).
How we estimate crk.cz's value
The estimate is the higher of two independent approaches, both computed automatically from public data.
- Traffic value: $1,786Driven by the global rank #925,067 (≈102K page views / month) plus a capped age bonus.
- Activity value: $735Domain age plus observable signs of an active, professionally run website.
Activity signals found
| Domain age (25 years 10 months) | $400 |
| Active website with metadata | +$150 |
| Email authentication (SPF) | +$50 |
| Security headers (45/100) | +$135 |
Revenue, sales or private analytics are not public and are not included. This is not an appraisal or a sale price.
On-page SEO
| Title | Úvodní strana | Český Radioklub 31 chars |
|---|---|
| Meta description | Missing |
| Meta keywords | None |
| Language | Czech |
| Response time | 0.36 s Fast |
Homepage structure
Exactly one H1 heading — good practice.
Technology & infrastructure
| CDN / proxy | None detected |
|---|---|
| Web server | openresty |
| Platform / language | Not disclosed |
| DNS provider | Unknown |
| Email provider | Self-hosted / other (mx1.mailchannels.net) |
| SPF record | v=spf1 include:_spf.web4u.cz ~all |
| IPv6 (AAAA) | No |
| CAA record | No |
Services verified in DNS
No third-party verification records found.
Domain name
| Extension | .cz — the country-code extension of Czech Republic |
|---|---|
| Name length | 3 characters Short |
| Hyphens / digits | No hyphen · no digits |
Security headers
Homepage answered HTTP 200 at https://www.crk.cz/CZ after 2 redirects · checked Oct 24, 2026
- HTTPSThe homepage is served over an encrypted HTTPS connection.
- HTTP → HTTPS redirectVisitors typing http:// are redirected to the secure version.
- Strict-Transport-Security (HSTS)Not set: browsers may still try plain HTTP first.
- Content-Security-PolicyNot set: no restriction on which scripts may run.
- Clickjacking protectionNeither X-Frame-Options nor CSP frame-ancestors is set.
- X-Content-Type-OptionsNot set to nosniff.
- Referrer-PolicyNot set (browsers default to strict-origin-when-cross-origin).
- Permissions-PolicyNot set: browser features are not explicitly restricted.
- Cookie flags1 cookie(s) set; SESS45d06011966106eb9980101b7c32f532 (no Secure/HttpOnly/SameSite).
- Software version disclosureNo software version numbers disclosed in headers.
Raw HTTP response headers
HTTP/2 200 server: openresty date: Sat, 24 Oct 2026 15:55:08 GMT content-type: text/html; charset=utf-8 set-cookie: SESS45d06011966106eb9980101b7c32f532=4a069745dd06e1e14d487d5fb6122faa; expires=Mon, 16-Nov-2026 19:28:28 GMT; path=/; domain=.crk.cz expires: Sun, 19 Nov 1978 05:00:00 GMT last-modified: Sat, 24 Oct 2026 15:55:08 GMT cache-control: store, no-cache, must-revalidate, post-check=0, pre-check=0 x-w4u-upstream: http://data28_php52 content-encoding: gzip
Hosting
| IP address | 81.91.86.11 |
|---|---|
| Location | Czech Republic |
| Network (ISP) | Web4U s.r.o. |
| Autonomous system | AS39790 AS of Web4U |
| Server software | openresty |
Nameservers
| Host | IP | Country |
|---|---|---|
| ns2.web4u.cz (85.207.53.12, 2a02:a40:100:28ff::12) | ns2.web4u.cz (85.207.53.12, 2a02:a40:100:28ff::12) | — |
| ns.web4u.cz (185.14.224.241, 2001:1568:fd::241) | ns.web4u.cz (185.14.224.241, 2001:1568:fd::241) | — |
Domain registration (WHOIS)
| Registrar | REG-WEB4U |
|---|---|
| Created | December 6, 2000 25 years 10 months ago |
| Updated | December 1, 2014 |
| Expires | December 8, 2026 in 36 days |
Raw WHOIS record
% (c) 2006-2021 CZ.NIC, z.s.p.o. % % Intended use of supplied data and information % % Data contained in the domain name register, as well as information % supplied through public information services of CZ.NIC association, % are appointed only for purposes connected with Internet network % administration and operation, or for the purpose of legal or other % similar proceedings, in process as regards a matter connected % particularly with holding and using a concrete domain name. % % Full text available at: % http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/ % % See also a search service at http://www.nic.cz/whois/ % % % Whoisd Server Version: 3.15.0 % Timestamp: Sun Sep 13 07:18:11 2026 domain: crk.cz registrant: CESKY-RADIOKLUB admin-c: GUN389-20001206P nsset: WEB4U keyset: WEB4U registrar: REG-WEB4U registered: 06.12.2000 16:43:00 changed: 01.12.2014 08:27:01 expire: 08.12.2026 contact: CESKY-RADIOKLUB org: CESKY RADIOKLUB name: CESKY RADIOKLUB address: U Pergamenky 3 address: Praha 7 address: 17000 address: CZ registrar: REG-MOJEID created: 01.12.2014 08:22:21 contact: GUN389-20001206P org: Český radioklub name: Josef Zabavík address: U Pergamenky 3 address: Praha 7 address: 17000 address: CZ registrar: REG-WEB4U created: 10.08.2001 22:13:00 changed: 15.05.2018 21:32:00 nsset: WEB4U nserver: ns2.web4u.cz (85.207.53.12, 2a02:a40:100:28ff::12) nserver: ns.web4u.cz (185.14.224.241, 2001:1568:fd::241) tech-c: WEB4U registrar: REG-WEB4U created: 03.10.2007 14:53:59 changed: 11.12.2024 19:13:20 contact: WEB4U org: Web4U s.r.o. name: František Princ address: Korunní 2569/108 address: Vinohrady address: Praha 10 address: 10100 address: CZ registrar: REG-WEB4U created: 03.10.2007 14:48:14 changed: 24.04.2023 10:14:55 keyset: WEB4U dnskey: 257 3 14 7Zllkn95exAgF2rGMLeDUfHSJHKmZ0U4Cr2I492Gdg/Dn4LX5F0HWrRsM+ssztoWHiMz+mQcfuAfRVPkADkzIDFxKxEQ8krciYIU6ft9iOpv8m5kzzjxd+nTYMxoYil3 tech-c: WEB4U registrar: REG-WEB4U created: 23.09.2009 14:06:52 changed: 25.06.2025 12:25:01
DNS records
| Type | Host | Value | TTL |
|---|---|---|---|
| A | crk.cz | ip: 81.91.86.11 | 14398 |
| NS | crk.cz | target: ns.web4u.cz | 14400 |
| NS | crk.cz | target: ns2.web4u.cz | 14400 |
| SOA | crk.cz | mname: ns.web4u.cz rname: admin.web4u.cz serial: 2025110301 refresh: 10800 retry: 3600 expire: 1209600 minimum-ttl: 14400 | 14397 |
| MX | crk.cz | pri: 10 target: mx1.mailchannels.net | 14400 |
| MX | crk.cz | pri: 10 target: mx2.mailchannels.net | 14400 |
| TXT | crk.cz | txt: v=spf1 include:_spf.web4u.cz ~all | 14400 |
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crk.cz compared with similar websites
| Website | Global rank | Est. worth | Registered | Hosted in |
|---|---|---|---|---|
| crk.cz | #925,067 | $1,786 | 2000 | Czech Republic |
| ceskyhokej.cz | #143,111 | $13,408 | 2001 |  United States |
| knihovnatabor.cz | #1,509,902 | $1,005 | 2012 |  Germany |
| tvorivaskola.cz | #22,107,474 | $401 | 2002 | Czech Republic |
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Questions about crk.cz
When was crk.cz registered?
Crk.cz was registered on December 6, 2000, making it 25 years 10 months old.
Who is the domain registrar for crk.cz?
Crk.cz is registered through REG-WEB4U.
Where is crk.cz hosted?
Crk.cz's server (IP 81.91.86.11) is located in Czech Republic.
How much is crk.cz worth?
We estimate crk.cz is worth $1,786. This is an automated estimate based on the site's global traffic rank, domain age and observable activity signals (professional email, business services, security, CDN) — not a professional appraisal or a real sale price.
How much traffic does crk.cz get?
Based on its rank, crk.cz receives roughly 2,033 unique visitors and 102K page views per month. These figures are modelled from the rank, not measured.
What is crk.cz's global rank?
Crk.cz has an estimated global rank of 925,067, sourced from Rankeez.com, which aggregates the Tranco, Majestic, DomCop and Cisco Umbrella rankings. Its rank has improved over the tracked period. This is an independent estimate, not affiliated with Amazon Alexa, which discontinued its own ranking service in 2022.
Who hosts crk.cz?
Crk.cz resolves to 81.91.86.11, on the network of WEB4U (AS39790).
What email provider does crk.cz use?
According to its MX records, crk.cz receives email with Self-hosted / other (mx1.mailchannels.net). It publishes an SPF record to authenticate its outgoing mail.
When does crk.cz expire?
The domain registration of crk.cz is valid until December 8, 2026 (in 36 days), at REG-WEB4U. Owners usually renew before that date.
What websites are similar to crk.cz?
Popular websites in the same category as crk.cz include ceskyhokej.cz, knihovnatabor.cz, tvorivaskola.cz.
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Shows your live global rank. To cite this report: “StatMemory, crk.cz website report, https://statmemory.com/crk.cz”.
StatMemory is not affiliated with crk.cz. This report shows publicly available data (DNS, WHOIS, HTTP headers, public top-site lists) and automated estimates for information purposes.