sofsem.cz website report
Sofsem was registered 27 years 8 months ago, is ranked #3,668,872 worldwide (top 110%), has an estimated value of $665. It may earn around $48 per month from advertising.
Technology & Computing English
Last updated
Czech RepublicKey facts about sofsem.cz
- Domain
- sofsem.cz
- Website name
- 403 Forbidden
- Category
- Technology & Computing
- Estimated worth
- $665
- Global rank
- #3,668,872 (top 110% of 3.3M ranked sites)
- Monthly visitors (est.)
- 507 · 25K page views
- Registered
- February 19, 1999 (27 years 8 months ago)
- Expires
- October 6, 2026
- Registrar
- REG-WEBGLOBE
- Server location
Prague, Czech Republic- Network
- Czech Academy of Sciences AS2852
- Email provider
- Self-hosted / other (c100.cs.cas.cz)
- Language
- English
- Data updated
Estimated traffic & revenue
| Page views | Visitors | Ad revenue | |
|---|---|---|---|
| Daily | 845 | 17 | $2 |
| Monthly | 25,346 | 507 | $48 |
| Yearly | 304,152 | 6,084 | $576 |
Modelled from the global rank — not measured analytics. Use them to compare sites, not as exact figures.
How we estimate sofsem.cz's value
The estimate is the higher of two independent approaches, both computed automatically from public data.
- Traffic value: $665Driven by the global rank #3,668,872 (≈25K page views / month) plus a capped age bonus.
- Activity value: $625Domain age plus observable signs of an active, professionally run website.
Activity signals found
| Domain age (27 years 8 months) | $400 |
| Active website with metadata | +$150 |
| Security headers (25/100) | +$75 |
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 | 403 Forbidden 13 chars |
|---|---|
| Meta description | Missing |
| Meta keywords | None |
| Language | English |
| Response time | 0.2 s Fast |
Homepage structure
Exactly one H1 heading — good practice.
Technology & infrastructure
| CDN / proxy | None detected |
|---|---|
| Web server | Apache |
| Platform / language | Not disclosed |
| DNS provider | Unknown |
| Email provider | Self-hosted / other (c100.cs.cas.cz) |
| SPF record | Missing |
| 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 | 6 characters Short |
| Hyphens / digits | No hyphen · no digits |
Security headers
Collected with an older method; a fresh check is running and will appear on your next visit.
- HTTPSThe homepage is not served over HTTPS.
- 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.
- Software version disclosureNo software version numbers disclosed in headers.
Raw HTTP response headers
HTTP/1.1 403 Forbidden Date: Thu, 12 Feb 2026 05:53:13 GMT Server: Apache Content-Length: 298 Connection: close Content-Type: text/html; charset=iso-8859-1
Hosting
| IP address | 147.231.6.218 |
|---|---|
| Location | Prague, Czech Republic |
| Network (ISP) | CESNET z.s.p.o. |
| Autonomous system | AS2852 CESNET z.s.p.o. |
| Server software | Apache |
Nameservers
| Host | IP | Country |
|---|---|---|
| fw.cs.cas.cz | 147.231.6.1 | Czech Republic |
| visla.utia.cas.cz | 147.231.12.1 | Czech Republic |
Domain registration (WHOIS)
| Registrar | REG-WEBGLOBE |
|---|---|
| Created | February 19, 1999 27 years 8 months ago |
| Updated | July 14, 2023 |
| Expires | October 6, 2026 Expired |
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: Thu Feb 12 06:53:12 2026 domain: sofsem.cz registrant: CID:COL-00001370 admin-c: CID:COL-00001370 nsset: WEBG-D271658 registrar: REG-WEBGLOBE registered: 19.02.1999 01:00:00 changed: 14.07.2023 12:47:15 expire: 06.10.2026 contact: CID:COL-00001370 org: Ústav informatiky AV ČR, v.v.i. name: Ladislav Beneš address: Pod Vodárenskou věží 2 address: Praha address: 18207 address: CZ registrar: REG-QUANTCOM created: 15.10.2008 12:05:11 changed: 15.05.2018 21:32:00 nsset: WEBG-D271658 nserver: fw.cs.cas.cz nserver: visla.utia.cas.cz tech-c: CID:COL-00001370 registrar: REG-WEBGLOBE created: 14.07.2023 12:47:13 changed: 11.12.2024 12:34:55
DNS records
| Type | Host | Value | TTL |
|---|---|---|---|
| A | sofsem.cz | ip: 147.231.6.218 | 86398 |
| NS | sofsem.cz | target: ns2.ignum.cz | 86400 |
| NS | sofsem.cz | target: fw.cs.cas.cz | 86400 |
| NS | sofsem.cz | target: visla.utia.cas.cz | 86400 |
| SOA | sofsem.cz | mname: fw.cs.cas.cz rname: marsik.cas.cz serial: 2025101000 refresh: 21600 retry: 3600 expire: 604800 minimum-ttl: 86400 | 86400 |
| MX | sofsem.cz | pri: 5 target: c100.cs.cas.cz | 86400 |
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sofsem.cz compared with similar websites
| Website | Global rank | Est. worth | Registered | Hosted in |
|---|---|---|---|---|
| sofsem.cz | #3,668,872 | $665 | 1999 | Czech Republic |
| hackcabin.com | #22,946,949 | $129 | 2021 |  Germany |
| elementqueries.com | #3,668,686 | $335 | 2023 | Germany |
| elemental-ui.com | #3,669,060 | $455 | 2015 |  United States |
| doesitarm.com | #3,669,089 | $365 | 2020 | United States |
| myavr.com | #3,669,100 | $620 | 2004 | Germany |
| mymag.com | #3,669,147 | $665 | 2000 | United States |
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Questions about sofsem.cz
When was sofsem.cz registered?
Sofsem.cz was registered on February 19, 1999, making it 27 years 8 months old.
Who is the domain registrar for sofsem.cz?
Sofsem.cz is registered through REG-WEBGLOBE.
Where is sofsem.cz hosted?
Sofsem.cz's server (IP 147.231.6.218) is located in Prague, Czech Republic.
How much is sofsem.cz worth?
We estimate sofsem.cz is worth $665. 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 sofsem.cz get?
Based on its rank, sofsem.cz receives roughly 507 unique visitors and 25K page views per month. These figures are modelled from the rank, not measured.
What is sofsem.cz's global rank?
Sofsem.cz has an estimated global rank of 3,668,872, sourced from Rankeez.com, which aggregates the Tranco, Majestic, DomCop and Cisco Umbrella rankings. This is an independent estimate, not affiliated with Amazon Alexa, which discontinued its own ranking service in 2022.
Who hosts sofsem.cz?
Sofsem.cz resolves to 147.231.6.218, on the network of Czech Academy of Sciences (AS2852).
What email provider does sofsem.cz use?
According to its MX records, sofsem.cz receives email with Self-hosted / other (c100.cs.cas.cz). No SPF record was found.
What websites are similar to sofsem.cz?
Popular websites in the same category as sofsem.cz include hackcabin.com, elementqueries.com, elemental-ui.com, doesitarm.com, myavr.com.
Own sofsem.cz? Add the badge
Shows your live global rank. To cite this report: “StatMemory, sofsem.cz website report, https://statmemory.com/sofsem.cz”.
StatMemory is not affiliated with sofsem.cz. This report shows publicly available data (DNS, WHOIS, HTTP headers, public top-site lists) and automated estimates for information purposes.