clockss.org website report
CLOCKSS is a collaboration of world leading publishers and libraries providing digital preservation services for the long-term survival of digital scholarship.
Clockss was registered 20 years 9 months ago, is ranked #127,926 worldwide (top 4%), has an estimated value of $15,219. It may earn around $1,425 per month from advertising.
Education English
Last updated
United StatesKey facts about clockss.org
- Domain
- clockss.org
- Website name
- Home - Digital Preservation Services - CLOCKSS
- Category
- Education
- Estimated worth
- $15,219
- Global rank
- #127,926 (top 4% of 3.3M ranked sites)
- Monthly visitors (est.)
- 15K · 747K page views
- Registered
- January 16, 2006 (20 years 9 months ago)
- Expires
- January 16, 2027
- Registrar
- CSL Computer Service Langenbach GmbH d/b/a joker.com
- Server location
United States- Network
- University of California at San Diego AS7377
- Email provider
- Microsoft 365
- Language
- English
- Data updated
Estimated traffic & revenue
| Page views | Visitors | Ad revenue | |
|---|---|---|---|
| Daily | 24,890 | 498 | $48 |
| Monthly | 746,689 | 14,934 | $1,425 |
| Yearly | 8,960,268 | 179,208 | $17,100 |
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 | #37,541,246 |
| 2026-07 | #134,071 |
| 2026-08 | #127,926 |
Source: Rankeez (Tranco, Majestic, DomCop, Cisco Umbrella).
How we estimate clockss.org's value
The estimate is the higher of two independent approaches, both computed automatically from public data.
- Traffic value: $15,219Driven by the global rank #127,926 (≈747K page views / month) plus a capped age bonus.
- Activity value: $1,287Domain age plus observable signs of an active, professionally run website.
Activity signals found
| Domain age (20 years 9 months) | $337 |
| Active website with metadata | +$150 |
| Substantial homepage content | +$150 |
| Professional email (Microsoft 365) | +$150 |
| Email authentication (SPF) | +$50 |
| Business services (Google Workspace, HubSpot, Microsoft 365) | +$300 |
| Security headers (50/100) | +$150 |
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 | Home - Digital Preservation Services - CLOCKSS 46 chars |
|---|---|
| Meta description | CLOCKSS is a collaboration of world leading publishers and libraries providing digital preservation services for the long-term survival of digital scholarship. 159 chars |
| Meta keywords | None |
| Language | English |
| Response time | 0.43 s Fast |
Homepage structure
Exactly one H1 heading — good practice.
Technology & infrastructure
| CDN / proxy | None detected |
|---|---|
| Web server | nginx |
| Platform / language | PHP, WordPress |
| DNS provider | Unknown |
| Email provider | Microsoft 365 |
| SPF record | v=spf1 include:spf.protection.outlook.com include:_spf.google.com include:23864228.spf06.hubspotemail.net -all |
| IPv6 (AAAA) | No |
| CAA record | No |
Services verified in DNS
Google Search Console Google Workspace HubSpot Microsoft 365
Detected from TXT verification and SPF records published by the domain owner.
Domain name
| Extension | .org — a generic extension popular with non-profits and communities |
|---|---|
| Name length | 7 characters Medium |
| Hyphens / digits | No hyphen · no digits |
Security headers
Homepage answered HTTP 200 at https://clockss.org/ · checked Oct 25, 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)max-age 183 days, includeSubDomains.
- 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 disclosureReveals X-Powered-By: PHP/8.4.27, which helps attackers target known vulnerabilities.
Raw HTTP response headers
HTTP/2 200 server: nginx date: Sun, 25 Oct 2026 03:33:17 GMT content-type: text/html; charset=UTF-8 content-length: 22078 x-powered-by: PHP/8.4.27, PleskLin link: <https://clockss.org/wp-json/>; rel="https://api.w.org/", <https://clockss.org/wp-json/wp/v2/pages/11>; rel="alternate"; title="JSON"; type="application/json", <https://clockss.org/>; rel=shortlink x-litespeed-tag: 148_PGSRP vary: Accept-Encoding content-encoding: gzip strict-transport-security: max-age=15768000; includeSubDomains
Hosting
| IP address | 44.199.152.91 |
|---|---|
| Location | United States |
| Network (ISP) | Amateur Radio Digital Communications |
| Autonomous system | AS7377 University of California at San Diego |
| Server software | nginx |
Nameservers
| Host | IP | Country |
|---|---|---|
| x.ns.joker.com | 194.245.103.13 |  Germany |
| y.ns.joker.com | 23.88.49.189 | United States |
| z.ns.joker.com | 192.95.37.184 |  Canada |
Domain registration (WHOIS)
| Registrar | CSL Computer Service Langenbach GmbH d/b/a joker.com |
|---|---|
| Created | January 16, 2006 20 years 9 months ago |
| Updated | January 13, 2026 |
| Expires | January 16, 2027 in 79 days |
| Status | clientTransferProhibited |
Raw WHOIS record
Domain Name: clockss.org Registry Domain ID: REDACTED Registrar WHOIS Server: http://whois.joker.com Registrar URL: http://www.joker.com Updated Date: 2026-01-13T23:06:07Z Creation Date: 2006-01-16T01:55:58Z Registry Expiry Date: 2027-01-16T01:55:58Z Registrar: CSL Computer Service Langenbach GmbH d/b/a joker.com Registrar IANA ID: 113 Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: +49.21186767447 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Name Server: x.ns.joker.com Name Server: y.ns.joker.com Name Server: z.ns.joker.com DNSSEC: unsigned URL of the ICANN Whois Inaccuracy Complaint Form: https://icann.org/wicf/ >>> Last update of WHOIS database: 2026-08-11T11:33:02Z <<< For more information on Whois status codes, please visit https://icann.org/epp Terms of Use: Access to Public Interest Registry WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Public Interest Registry registry database. The data in this record is provided by Public Interest Registry for informational purposes only, and Public Interest Registry does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Public Interest Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy. The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
DNS records
| Type | Host | Value | TTL |
|---|---|---|---|
| A | clockss.org | ip: 44.199.152.91 | 590 |
| NS | clockss.org | target: z.ns.joker.com | 21600 |
| NS | clockss.org | target: x.ns.joker.com | 21600 |
| NS | clockss.org | target: y.ns.joker.com | 21600 |
| SOA | clockss.org | mname: x.ns.joker.com rname: hostmaster.joker.com serial: 2026072412 refresh: 14400 retry: 3600 expire: 1209600 minimum-ttl: 300 | 86400 |
| MX | clockss.org | pri: 0 target: clockss-org.mail.protection.outlook.com | 3600 |
| TXT | clockss.org | txt: MS=ms30454987 | 600 |
| TXT | clockss.org | txt: google-site-verification=mcpA66HEthhd6mRtFkO_BeTFYX3k9DXaZbdvCWi6vEY | 600 |
| TXT | clockss.org | txt: v=spf1 include:spf.protection.outlook.com include:_spf.google.com include:23864228.spf06.hubspotemail.net -all | 600 |
| TXT | clockss.org | txt: 29alk8bdui0e54v2003pjla61c. | 600 |
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clockss.org compared with similar websites
| Website | Global rank | Est. worth | Registered | Hosted in |
|---|---|---|---|---|
| clockss.org | #127,926 | $15,219 | 2006 | United States |
| portico.org | #144,220 | $13,288 | 1999 | United States |
| casalini.it | #312,806 | $5,490 | 1997 | United States |
| rhizome.org | #11,219 | $277K | 1996 | United States |
| dpworkshop.org | #7,848,411 | $341 | 2011 | United States |
| apexcovantage.com | #1,210,983 | $1,373 | 2003 | United States |
| piql.com | #941,357 | $1,682 | 2006 | United States |
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Questions about clockss.org
When was clockss.org registered?
Clockss.org was registered on January 16, 2006, making it 20 years 9 months old.
Who is the domain registrar for clockss.org?
Clockss.org is registered through CSL Computer Service Langenbach GmbH d/b/a joker.com.
Where is clockss.org hosted?
Clockss.org's server (IP 44.199.152.91) is located in United States.
How much is clockss.org worth?
We estimate clockss.org is worth $15,219. 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 clockss.org get?
Based on its rank, clockss.org receives roughly 15K unique visitors and 747K page views per month. These figures are modelled from the rank, not measured.
What is clockss.org's global rank?
Clockss.org has an estimated global rank of 127,926, 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 clockss.org?
Clockss.org resolves to 44.199.152.91, on the network of University of California at San Diego (AS7377).
What email provider does clockss.org use?
According to its MX records, clockss.org receives email with Microsoft 365. It publishes an SPF record to authenticate its outgoing mail.
When does clockss.org expire?
The domain registration of clockss.org is valid until January 16, 2027 (in 79 days), at CSL Computer Service Langenbach GmbH d/b/a joker.com. Owners usually renew before that date.
What websites are similar to clockss.org?
Popular websites in the same category as clockss.org include portico.org, casalini.it, rhizome.org, dpworkshop.org, apexcovantage.com.
Own clockss.org? Add the badge
Shows your live global rank. To cite this report: “StatMemory, clockss.org website report, https://statmemory.com/clockss.org”.
StatMemory is not affiliated with clockss.org. This report shows publicly available data (DNS, WHOIS, HTTP headers, public top-site lists) and automated estimates for information purposes.