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Technologies / Cloudflare / Telefonica UK

Companies using Cloudflare and Telefonica UK

4 companies in our data have public evidence for both Cloudflare and Telefonica UK. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

4companies use both
under 1%of Cloudflare users
100%of Telefonica UK users
0name both as subprocessors

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyCloudflareTelefonica UK
EDGE Clinicaledgeclinical.comEDGE is a clinical research management programme developed by the Clinical Informatics Research Unit at the University of Southampton.Healthcare
Esendex UKesendex.co.ukEsendex provides a multichannel messaging platform and APIs for sending and managing messages across channels such as SMS, WhatsApp, RCS, email and voice.Communications
Esendex AUesendex.com.auEsendex provides a multichannel messaging platform and APIs for sending SMS, WhatsApp, RCS, email and voice messages.Communications
Spryngspryng.beSpryng provides SMS, RCS and WhatsApp messaging services and APIs.Communications

The two technologies

Cloudflare

Cloud and infrastructure

Cloudflare is a platform for building, securing, and scaling applications, agents, and workforce workloads without managing infrastructure. It is used to run security, connectivity, and code on a global network close to users, applications, and sites.

Summarized from cloudflare.com on 8 Nov 2026.

under 1% of the 23,415 companies we see using Cloudflare also show the other.

All 23,415 companies using Cloudflare2,177 name it as a subprocessorMore in Cloud and infrastructure

Telefonica is a telecommunications company. It is used to provide connectivity and advanced services to citizens, businesses and institutions.

Summarized from telefonica.com on 8 Nov 2026.

100% of the 4 companies we see using Telefonica UK also show the other.

All 4 companies using Telefonica UK

Other pairs

Companies with their own evidence for both.

More with Cloudflare

Google Workspace14,330companiesGoogle Tag Manager9,212companiesGoogle Analytics8,287companiesNext.js6,413companiesAmazon Web Services5,366companiesVercel4,831companies

Questions

How many companies use both Cloudflare and Telefonica UK?

4 companies in StrataDB's data have public evidence for both. Our coverage is partial, so the real number is higher.

Which companies use Cloudflare and Telefonica UK?

EDGE Clinical, Esendex UK, Esendex AU and Spryng. Each one links to the evidence behind it.

How does StrataDB know a company uses Cloudflare and Telefonica UK?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Cloudflare and Telefonica UK

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
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