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Technologies / Bandwidth / Telefonica UK

Companies using Bandwidth and Telefonica UK

3 companies in our data have public evidence for both Bandwidth and Telefonica UK, and 3 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

3companies use both
10%of Bandwidth users
75%of Telefonica UK users
3name 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

CompanyBandwidthTelefonica UK
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

Bandwidth

Email and communications

Bandwidth is a communications platform offering APIs and cloud services for voice, messaging, and emergency calling. It is used by enterprises and carriers to build and manage communications such as calls, SMS, MMS, RCS, and SIP trunking.

Summarized from bandwidth.com on 8 Nov 2026.

10% of the 29 companies we see using Bandwidth also show the other.

All 29 companies using Bandwidth28 name it as a subprocessorMore in Email and communications

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.

75% 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 Bandwidth

Cloudflare29companiesAmazon Web Services23companiesGoogle Tag Manager23companiesGoogle Workspace22companiesTwilio20companiesGoogle14companies

Questions

How many companies use both Bandwidth and Telefonica UK?

3 companies in StrataDB's data have public evidence for both, and 3 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Bandwidth and Telefonica UK?

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

How does StrataDB know a company uses Bandwidth 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 Bandwidth 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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