222 companies use Telekom Security, as of October 2026.
Telekom Security: Certificate authority (TeleSec). We've found 222 companies using Telekom Security, most often in IT Services (17%) and Retail (10%), typically with 201–1,000 employees and 89% based in Germany.
Customers222companies use it
Most popular withPublic Utility36× more likely than average
We've found 222 companies using Telekom Security among the 325,174 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use Telekom Security?
Telekom Security customers are most often in IT Services (17%), Retail (10%) and Healthcare (8%). The most common company size is 201–1,000 employees (36% of customers with a known size).
Which countries use Telekom Security the most?
Most Telekom Security customers we've found are in Germany (89%), Austria (3%) and Switzerland (1%).
What are the alternatives to Telekom Security?
The most used alternatives in the same category are reCAPTCHA (99,007 companies), Let's Encrypt (34,929 companies), GlobalSign (33,550 companies) and Proofpoint (30,437 companies).
How does runsonwhat know a company uses Telekom Security?
We read public traces only. For Telekom Security that means a domain-verification record in the company's DNS and the company's published subprocessor list. Every match keeps the record it came from.
rexx systemsPeople & HR44×more likely
etrackerAnalytics43×more likely
D-TrustSecurity & Compliance30×more likely
Eye-AbleSecurity & Compliance28×more likely
MindManagerCollaboration26×more likely
QuoVadisSecurity & Compliance22×more likely
SwissSignSecurity & Compliance21×more likely
CleverReachMarketing13×more likely
consentmanagerSecurity & Compliance7.5×more likely
UsercentricsSecurity & Compliance5.6×more likely
FigmaCollaboration5.0×more likely
MatomoAnalytics4.2×more likely