Telmex phone number
The Telmex number for customer service is 800 123 2222
✔ Verified on the official website on Sep 16, 2026. See official source
All official Telmex numbers
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Customer service 800 123 2222See reports for this number
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Unrecognized charges on your bill 800 123 0000See reports for this number
Did someone call claiming to be Telmex?
The number shown on your screen can be spoofed. If someone claiming to be Telmex asks for passwords, SMS codes, bank details or an urgent payment, hang up and call one of the official numbers on this page yourself. Never use a number given to you during the call.
quienmellama.net is not affiliated with Telmex. We collect these numbers from its official website to help you identify calls. If something changed, email us at contacto@quienmellama.net.
Frequently asked questions
What is the Telmex phone number?
The official Telmex number for customer service is 800 123 2222. This page lists all its official lines, with hours and cost when the source provides them.
How do I know if a call from Telmex is real?
Do not rely only on the number on your screen, because it can be spoofed. If they ask for personal data, passwords or money, hang up and call an official Telmex number yourself. If the matter was real, they will confirm it.
How much does it cost to call 800 123 2222?
800 number: free for the caller.