Exhibit 8.1

LIST OF CERTAIN SUBSIDIARIES OF AMÉRICA MÓVIL, S.A.B. DE C.V.

As of December 31, 2023

Name of Company	Jurisdiction	Ownership Interest		Main Activity
Sercotel, S.A. de C.V.	Mexico		100.0	Holding Company
CGTEL, S.A.P.I. de C.V.	Mexico		100.0	Holding Company
Radiomóvil Dipsa, S.A. de C.V. (Telcel)	Mexico		100.0	Wireless
Teléfonos de México, S.A.B. de C.V.	Mexico		98.8	Fixed-line
AMOV I, S.A. de C.V.	Mexico		100.0	Holding Company
Controladora de Servicios de Telecomunicaciones, S.A. de C.V.	Mexico		100.0	Holding Company
Claro Telecom Participações S.A.	Brazil		100.0	Holding Company
Claro S.A. (Claro Brasil)	Brazil		99.6	Fixed-line/Wireless
Comunicación Celular S.A. (Comcel)	Colombia		99.5	Wireless
A1 Telekom Austria AG	Austria		58.4	Fixed-line/Wireless