EX-8.1

Exhibit 8.1

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

As of March 31, 2021


Name of Company	Jurisdiction	Ownership Interest	Main Activity
América Móvil B.V.	Netherlands	100.00	Holding Company
Telekom Austria AG	Austria	51.00	Fixed-line/Wireless
AMX Tenedora, S.A. de C.V.	Mexico	100.0	Holding Company
Teléfonos de México, S.A.B. de C.V.	Mexico	98.8	Fixed-line
Compañía Dominicana de Teléfonos, S. A. (Codetel)	Dominican Republic	100.0	Fixed-line/Wireless
Sercotel, S.A. de C.V.	Mexico	100.0	Holding Company
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (Telcel)	Mexico	100.0	Wireless
Puerto Rico Telephone Company, Inc.	Puerto Rico	100.0	Fixed-line/Wireless
Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras)	Honduras	100.0	Wireless
Claro S.A. (Claro Brazil)	Brazil	99.6	Holding Company
AMX Brazil Holding S.A.R.L	Luxembourg	100.00	Holding Company
Claro NXT Telecomunicações S.A.. and subsidiaries	Brazil	99.3	Wireless
Americel S.A.	Brazil	100.0	Wireless
Telecomunicaciones de Guatemala, S.A.	Guatemala	99.3	Fixed-line/Wireless
Claro Guatemala, S.A.	Guatemala	100.00	Wireless
Empresa Nicaragüense de Telecomunicaciones, S.A.	Nicaragua	99.6	Fixed-line/Wireless
Estesa Holding Corp.	Panama	100.0	Holding Company
Cablenet, S.A.	Nicaragua	100.0	Cable TV
Estaciones Terrenas de Satélite, S.A. (Estesa)	Nicaragua	100.0	Cable TV
Compañía de Telecomunicaciones de El Salvador (CTE), S.A. de C.V.	El Salvador	95.8	Fixed-line
Cablenet, S.A. (Cablenet)	Guatemala	95.8	Fixed-line
Telecomoda, S.A. de C.V. (Telecomoda)	El Salvador	95.8	Directories Provider
CTE Telecom Personal, S.A. de C.V.	El Salvador	95.8	Wireless
Comunicación Celular S.A. (Comcel)	Colombia	99.5	Wireless