Exhibit 8.1

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

As of March 31, 2023

Name of Company	Jurisdiction	Ownership Interest		Main Activity
Sercotel, S.A. de C.V.	Mexico		100.0	Holding Company
Radiomóvil Dipsa, S.A. de C.V. (Telcel)	Mexico		100.0	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
AMX International Mobile, S.A. de C.V.	Mexico		100.0	Holding Company
Claro S.A. (Claro Brazil)	Brazil		99.6	Fixed-line/Wireless
Claro NXT Telecomunicações S.A.	Brazil		99.7	Wireless
Americel S.A.	Brazil		100.0	Wireless
Comunicación Celular S.A. (Comcel)	Colombia		99.5	Wireless
América Móvil B.V.	Netherlands		100.0	Holding Company
Telekom Austria AG	Austria		51.0	Fixed-line/Wireless
Telecomunicaciones de Guatemala, S.A.	Guatemala		99.3	Fixed-line/Wireless
Claro Guatemala, S.A.	Guatemala		100.0	Wireless
Cablenet, S.A. (Cablenet)	Guatemala		95.8	Fixed-line
Compañía de Telecomunicaciones de El Salvador (CTE), S.A. de C.V.	El Salvador		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
Estesa Holding Corp.	Panama		100.0	Holding Company
Empresa Nicaragüense de Telecomunicaciones, S.A.	Nicaragua		99.6	Fixed-line/Wireless
Cablenet, S.A.	Nicaragua		100.0	Cable TV
Estaciones Terrenas de Satélite, S.A. (Estesa)	Nicaragua		100.0	Cable TV
Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras)	Honduras		100.0	Wireless
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel)	Ecuador		100.0	Wireless
América Móvil Perú, S.A.C.	Peru		100.0	Wireless
AMX Argentina, S.A.	Argentina		100.0	Wireless
Telmex Argentina, S.A.	Argentina		100.0	Fixed-line
Ertach, S.A.	Argentina		100.0	Wireless
AMX Paraguay, S.A.	Paraguay		100.0	Wireless
AM Wireless Uruguay, S.A.	Uruguay		100.0	Wireless
Telstar, S.A.	Uruguay		100.0	Fixed-line
Flimay, S.A.	Uruguay		100.0	DTH
Compañía Dominicana de Teléfonos, S. A. (Codetel)	Dominican Republic		100.0	Fixed-line/Wireless
Puerto Rico Telephone Company, Inc.	Puerto Rico		100.0	Fixed-line/Wirele