The new way of dialing long distance to Mexico City is: (011 52 55) 5557 5788, the last 8 digits are the local number.

Saludos

Ing. Armando Lanz
Lanz Consultores en Energ?a S.C.
Rodolfo Gaona # 6 - 503
Col. Lomas de Sotelo
Naucalpan, Edo. de M?xico 53950
Tel: (52 55) 5557 5788
Fax: (52 55) 5557 5795
Cel: (52 55) 5502 0308