resources/metadata/81/operators.csv

Id                     ; Domestic Selection Codes ; Name:en
kddi                   ;                          ; "KDDI"
nttdocomo              ;                          ; "NTT Docomo"
okinawa_cellular       ;                          ; "Okinawa Cellular"
rakuten_communications ; "003768"                 ; "Rakuten Communications"
softbank               ;                          ; "Softbank"