All mobile numbers in India have the prefix 9 (This includes pager services,
but the use of pagers is on the decline). Each zone is allowed to have multiple
private operators (earlier it was 2 private + BSNL, subsequently it was changed
to 3 private + BSNL in GSM 900/1800, now it also includes 2 private
+ BSNL in CDMA). All cellphone numbers are 10 digits long, (normally)
split up as OO-AA-NNNNNN where OO is the operator code,
AA is the zone code assigned to the operator, and NNNNNN is the
subscriber number.
Numbering plan
92-xx-yyyyyy - Tata Indicom mobile phones (CDMA).
93-xx-yyyyyy - Reliance India Mobile (CDMA).
94-xx-yyyyyy - BSNL GSM Network.
97-xx-yyyyyy - All GSM operators except BSNL
98-xx-yyyyyy - All GSM operators except BSNL
99-xx-yyyyyy - All GSM operators except BSNL
visit the site to get meore information about the Telephone Codes
http://tinyurl.com/yx6q8f
