BSNL: How to check GPRS/2G/3G Data balance and validity

Find information on SMS shortcodes and USSD codes to check BSNL GPRS/2G/3G Data usage balance and validity.
To know your main BSNL Account Balance and Validity information dial *123# from your BSNL mobile or dial 123 to check your balance and validity on the IVR.

For Assam, North East Circle, Kolkata & West Bengal Circle

• Data Balance & Validity: *123*10#
• Night Balance & Validity: *123*8#
• SMS: ‘USAGE DATA’ to 53738
• Onnet and offnet free minutes: *123*9#

For Maharastra (MH) & Goa Circle

• Dial *112#

For AP Circle

• *234#
• By dialing 123 ( IVRS ) it will be in subsidiary account 3

For UP Circle

• Dial *123*6#

For Tamil Nadu Circle

• SMS ‘DATA3G’ to 53733
• SMS ‘DATA2G’ to 53733

For Kerala Circle

• *124*1#

If any options are incorrect or not working, or if there is any update in the codes, please post them here….