For Kolkata telecom circle, BSNL Mobile has been allocated 5 mobile Number series. These mobile number series are: - 9189, 9432, 9433, 9477 and 8902. Unless otherwise a consumer has opted for Mobile Number Portability (MNP), if his/her number starts with any of these series 9189, 9432, 9433, 9477 and 8902. then you can certainly say that the number belongs to Kolkata telecom circle and the telecom operator is BSNL Mobile.

You can view the list of all mobile series of BSNL Mobile in Kolkata below: