Bharat Sanchar Nigam Limited (Chennai) O/o CGM, BSNL CHTD, No.78, Purasaiwakkam High Road, Chennai-600010
Bharat Sanchar Nigam Limited (KOLKATA) 0/o PGM/NWO/CFA Room No.218, 2nd floor Telephone Bhawan,34.B.B.D. BAG, Kolkata 700001
Bharat Sanchar Nigam Limited (KOLKATA) Telephone Kendra (TBZ), 10th Floor, P-10, New CIT Road, Kolkata -700073
Bharat Sanchar Nigam Limited (Bihar & Jharkhand) O/o CGMT, JKD, Room No. A204, ARTTC Building Near Jumar RiverRanchi
Bharat Sanchar Nigam Limited (Jammu and Kashmir) GM CFA, O/o CGMT , J&K Circle , BSNL Telephone exchange building , bahu plaza , adjacent to RBI , Railway road , Jammu , J&K
