Service Provider

Code

Aircel, Dishnet Wireless

D

Airtel

A

BSNL

B

BPL Mobile/Loop Telecom

L

Datacom Solutions

C

HFCL Infotel

H

Idea Cellular

I

MTNL

M

Reliance Communications

R

Reliance Telecom

E

S tel

S

Shyam Telecom

Y

Spice Telecom

P

Swan Telecom

W

Tata Teleservices

T

Unitech

U

Vodafone





Service Circle

Code

Andhra Pradesh

A

Assam

S

Bihar

B

Delhi

D

Gujarat

G

Haryana

H

Himachal Pradesh

I

Jammu & Kashmir

J

Karnataka

X

Kerala

L

Kolkata

K

Madhya Pradesh

Y

Maharashtra

Z

Mumbai

M

North East

N

Orissa

O

Punjab

P

Rajasthan

R

Tamil Nadu

T

UP-East

E

UP-West

W

West Bengal