AskKaka lists the STD code of Atmakur Nellore that is 08627. Atmakur Nellore is a part of Andhra Pradesh and the ISO code of Andhra Pradesh state is AP.
Atmakur Nellore STD code aka subscriber trunk dialing code is 08627 which is mentioned above on this page of AskKaka. We are great resource of finding Atmakur Nellore std code of Andhra Pradesh (AP).
Useful Info :-
Please take a note that if you are in India and dialing a landline number of Atmakur Nellore then you will have to dial STD code 08627 as a prefix followed by the phone number of a landline user and if you are calling Atmakur Nellore's phone number from a foreign country then you need to add +91 (the country code) followed by 8627, e.g. +918627 (no need to add "0" as prefix) followed by the landline phone number.
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