| | | | | | STD Numbers of Tamil Nadu | |
| | Tamil Nadu Areas | STD Codes | Ootacamund | 0423 | Orathanad | 04372 | Palacode | 04348 | Palani | 04545 | Palladum | 04255 | Papanasam | 04374 | Paramakudi | 04564 | Pattukottai | 04373 | Perambalur | 04328 | Perundurai | 04294 | Pollachi | 04259 | Polur | 04181 | Pondicherry | 0413 | Ponnamaravathi | 04333 | Ponneri | 044 | Pudukkottai | 04322 | Rajapalayam | 04563 | Ramanathpuram | 04567 | Rameshwaram | 04573 | Ranipet | 04172 | Rasipuram | 04287 | Salem | 0427 |
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