| | | | | | STD Numbers of Tamil Nadu | |
| | Tamil Nadu Areas | STD Codes | Krishnagiri | 04343 | Kulithalai | 04323 | Kumbakonam | 0435 | Kuzhithurai | 04651 | Madurai | 0452 | Madurantgam | 044 | Manamadurai | 04574 | Manaparai | 04332 | Mannargudi | 04367 | Mayiladutjurai | 04364 | Mettupalayam | 04254 | Metturdam | 04298 | Mudukulathur | 04576 | Mulanur | 04202 | Musiri | 04326 | Nagapattinam | 04365 | Nagarcoil | 04652 | Namakkal | 04286 | Nanguneri | 04635 | Natham | 04544 | Oddanchatram | 04553 | Omalpur | 04290 |
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