Toṇḍaimaṇḍalam, also known as Toṇḍai Nāḍu, is a historical region located in the northernmost part of Tamil Nadu and southernmost part of Andhra Pradesh. Toṇḍaimaṇḍalam was divided into 24 kottams — s
Tondaimandalam region (red color) comprising Nellore, Chittoor, Tirupati, Annamayya, Vellore, Ranipet, Tirupattur, Tiruvannamalai, Villupuram, Tiruvallur, Chengalpattu, and Chennai districts of modern-day Andhra Pradesh and Tamil Nadu.