CC Madhya 20.214

eka ‘kṛṣṇaloka’ haya trividha-prakāra
gokulākhya, mathurākhya, dvārakākhya āra
Word for word: 
eka — one; kṛṣṇa-loka — the planet known as Kṛṣṇaloka; haya — there is; tri-vidha-prakāra — in three different divisions; gokula-ākhya — Gokula; mathurā-ākhya — Mathurā; dvārakā-ākhya — Dvārakā; āra — and.
Translation: 
“The planet of Kṛṣṇaloka is divided into three sections — Gokula, Mathurā and Dvārakā.