In Jain cosmology, "Devlok" refers to the realms or abodes of celestial beings (devas or gods). There are seven main levels or categories of heavenly abodes where these celestial beings reside. These seven Devloks are:

1. Saukra Deva-loka (First Heaven)

- This is the lowest heaven where devas reside.

1. Isana Deva-loka (Second Heaven)

- The second level of heavenly abode, superior to the first.

1. Sanatkumara Deva-loka (Third Heaven)

- The third heaven, ruled by Sanatkumara.

1. Mahendra Deva-loka (Fourth Heaven)

- The fourth heaven, ruled by Mahendra.

1. Brahma Deva-loka (Fifth Heaven)

- The fifth heaven, ruled by Brahma.

1. Lantava Deva-loka (Sixth Heaven)

- The sixth level of heaven.

1. Kapishtha Deva-loka (Seventh Heaven)

- The seventh and highest of the standard heavens in the upper world.

These seven Devloks are collectively called Kalpa-vasi heavens, and the devas residing here are called Kalpavasis. Above these, there are even higher abodes called Anuttara-vimana (the highest heavens), but the question specifically asks for the seven Devloks.

The souls born in these heavens enjoy great pleasures as a result of their past virtuous karmas, but these are not permanent abodes. After the exhaustion of their merit, the souls are reborn in other realms according to their remaining karma. Ultimate liberation (moksha) is beyond all Devloks and is attained by destroying all karmas.