Possibly. Some manuscripts count the 4 "Uvacha" (introductory) verses as names. A standard, high-quality critical edition has exactly 300 names + 1 Dhyana sloka.
In this article, we explore the significance of the Rudra Trishati, its benefits, and how to identify a premium digital edition for your daily practice. What is the Rudra Trishati?
It is traditionally recited to seek protection from negative energies and ailments.