Binance upgrades U-based contract WebSocket architecture, the old URL will be taken offline on April 23

Binance announces the upgrade of the U-based contract WebSocket URL architecture to support traffic growth and enhance overall stability and scalability. The new architecture is divided into three specialized base URLs by data category: Public (high-frequency public market data), Market (regular market data), and Private (user data stream).

The new WebSocket URL is available for use starting today, and the old URL will be permanently decommissioned on April 23, 2026. Additionally, this upgrade continues to support both ws and stream access modes and combined subscriptions.