OKX WebSocket Port 8443 Discontinuation Announcement

Published on Sep 30, 20262 min read

Dear OKX API users,

To support a network infrastructure upgrade, OKX will stop accepting WebSocket connections on port 8443, including Colo connections:

  • Public internet: October 31, 2026

  • Colo: November 16, 2026

What's changing

Port 443 already works on all affected domains, including Colo, and both ports remain available until these dates. After these dates, connections to port 8443 will fail. This is a breaking change.

Affected domains

  • Public internet, production: ws.okx.com, wseea.okx.com, wsus.okx.com

  • Public internet, demo trading: wspap.okx.com, wseeapap.okx.com, wsuspap.okx.com

  • Colo: all Colo WebSocket connections

This applies to every path, including /ws/v5/public, /ws/v5/private, /ws/v5/business and, on the Global site, /ws/v5/public-sbe.

Action required

Remove :8443 from your WebSocket URLs before October 31, 2026 (Colo: before November 16, 2026). Only the port changes; the host and path stay the same. wss:// uses port 443 by default, and :443 also works.

  • Before: wss://ws.okx.com:8443/ws/v5/public

  • After: wss://ws.okx.com/ws/v5/public

What's not affected

  • REST API

Full technical details are in the API changelog for your region:

Disclaimer

Digital Assets subject to volatility and not insured. Not financial/investment advice. Not all products and services offered in all regions. Exclusions and T&Cs apply.
This content may cover products that are not available in your region. It is not (i) investment advice or recommendations; (ii) an offer or solicitation to buy, sell, or hold digital assets, or (iii) financial, accounting, legal, or tax advice. Digital asset holdings, including stablecoins and NFTs, involve high risk, can fluctuate greatly, and are not FDIC insured. You should consider whether trading or holding crypto/digital assets is suitable for you and consult your advisors for questions about your circumstances. While reasonable care has been taken in preparing informational data and graphs, no responsibility or liability is accepted for any errors or omissions.
Certain cryptocurrencies, services, and products are not available to users located in the United States and may be restricted depending on the state in which you reside. See OKX's US Risk & Compliance Disclosures for more information. OKX INC. ("OKX US") operates under the OKX brand and is a federally registered money service business and a state licensed money transmitter (NMLS ID: 1767779). Users of OKX US are subject to the restrictions and terms contained in the U.S. Terms of Service. Foreign entities affiliated with OKX US use the OKX brand to offer services and products to non-US users. US users are expressly prohibited from accessing any of those foreign products and services.