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NOTICE DATE: May 20, 2021

NOTICE TYPE: M-A051221-02 Operations

SHORT DESCRIPTION: Reminder - New IP Addresses for Inbound Production NAESB URL

INTENDED AUDIENCE: All Market Participants 

DAYS AFFECTED: Sunday, May 30, 2021 from 09:00

LONG DESCRIPTION:  To improve the security of ERCOT's North American Energy Standards Board (NAESB) Electronic Delivery Mechanism (EDM), ERCOT is placing inbound NAESB traffic behind a Web Application Firewall (WAF) beginning on 5/30/2020 at 09:00.


All Market Participants that transmit files via NAESB must ensure their systems can send to the new IP addresses.

The specific changes to the services are listed below:


https://naesb.ercot.com:7403/ipnet/naesb - no change

IP Configurations

New Public IP Addresses

Inbound to ERCOT (naesb.ercot.com) could be any of the following subnet ranges:


Port (no change) – 7403

Former Public IP Addresses Inbound to ERCOT (naesb.ercot.com) - and

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask].

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