***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: May 30, 2017 NOTICE TYPE: M-B052417-02 Planned Maintenance SHORT DESCRIPTION: Reminder - Implementation of Web Application DNS changes INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: May 31, 2017 17:30 and 20:30 LONG DESCRIPTION: ERCOT is implementing changes to the Domain Name System (DNS) resource names indicated below. As a result IP addresses are subject to change without notice. Therefore, Fully Qualified Domain Names (FQDNs) must be used to reference ERCOT resources instead of hard-coded IP addresses. The following URLs are affected by this change: Site (URL) Fully Qualified Domain Name (FQDN) Current IP Address To-Be IP Address Flight Testing Website (https://etod.ercot.com/) etod.ercot.com<https://etod.ercot.com/> 66.128.16.172 192.230.66.59 Renewable Energy Credit (REC) Program (https://urldefense.proofpoint.com/v2/url?u=https-3A__www.texasrenewables.com_&d=DwIFAg&c=trp9rTvIdyEWh1VWB5x8_2JiPaB5oGZOtWPDws2_VoY&r=nfPtykJirh6zkdj_SUrDhWk1u9ovsm1QJE50kwBFuP37cvRuStOq93TVB47vcl5Q&m=b5_14CPrUWNR5efx5g9vqKx0EBNLh_w1ntASid0sZ74&s=iA4BpPamvIe8JGinOUeTKXTF_xne7HadCmgA5urh7jQ&e= ) www.texasrenewables.com<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.texasrenewables.com_&d=DwIFAg&c=trp9rTvIdyEWh1VWB5x8_2JiPaB5oGZOtWPDws2_VoY&r=nfPtykJirh6zkdj_SUrDhWk1u9ovsm1QJE50kwBFuP37cvRuStOq93TVB47vcl5Q&m=b5_14CPrUWNR5efx5g9vqKx0EBNLh_w1ntASid0sZ74&s=iA4BpPamvIe8JGinOUeTKXTF_xne7HadCmgA5urh7jQ&e= > 66.128.16.171 192.230.66.101 Market Participants (MPs) are encouraged to ensure their whitelists include the FQDN to avoid any interruption of service. The changes will be implemented between the hours of 17:30 and 20:30 on May 31, 2017. Based on MP configurations users may experience an outage of up to 30 minutes if attempting to access these sites during the change window. ADDITIONAL INFORMATION: For issues connecting to the website, it is recommended that MPs: ********* Clear their browser history. ********* Restart their browsers. ********* Contact the ERCOT Help Desk by phone at (512) 248-6800 or via email at [log in to unmask] if an error message is received stating "Access Denied, Powered by Incapsula". 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]<mailto:[log in to unmask]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com. sa ######################################################################## To unsubscribe from the NOTICE_OUTAGES_RETAIL list, click the following link: http://lists.ercot.com/scripts/wa-ERCOT.exe?SUBED1=NOTICE_OUTAGES_RETAIL&A=1