Sent a note to Dave Wheeler to check on XSEDEnet status. Note from Dave Wheeler below.
From: Wheeler, David <email@example.com>
Sent: Tuesday, July 14, 2020 12:38 PM
To: Hazlewood, Victor <firstname.lastname@example.org>
Cc: Samuel, Tabitha Kripa <email@example.com>; Wheeler, David <firstname.lastname@example.org>
Subject: Re: Annual SP checklist review and XSEDEnet
I can confirm that those centers SDSC, PSC, TACC and IU all connect to XSEDEnet. What they do to announce prefixes correctly into XSEDEnet is up to those centers since that is their internal responsibility.
I hope this answers your question.