Who is generating an edgesuite.net error message

[Jon Miller via NANOG <nanog () lists nanog org>]

Three of our locations with Cogent Internet service are unable to access a web site.  Three of our non-Cogent locations 
are able to access the site just fine.  We get the error message below, and I don't know enough about this to tell if 
the issue is with Cogent, with a CDN, or with the web server.  Can anyone offer insight?  Here is the error we get:  
You don't have permission to access "http://waf-failover.macys.com/prod/WAF_Failover/WAF_error_page.html?"; on this 
server. Reference #18.5ebc7768.1747925785.aafdbd3 https://errors.edgesuite.net/18.5ebc7768.1747925785.aafdbd3
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