One file with another ip-location?

When i do a standard test, from Amsterdam location, in the ‘request details’ I see all files coming from my (2) dutch ip-addresses, as expected.
Only 1 CSS-file has as location a USA-ip-address.

What is happening there?

Same problem here, it’s one or more files but mainly the css or wsobject file… Any ideas?

Update: someone took a closer look for me (ty JP ;-)) and found out that this actually seems to be a bug in the front-end of He submitted this bug to the devs of Webpagetest. Hope they can fix this.