I found this while trying to see if there was an outage for my girlfriend over in Arizona, but I thought it might be helpful for those of us who've modified our PRLs to a Sprint PRL, since we aren't able to roam. I'm not sure if it's the same thing that Virgin Mobile's website shows, but it was last updated May 2011.
Support - Article
Link is to a coverage map showing the non-roaming coverage for those "older" singleband phones or plans that don't include roaming.
Support - Article
Link is to a coverage map showing the non-roaming coverage for those "older" singleband phones or plans that don't include roaming.