Called a few times in the past couple of days; they have not left a message on voicemail. I looked a few things up on the internet out of curiosity, and this seems to be a number used to solicit donations for the Illinois Special Olympics. Putting "ilso" in google returns one of their websites (soill.org) as topmatch - not listed in the google results at all, but also registered to them (and hosting a mirror of the site), is ilso.org.
It's a Lake Forest number, but I don't see it on their site, so it's likely a contracted call center for fundraising purposes.
I just wish they wouldn't call me at 8:30 at night.
Call came in, and no one spoke when I answered, although you could hear background noise (like a telemarketing center). I can find no information on this, excepting it is a land-based line in Lake Forest, IL.
"(224) 212-9607 is a land line based in Lake Forest, IL
The registered service provider is Ameritech Illinois**.
Detailed listing information is not available."
Took call; no identity offered. Apparently looking for commercial operations only (vs residential). Don't bother calling back with a *67 prefix (to hide your CallerID); you'll be routed to a very long "BS" message. A direct call to the number (w/o *67) will get you nothing more than a loud tone!