It could be the Alumni network reaching out to alumni or checking to confirm whether the numbers are for a specific alum. Just an idea! But agree - number originates on Cornell campus.
Yes, It's Cornell and they're begging for money from strangers on the phone. See this web page
http://www.alumni.cornell.edu/fund/bigred/numbers.cfm
where they list all the numbers they call from. Thanks to that, I can now block all their numbers!