Campus Telephone Prefixes

Campus Telephone Prefixes

Colorado State University telephones are assigned within the following range of telephone prefixes. Dial only the last five digits (7+xxxx, 1+xxxx, 2+xxxx, 5+xxx) when calling from within the campus.

All telephone numbers are in the 970 area code.

Prefix Telephone Assignment
297 0300-0399 Faculty/Staff
297 1200-1299 Faculty/Staff
297 3600-3799 Faculty/Staff
297 4000-4599 Faculty/Staff
297 5000-5999 Faculty/Staff
491 0000-8999 Faculty/Staff
492 4000-4999 Faculty/Staff
492 8000-8999 Reserved
492 9000-9999 Apartments
495 2000-2999 Residence Halls
495 3500-4499 Residence Halls
495 5000-6199 Residence Halls
Modified: 3/7/2012 10:30:51 AM