About the Libraries  > Reference & Instructional Services
 

How do I...?

Find a Telephone Number (US | Colorado | International)

ReferenceUSA - Business / residential; build custom searches based on various information CU

AnyWho (AT&T) - Business / residential

InfoSpace - Business / residential

Switchboard.com - Business / residential; reverse lookup

National Tollfree Directory - Numbers with an 800, 866, 877 or 888 prefix

YellowBook - Business / residential search; reverse lookup

 

DexOnline (Quest) - Business, residential and government search

Google Local - Search for businesses in Colorado (and the US); provides maps, business information and reviews, and directions
State of Colorado Telephone Directory - search for state employees and organizations

-- Consult the US telephone directory sources for more Colorado options

 

AnyWho - Lists available telephone directories by country

Canada 411 - Business, residential and toll-free look-ups in Canada

Infobel World - Links to telephone directories by world region / country

 

CU = Resources marked with this symbol are available in campus libraries and to students, staff, and faculty via the campus network. Use of these resources is subject to copyright laws and license limitations. Remote access information.