492 Old Connecticut Path
Framingham, MA 01701
Telephone: 508-872-0080
Fax: 508-879-6063
Home to:
CIO
CSO
Computerworld
Network World

3 Speen Street
Framingham, MA 01701
Telephone: 508-872-8200
Home to:
IDG Connect
IDG Strategic Marketing Services
IDG List Services
IDG Research Services
IDG Global Solutions

IDG and IDC switchboard number: 508 872-8200.

West Coast

501 Second Street
San Francisco, CA 94108
Telephone: 415-243-4141
Fax: 415-974-7363
Home to:
InfoWorld
Macworld
PC World
GamePro