Calling Azerbaijan from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 994 - Country Code for Azerbaijan
• Phone Number (may not begin with 0) - 9 digits
• US to Azerbaijan international dialing format: 011 994 ?? ??? ????

How to dial to Azerbaijan cellular:

• dialing format for calls to a cell phone: 011 994 XX ??? ????
• XX can be: 40, 44, 50, 51, 55, 60, 70 and 77

Area Codes:

Phone Books:

• Yellow Pages Azerbaijan
• RIN Yellow Pages

Updates:

• Azerbaijan telephone numbering changes - August, 2011