Calling Comoros from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 269 - Country Code for Comoros
• Phone Number - 7 digits, landlines start with 75 or 77
• US to Comoros international dialing format: 011 269 ??? ????

How to dial to Comoros cellular:

• dialing format for calls to a cell phone: 011 269 XY? ????
• the initial digit(s) XY for mobile numbers can be 3, 4, 74 or 76 (the latter 2 are for fixed CDMA)

Phone Books:

• Yellow Pages of Africa