Area Code +91-3664-(600000...699999) located in HAJO, Assam (AS), more detail is as below. Place International Dialing Code : 91 International Prefix : 00 National Prefix : 0 National Destination Code : 3664 Subscriber Number From : 600000 Subscriber Number To : 699999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Tata Teleservices Ltd (TTSL) Click here to buy India Area Code Database Other Information Language Code : hi (Hindi) Country Number : 356 (India) Country Code : IN (India) Region Code : AS Region Name : Assam City : HAJO Timezone : Asia/Kolkata Coordinated Universal Time : +05:30 Daylight Saving Time : No National Significant Number Minimum Length : 10 Latitude : 26.2500 Longitude : 91.5300 ‹ previous : +91-3664-(500000...599999) next › : +91-3664-(710000...719999) Dialling Instructions For trunk calls: 0 3664 600000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 91 3664 600000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 600000 ~ 699999 (Count: 100,000) Example: +91-3664-600000 / 0091-3664-600000 (03664-600000 / 0-3664-600000) +91-3664-600001 / 0091-3664-600001 (03664-600001 / 0-3664-600001) +91-3664-600002 / 0091-3664-600002 (03664-600002 / 0-3664-600002) +91-3664-600003 / 0091-3664-600003 (03664-600003 / 0-3664-600003) +91-3664-600004 / 0091-3664-600004 (03664-600004 / 0-3664-600004) ...+91-3664-xxxxxx / 0091-3664-xxxxxx (03664-xxxxxx / 0-3664-xxxxxx) ...+91-3664-699995 / 0091-3664-699995 (03664-699995 / 0-3664-699995) +91-3664-699996 / 0091-3664-699996 (03664-699996 / 0-3664-699996) +91-3664-699997 / 0091-3664-699997 (03664-699997 / 0-3664-699997) +91-3664-699998 / 0091-3664-699998 (03664-699998 / 0-3664-699998) +91-3664-699999 / 0091-3664-699999 (03664-699999 / 0-3664-699999)