Area Code +91-9990-(000000...999999) located in Mobile - Delhi Metro Telecom Circle, more detail is as below. Place International Dialing Code : 91 International Prefix : 00 National Prefix : 0 National Destination Code : 9990 Subscriber Number From : 000000 Subscriber Number To : 999999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : Idea Cellular Ltd. Click here to buy India Area Code Database Other Information Language Code : hi (Hindi) Country Number : 356 (India) Country Code : IN (India) City : Mobile - Delhi Metro Telecom Circle Timezone : Asia/Kolkata Coordinated Universal Time : +05:30 Daylight Saving Time : No National Significant Number Minimum Length : 10 Latitude : 28.6300 Longitude : 77.2200 ‹ previous : +91-9989-(000000...999999) next › : +91-9991-(000000...999999) Dialling Instructions For trunk calls: 0 9990 000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 91 9990 000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 000000 ~ 999999 (Count: 1,000,000) Example: +91-9990-000000 / 0091-9990-000000 (09990-000000 / 0-9990-000000) +91-9990-000001 / 0091-9990-000001 (09990-000001 / 0-9990-000001) +91-9990-000002 / 0091-9990-000002 (09990-000002 / 0-9990-000002) +91-9990-000003 / 0091-9990-000003 (09990-000003 / 0-9990-000003) +91-9990-000004 / 0091-9990-000004 (09990-000004 / 0-9990-000004) ...+91-9990-xxxxxx / 0091-9990-xxxxxx (09990-xxxxxx / 0-9990-xxxxxx) ...+91-9990-999995 / 0091-9990-999995 (09990-999995 / 0-9990-999995) +91-9990-999996 / 0091-9990-999996 (09990-999996 / 0-9990-999996) +91-9990-999997 / 0091-9990-999997 (09990-999997 / 0-9990-999997) +91-9990-999998 / 0091-9990-999998 (09990-999998 / 0-9990-999998) +91-9990-999999 / 0091-9990-999999 (09990-999999 / 0-9990-999999)