Country code +966 (dialed as 00 966 from many places) is for Saudi Arabia.
Area codes:
+966 1 : Riyadh
+966 2 : Mecca, Jeddah, Taif, Rabigh
+966 3 : Qatif, Dammam, Dhahran, Hafar Al-Batin, Eastern Province
+966 4 : Medina, Tabuk, Al-Jawf, Yanbu, Turaif, Skaka, Northern Borders Region
+966 5 : mobiles
+966 6 : Al-Qassim, Buraidah, Majma, Hail
+966 7 : Asir, Al-Baha, Jizan, Najran, Khamis Mushait
+966 8111 : WiMAX lines served by Atheeb GO Telecom (Etihad)
(The plus signmeans "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
'00' is not part of the country code, it is a commonly used international access prefix. Country code +966 is Saudi Arabia, and +966 2 is a landline in Mecca, Jedda, Taif, or Rabigh.
Telephone country code +966 is Saudi Arabia. A number beginning with +966 5 is a mobile phone from Saudi Arabia.
Country code +966 is Saudi Arabia, and +966 59 is a Zain mobile number.
Country code +966 is Saudi Arabia.
The prefix for international calls from Kuwait to other countries is 00. For example, telephone country code +966 for Saudi Arabia would be dialed 00 966.
Country code +969 is currently unassigned.
The UK Dialling Code 0916 is reserved for premium rate operators. It is not a geographical area. US area code 916 (not 0916) is Sacramento, California. Other countries may have a domestic telephone area code 0916 or similar. Telephone country code +91 is India.
The country code 966 is Saudi Arabia.
The country code and area code of D.I.Khan, Pakistan is 92, (0)966.
The country code and area code of Arriaga, Mexico is 52, (01)966.
The country code and area code of Makkah, Saudi Arabia is 966, (0)2.
Leichtenstein is telephone country code +423.
The country code and area code of Ashikita District- Kumamoto, Japan is 81, (0)966.