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How to call Oklahoma, United States from Vietnam
Dial the following international dialing codes:


   00 + 1 + City Code + Local Number



  

How to make your international call How to call Oklahoma in United States from Vietnam:

00 - Exit code when making an international call from Vietnam
1 - US country code for inbound calls
00 + 1 + City Code + Local Number - International dialing code format

World time zone information World time zone information:

The time in Vietnam is now 19:33:06 PM (07:33:06 PM)
The time in Oklahoma United States is now (CLICK FOR TIME ZONES)

Calling cards Save on your call:



Mobile Country Codes Mobile codes:

To call a mobile phone in United States from Vietnam use the following dialing code format: 00 + 1 + The Number
Click here to search for another mobile country code.


The Oklahoma, United States area code chart below gives you the necessary information for calling Oklahoma cities. For international dialing instructions to Oklahoma, United States, use our drop down boxes at the top of this page or check out our easy-to-use country code search tool.
 
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Area Codes 1-30 (of 583)
Oklahoma Cities City Code
Achille 580
Ada 580
Adair 918
Adams 580
Addington 580
Afton 918
Agra 918
Albany 580
Albert 405
Albion 918
Alderson 918
Alex 405
Aline 580
Allen 580
Altus 580
Altus Afb 580
Alva 580
Amber 405
Ames 580
Amorita 580
Anadarko 405 or 580
Antlers 405 or 580
Apache 580
Arapaho 580
Arcadia 405
Ardmore 580
Arkoma 918
Arnett 580
Asher 405
Atoka 580
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