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Country flag of Vietnam blue arrow Country flag of United States

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 17:43:03 PM (05:43:03 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 511-540 (of 583)
Oklahoma Cities City Code
Talihina 918
Taloga 580
Tatums 580
Tecumseh 405
Temple 580
Terlton 918
Terral 580
Texhoma 580
Texola 580
Thackerville 580
Thomas 580
Tinker Afb 405
Tipton 580
Tishomingo 580
Tonkawa 580
Tryon 918
Tulsa 539 or 918
Tupelo 580
Turpin 580
Tuskahoma 918
Tussy 580
Tuttle 405
Twin Oaks 918
Tyrone 580
Union City 405
Valliant 580
Velma 580
Vera 918
Verden 405
Vian 918
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We hope Country Calling Codes has helped you make your international call from Vietnam to the state of Oklahoma, United States. Why not bookmark this page, then tell a friend how easy it is to find international country codes and area codes at!

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