Is there a 710 area code in California?

Nope. From Wikipedia: Area code 710 is a special area code, reserved to the federal government of the United States in 1983.

What area code is 701 belong to?

State of North Dakota Area code 701 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. State of North Dakota. It is one of the 86 original area codes created by AT&T in 1947, and continues to be the only area code in North Dakota, and one of eleven states with only one area code.

What city has area code?

Area Code Listing, by Number
Area Code Region Description
212 NY New York City, New York (Manhattan; see ovelays 332, 646, 917; split 718)
213 CA S California: Los Angeles (see 310, 323, 626, 818)
214 TX Texas: Dallas Metro (overlays 469/972)
215 PA SE Pennsylvania: Philadelphia (see overlays 267)