257 Area Code
Kashiwazaki, Niigata · Japan
Country code +81 · ISO JP
Example 257 Number
A sample number from this area code, formatted three ways.
| National | International | E.164 |
|---|---|---|
| 0257-24-5678 | +81 257-24-5678 | +81257245678 |
Try it now
Pre-filled with a 257 sample number. Edit it and click "Try It" to see the parsed result.
Locations
Google's libphonenumber lists these locations for the 257 area code.
- · Kashiwazaki, Niigata
How to Dial Japan Numbers
From abroad
Dial +81 followed by the national number, dropping any leading 0.
Within Japan
Dial 0 before the local number to make a domestic call.
Dialing out of Japan
Dial 010 followed by the destination country code and number.
Frequently Asked Questions
Where is the 257 area code?
└ The 257 area code covers Kashiwazaki, Niigata in Japan.
How do I dial a 257 number?
└ From abroad, dial +81 257 followed by the local number. Within Japan, dial 0257 before the local number.