02584 area code — Nagaoka
02584 is the telephone area code for Nagaoka in Japan. It falls within Niigata. Numbers are written internationally as +81 2584.
How to call Nagaoka
- From abroad
- +81 2584 XXX XXXX
- Within Japan
- 02584 XXX XXXX
- Country calling code
- +81
About the 02584 area code
Dialed within Japan as 02584, this code is written internationally as +81 2584 followed by the subscriber's local number.
Area codes like 02584 tie a phone number to a place — useful for knowing where a call or message originates, and for signing up to services that expect a local Japan number. To actually receive an SMS on a Japan number, a temporary or virtual line does the job without exposing your own SIM.
Frequently asked questions
What area code is Nagaoka?
Nagaoka uses the area code 02584, written internationally as +81 2584.
How do I call Nagaoka from another country?
Dial your international access code, then +81 2584, then the local number — dropping the national leading 0.
What time is it in Nagaoka?
Nagaoka is in the Asia/Tokyo time zone; the live clock above shows the current local time.
Is 02584 a mobile or a landline code?
02584 is a geographic (landline) area code for Nagaoka. Mobile numbers in Japan use their own separate prefixes.