A Japan number gives your business a local presence with country code +81. Inside Japan, callers dial the trunk prefix 0 before the area code. From abroad, callers dial +81 and drop the 0.
Number types in Japan
- Local numbersGeographic numbers with a city or regional area code. Customers see a familiar local number and call you at local rates.
- National numbersNon-geographic numbers that work nationwide without tying you to one city — ideal for a single number across the whole country.
- Mobile numbersNumbers from mobile ranges, for services that need a mobile-looking number. SMS capability depends on the range.
- Toll-free numbersFree for your callers from most networks. You cover the inbound cost, which lowers the barrier for sales and support calls.
Local numbers by city
- Tokyo 03
- Kamogawa 04
- Osaka 06
- Akita 018
- Aomori 017
- Atsugi 046
- Chiba 043
- Fukuoka 092
- Fukushima 024
- Gifu 058
- Hamamatsu 053
- Hiroshima 082
- Ichikawa 047
- Joetsu 025
- Kagoshima 099
- Kakogawa 079
- Kanazawa 076
- Kawagoe 049
- Kawasaki 044
- Kitakyushu 093
- Kobe 078
- Kofu 055
- Kumamoto 096
- Kyoto 075
- Maebashi 027
- Matsuyama 089
- Mito 029
- Morioka 019
- Nagano 026
- Nagasaki 095
- Nagoya 052
- Naha 098
- Neyagawa 072
- Oita 097
- Onomichi 084
- Otsu 077
- Sagamihara 042
- Sapporo 011
- Sendai 022
- Seto 086
National prefixes
Toll-free prefixes
Japan numbering at a glance
| Country code | +81 |
|---|---|
| Trunk prefix | 0 |
| International call prefix | 010 |
| Geographic number length | 9 digits after the country code |
| Mobile number length | 10 digits |
| Example landline format | +81 3-1234-5678 |
| Number types in the plan | Local, national, mobile and toll-free |
| Capital | Tokyo |
| Official languages | Japanese |
| Currency | JPY |
| Time zone | Asia/Tokyo |
What you get with every Japan number
- Delivery to your SIP trunk, IP-PBX, Microsoft Teams (Direct Routing), softphone or any mobile number
- Time-of-day routing, failover destinations and simultaneous ring
- Real-time call records and usage in the customer portal
- Number porting in and out, where the Japan regulator allows it
Requirements for Japan numbers
Some Japan number ranges require proof of a business or residential address, or company registration documents. You will see exactly what is needed for the number you choose before you pay, and you can upload documents in the portal. How verification works.
Frequently asked questions
Can I get a Japan number if my business is based elsewhere?
Often, yes. Many Japan ranges are available to international businesses; others need a local address. The requirement is shown on each number before checkout.
How do people abroad call a Japan number?
They dial their international access code (or + on a mobile), then 81, then the number without the leading 0. For example: +81 3-1234-5678.
Can I move my existing Japan number to you?
In most cases, yes. Contact sales with the number and current provider and we will confirm portability and timing.
Which Japan cities can I get a local number in?
We list local area codes for 40 Japan cities and regions, including Tokyo, Kamogawa, Osaka, Akita, Aomori and Atsugi. Live stock is shown on each city page.