Japan
| Sender ID | Alpha numeric, numeric (For KDDI, overwritten to either Shortcode or Longcode) |
| Dialing code | 81 |
| Major Carriers | KDDI, Softbank, NTT DOCOMO, Rakuten Mobile |
| Message length | 160 characters |
| Support for Concatenated message | Supported |
| Setup time | - |
| Support for Two Way SMS | Yes (Long Code and Short Code) |
| Country Regulations | KDDI will prepend additional 2-3 numeric characters for International Numeric Sender ID |
| Country Restrictions |
The following types of messaging on all SMS messaging products are all prohibited:
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Industry Reference:
Information and Communication Policy Site
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