Sender ID registration in Japan
Alphanumeric Sender IDs must be registered with each network before traffic is delivered. We handle the submissions for you.
Requirements by network
| Network | Registration | Setup fee | Recurring fee | Lead time |
|---|---|---|---|---|
| KDDI | Required | USD 100 | None | 21 business days |
| NTT | Required | USD 100 | None | 21 business days |
| Rakuten | Required | USD 100 | None | 21 business days |
| SoftBank | Required | USD 100 | None | 21 business days |
Documents required
- No formal SID pre-registration on international routes
- messages containing URLs require pre-registration of SID + URLs (company name, website, sample text). KDDI may require registration.
Register your Sender ID
Send us your documents once and we submit to all 4 networks in parallel.
Start registrationLast verified 23 October 2026