Sender ID registration in South Korea
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 |
|---|---|---|---|---|
| KT Freetel | Required | USD 100 | None | 21 business days |
| LG Telecom | Required | USD 100 | None | 21 business days |
| SK Telecom | Required | USD 100 | None | 21 business days |
Documents required
- Alphanumeric SID generally not supported (overwritten to short/numeric code) - no document-based SID registration. Local: business registration certificate + caller-number pre-registration with proof of number ownership (telecom subscription certificate).
Register your Sender ID
Send us your documents once and we submit to all 3 networks in parallel.
Start registrationLast verified 23 October 2026