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Port your number in South Korea

Looking to switch carriers in South Korea? This guide covers the essential regulations and procedures for keeping your number while moving between SK Telecom, KT and LG Uplus.

Technical Porting Process

1

Authorization & Submission

Recipient-led; donor sends validation SMS/link to user for confirmation; daily 10:00–20:00 (excl. Sun/Holidays)

2

Centralized Validation

The migration is overseen by KCC (Korea Communications Commission) / KTOA using the Centralized DB; real-time routing updates to all carriers to ensure integrity between donor and recipient networks.

Regulatory Benchmarks

Mobile Porting SLA

Technical porting completion in minutes after confirmation; donor release timeout 60-120s

Max Service Outage

Minimal

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Expert Guidance

Operational window is strict (10:00–20:00); KTOA manages a highly automated central system.

Common Questions

Is number porting possible in South Korea?
Yes, South Korea currently has Y status for number portability, covering Mobile (nationwide); Fixed portability also supported services.
How long will I be without service during the switch?
The maximum allowed service interruption is typically , with the total process usually taking Technical porting completion in minutes after confirmation; donor release timeout 60-120s.

Verified Intelligence Sources