South Korea (+82) Country Calling Code & SMS Guide
Complete engineering reference for phone numbering formats, domestic trunk prefixes, cellular mobile operator allocations, and regulatory A2P SMS requirements in South Korea.
Telephony Architecture & Carrier Allocations
A2P Messaging Regulations & Firewall Policies
Not applicable. Regulated by Korea Communications Commission (KCC) and KISA.
Unsupported. Korean regulations mandate numeric caller ID pre-registered with carriers to combat voice and SMS phishing.
Supported using Korean virtual mobile numbers.
UCS-2 required for Korean Hangul text (70 characters/segment). Standard GSM-7 for ASCII.
Test a South Korea Number Now
Check if a South Korea phone number conforms to the national numbering plan, classify mobile vs VoIP allocation, and obtain canonical E.164 standardization.
Frequently Asked Questions for South Korea
What is the international calling code for South Korea?
South Korea's country calling code is +82. Domestic mobile numbers start with 010, which becomes +8210 in international E.164 format.
What is the mandatory prefix for promotional SMS in South Korea?
Under KISA anti-spam regulations, all promotional text messages must start with '(광고)' and include clear sender identification and a toll-free unsubscribe number.