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South Korea: SMS delivery facts

SMS delivery to South Korea uses calling code +82. Sender IDs for bulk messaging require pre-registration under the KISA regime, which runs the carrier verification system. Korean Hangul forces UCS-2 encoding, yielding 70-character single segments or 67 when concatenated.

Country calling code+82 (ITU-T E.164 assigned country codes, retrieved 2026-07-27)
E.164 format+82 followed by the national subscriber number, no leading trunk zero, 15 digits maximum overall (ITU-T E.164)
Alphanumeric sender IDpre registration (per KISA sender number pre-registration requirement, retrieved 2026-07-26)
Registration regimeKISA
Dominant language(s)Korean
Native-text charsetUCS-2 — 70 characters per single SMS, 67 per concatenated segment (GSM 03.38 default alphabet vs script analysis, retrieved 2026-07-27)
Published smsroute rateUSD 0.045 per message, dated snapshot (source, retrieved 2026-07-27). Current rate and send path: rate card for South Korea

Sender-ID rules

Sender numbers/IDs used for bulk messaging must be pre-registered; KISA operates the sender number verification system used by carriers. (per KISA sender number pre-registration requirement, verified 2026-07-26)

Sender numbers and IDs used for bulk messaging must be pre-registered; KISA operates the sender number verification system used by carriers. Hangul forces UCS-2. This produces segment lengths of 70 characters single and 67 concatenated.

Character set and message length

Native Korean text is classed as UCS-2 here: 70 characters fit a single SMS and 67 per segment once a message is concatenated.

Hangul forces UCS-2.

To count segments for a concrete message, use the UDH segment surgeon; to compare all 40 countries side by side, the country requirements explorer reads the same open dataset (CC-BY 4.0).

Frequently asked

Do sender IDs need pre-registration for South Korea SMS?
Yes. Sender numbers/IDs used for bulk messaging must be pre-registered; KISA operates the sender number verification system used by carriers.
What charset and segment sizes apply to SMS in South Korea?
Hangul forces UCS-2, so single segments hold 70 characters and concatenated segments hold 67.
What is the calling code and published SMS rate for South Korea?
The calling code is +82. The published rate is 0.045 USD (retrieved 2026-07-27).

Related

Facts on this page are dated snapshots with named sources; rates change — the linked rate card is authoritative. Corrections: ops@smsroute.cc. Last verified 2026-07-27.