인증 번호가 · 인증 번호를
verification code (sent by text)
Example
문자로 받은 인증 번호 여섯 자리를 입력하세요.
Enter the six-digit verification code you received by text.
Word parts
인 recognize+증 proof+번 turn, number+호 sign, number
인증 'verification' (literally 'recognize and prove') + 번호 'number'.
Good to know
Sign-ups and payments in Korea often need 휴대폰 인증 'phone verification': you get a code by text and must enter it within a few minutes.
Related words