2FA

2FA. cn is an online resource focused on two-factor authentication tools and account security. Its main offering is a free TOTP generator that creates time-based one-time authentication codes from a supplied 2FA secret, helping users complete sign-ins and verification on services with two-factor authentication enabled.

The generator is presented as compatible with Google Authenticator, Microsoft Authenticator, Authy, Binance, GitHub, Discord, Telegram, X, and other supported services. Users can submit a secret, view the resulting code, and copy it for use before it expires. The site also provides information about using online 2FA tools and points visitors toward authoritative resources for learning more about two-factor authentication.

Beyond authentication, 2FA. cn’s navigation lists other practical online services, including an IP proxy offering, a temporary email service, a live Facebook UID checker, and a directory of tools for international business. A Chinese-language version and a frequently asked questions section are also available.

Overall, 2FA. cn brings together a straightforward OTP generator and a small collection of web-based utilities