HupSMS

HupSMS is an online service platform that provides virtual phone numbers and related digital tools. Its services include renting SIM numbers to receive OTP verification codes from more than 2,000 services, including Facebook, Google, Telegram, and Shopee; renting numbers to send SMS; and obtaining new numbers for creating Zalo accounts. The platform also sells Vietnamese and international proxies, with static and rotating IP options, and vouchers for opening MB Bank accounts with preferred number choices.

HupSMS operates automatically around the clock. Customers can register, add funds by bank transfer or cryptocurrency, and select services through the website. The platform states that it automatically refunds balances when a rented number does not receive a code or a service encounters an issue. It also offers API documentation for integrating number rental, OTP checking, SMS, and proxy management into software. Customer support is available through Telegram and live chat, as well as by email from 8 a.m. to 10 p.m. HupSMS publishes guides and articles on OTP, account security, and its services.