What is is an excellent free service that allows you to receive SMS online. We provide SMS numbers in over 10 countries and continue to expand our reach. By using, you can protect yourself from any company or spam that may attempt to steal your personal information. We offer fully free and disposable mobile phone numbers, enabling integration with services such as Twitter, Google, Facebook, and Instagram. provides a robust solution for online security and privacy protection. Instead of providing your actual mobile phone number during account registration or verification, you can use the temporary number provided by our service, reducing the risk of personal information leakage. Additionally, the disposable numbers from help to avoid unwanted spam and advertising messages.

With its user-friendly platform and extensive international coverage, is widely utilized by users around the world. Users are free to select countries and utilize different numbers as needed. Balancing security and convenience, is highly praised by many users as an excellent tool that supports privacy protection and security enhancement in online activities.

Visitors of

We have a track record of providing phone numbers to a large number of users, mainly in the Asian region, over the past 5 years.
We will continue to provide freedom on the internet to everyone through our disposable phone number service.

Is this site FREE?

Absolutely yes, this site is eternally free of charge.

Since this service is maintained ONLY for academic purposes, there are completely no systems to receive charges from you.
We are keeping this site available only by advertising income and all advertising revenue will be used for adding new phone numbers.

NOTICE was based in Shanghai, China, from 2019 to 2023, and since 2023, it has been headquartered in Hong Kong, operating the service in accordance with Hong Kong laws.
Therefore, users and volunteers are required to comply with Hong Kong laws when using our service.

Who we are

about us

We are a team of 4 people including graduates of Shanghai Jiao Tong University. We are made up of American, Indian, and Chinese.
We are researching the scalability of mobile phone networks and this project is part of that research.

We anonymize all data and use it for statistical purposes, but we do not completely care about the contents.

To see more information about this service, please click here.

Technologies we use:

We are using both of modern and old-fashioned programming technologies like Golang, Java, C++ and JavaScript.

To obtain all messages we receive on phone numbers we manage, we are using virtual phone technology, which is we call VPT.
A server that collectively manages virtuals phones receives all incoming messages and these messages are formatted and added to MySQL Server running on another server we manage, to show them on this website.

This system has 3 merits for us:

  • Extremely easy to add another phone number.
  • Completely automatized processes through all procedures.
  • Get people all over the world to use our services.

This services is literally "Killing two birds with one stone" -- We obtain data we need to progress research further and all users will be happy to use free phone numbers!

Our goal

1. We are researching entirely new personal authentication infrastructures that replace traditional SMS authentication.
With this project, we are looking for the vulnerability of traditional SMS authentication and forming the basis of a new personal authentication systems.

2. We are conducting researches to improve the comprehensiveness of mobile networks.
By making everyone use our services, we are looking for clues to improve the network availability and load tolerance of mobile networks.