AirVPN performs an open source client under the GPL license for Windows, Mac OS X and Linux. After you log in to the app, you are given the choice to connect to a recommended random server in the overview tab or select one from the Servers tab at the top of the application. There is a Countries tab as well, where you can white list or blacklist certain countries.
Most are from Europe, a few from Asia, and of course North America U.S. and Canada. Now, AirVPN does not seem to have servers in the Middle East, Central or South America. This can be useful, for instance, if you never want to randomly connect to a server in some of those countries.
There’s also a Speed tab, where you can see a real time graph of how much bandwidth you are getting at any given time, a Stats tab and a Logs tab, which shows what kind of actions AirVPN is taking in your PC.
In the top-left corner, when you click on the AirVPN name, you also get a menu with links that seem to open only in Internet Explorer, as well as a Preferences option, where you can further customize your connection settings.
The company has been using 2048-bit DH primes since its birth in 2010. Then it switched to 4096 bit primes in 2014. It also did not use the same default primes millions of other sites and services used, which made them most vulnerable to LogJam.
AirVPN’s website gets an A+ on Qualys’ SSL Labs test, which once again shows the company’s commitment to using best-in-class cryptographic protocols. Users would probably be less likely to trust a VPN service that does not even use HTTPS for its website, for example, which is why care for such things matters.
AirVPN looks like a solid VPN service, particularly if what you care most about is security and privacy. The latency between U.S. and Europe is not that great, so you probably should not game competitively over the VPN service, but for browsing the Web or watching streaming video, it should work quite well.