I don't know about you, but it really annoys me when the service says that it has a free trial, but asks for my card number. Just in case. Hoping, probably, that I will forget the expiration date of the trial, and I will be charged a month or a year of the subscription fee. A subscription fee for a service that I could have already forgotten about. By the way, this has happened to me more than once.
So I didn't find a better way to try paid services than to enter fake credit card numbers.
Just entering the left 16 digits is not an option, since all the digits mean something - country, bank, etc. and should more or less be according to the rules. So I recommend using the GetCreditCardNumbers service.
You just need to choose which type of card you want to enter: Visa, MasterCard, American Express and Discover and copy one of the numbers from the main page of the service for yourself. Every reboot you get a new batch of numbers.
If you need a block of numbers for some other purpose, the service can give you them in JSON.
The service also has an Android application.
