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How to valid IP addresses? In order to help your programming or testing tasks, FYIcenter.com has des...
How to validate Mod 10 (Luhn Algorithm) checksum? In order to help your programming or testing tasks...
How to generate email addresses? To help you to obtain some email addresses for testing purpose, FYI...
How to use HTTP protocol to post an XML message to a server? You can follow this tutorial to post an...
What are date and time test values? Date and time test values are frequently needed in testing date ...