The domain names example.com, example.net, example.org, and example.edu are second-level domain names in the Domain Name System of the Internet.They are reserved by the Internet Assigned Numbers Authority (IANA) at the direction of the Internet Engineering Task Force (IETF) as special-use domain names for documentation purposes. The domain names are used widely in books, tutorials, sample ... Oct 13, 2021 · Example. This example demonstrates how to support pre-flight requests, such as those with custom headers or methods other than GET and POST. To support custom headers and additional HTTP verbs, use the allowed-methods and allowed-headers sections as shown in the following example.