## whois [![](https://i.imgur.com/0eLJLK5.png)](https://run.ypcloud.com) * payload ``` {"cmd":"whois"} ``` * send ``` DDN:>>sys topic:in://local ``` --- ## on/retevent sample [![](https://i.imgur.com/XG7f5sT.png)](https://run.ypcloud.com) --- <img align="left" height="40" src="https://m3.ypcloud.com/cms/jdi_cards_clouder_cms_6eae937bb7.png"> [Clouder Book](https://hackmd.io/@ypcloud-inc/book) ###### tags: `guide` > [fBuilder User Guide](https://hackmd.io/@ypcloud-inc/fbuilder) > [name=Allen]