# Whitelist Zoom URL for Event Subscription **URL:** \ **Category:** App Marketplace\ **Created:** [March 20, 2020, 5:53am UTC](https://devforum.zoom.us/t/whitelist-zoom-url-for-event-subscription/9053 "2020-03-20T05:53:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![heidi.zh.n](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/heidi.zh.n/32/2906_2.png) [@heidi.zh.n](https://devforum.zoom.us/u/heidi.zh.n)\ **Post date:** [March 20, 2020, 5:53am UTC](https://devforum.zoom.us/t/whitelist-zoom-url-for-event-subscription/9053/1 "2020-03-20T05:53:26Z")
We want to whitelist the Zoom URLs that posts the events to our endpoints. I understand that the Zoom domain name is not exposed in the requests, I can only whitelist an IP address. Could you provide more details? For example, 1. How can know the IP address in advance so we can configure our network setting? 2. Is this IP address fixed or dynamically changed? 3. Currently, I am using test account for proof of concept work. If I changed to different account, will this IP address be changed? 4. Please provide other details not covered by above. ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [March 20, 2020, 4:20pm UTC](https://devforum.zoom.us/t/whitelist-zoom-url-for-event-subscription/9053/2 "2020-03-20T16:20:28Z")
Hey @heidi.zh.n, I will private message you the IP Addresses. The best way to validate the webhooks is with the verification token. Thanks, Tommy ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 7:34pm UTC](https://devforum.zoom.us/t/whitelist-zoom-url-for-event-subscription/9053/3 "2020-08-21T19:34:23Z")
Closed on August 21, 2020, 7:34pm UTC