Hi @jcritch ,
Have you tried this resource: https://support.zoom.us/hc/en-us/articles/201362683-Zoom-network-firewall-or-proxy-server-settings? To your point, I do not see 52.202.62.237 and 52.202.62.238 on this list so I will see if this is the most up to date and relevant information.
Gianni