Zoom uses 3 prefixes for ZoomCDN.
Short answer
ZoomCDN lists the content delivery ranges Zoom serves downloads and assets from.
Prefixes
What changed
No prefixes added or removed since we started tracking this list. Changes appear here the day after the provider publishes them.
Allowlist formats
nginx (first 3 prefixes)
allow 170.114.45.0/24; allow 170.114.46.0/24; allow 52.84.151.0/24; deny all;
iptables (first 3 prefixes)
iptables -A INPUT -s 170.114.45.0/24 -j ACCEPT iptables -A INPUT -s 170.114.46.0/24 -j ACCEPT iptables -A INPUT -s 52.84.151.0/24 -j ACCEPT
Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.
Sources
- Zoom: published IP ranges · checked 5 Nov 2026
- Zoom documentation