Zscaler IP Ranges
Download current IP ranges (CIDRs) for Zscaler cloud infrastructure.
Provider Information
- Official Website
- https://zscaler.com
- Total IP Ranges
- 577
- Last Updated
- Total Downloads
- 489
Download Options
Choose your preferred format. All downloads are permalinks that always provide the latest data.
Usage Examples - Blocking Zscaler IPs
Download the IP ranges
# Download with curl
curl -O https://cloud-ip-ranges.com/download/zscaler.txt
# Or download with wget
wget https://cloud-ip-ranges.com/download/zscaler.txtBlock with iptables (Linux firewall)
# Download and block Zscaler IPs with iptables
wget -O zscaler_ips.txt https://cloud-ip-ranges.com/download/zscaler.txt
while read ip; do
iptables -A INPUT -s $ip -j DROP
iptables -A OUTPUT -d $ip -j DROP
done < zscaler_ips.txtBlock with UFW (Ubuntu/Debian firewall)
# Download and block Zscaler IPs with UFW
wget -O zscaler_ips.txt https://cloud-ip-ranges.com/download/zscaler.txt
while read ip; do
ufw deny from $ip
ufw deny to $ip
done < zscaler_ips.txtBlock with fail2ban (intrusion prevention)
# Create fail2ban filter for Zscaler
sudo tee /etc/fail2ban/filter.d/zscaler-block.conf << EOF
[Definition]
failregex = ^.*$
ignoreregex =
EOF
# Create jail configuration
sudo tee /etc/fail2ban/jail.d/zscaler-block.conf << EOF
[zscaler-block]
enabled = true
filter = zscaler-block
action = iptables-allports[name=zscaler]
logpath = /tmp/zscaler_ips.txt
findtime = 1
bantime = -1
maxretry = 1
EOF
# Download IP list and restart fail2ban
wget -O /tmp/zscaler_ips.txt https://cloud-ip-ranges.com/download/zscaler.txt
sudo systemctl restart fail2banBlock with pfSense/OPNsense (FreeBSD firewall)
# Create alias table for Zscaler IPs
# 1. Download the IP list
wget -O zscaler_ips.txt https://cloud-ip-ranges.com/download/zscaler.txt
# 2. In pfSense/OPNsense web interface:
# - Go to Firewall > Aliases
# - Create new alias named "ZSCALER_BLOCK"
# - Type: Network(s)
# - Import the downloaded file
#
# 3. Create firewall rule:
# - Go to Firewall > Rules > WAN
# - Add rule: Action=Block, Source=ZSCALER_BLOCKAbout Zscaler IP Ranges
These IP ranges are sourced directly from Zscaler's official feeds and are updated regularly to ensure accuracy. The data includes IPv4 and IPv6 ranges used by Zscaler's infrastructure worldwide. Last update was 43 minutes ago.