cloud-ip-ranges

UptimeRobot IP ranges

Current IP ranges (CIDRs) used by the UptimeRobot monitoring network, updated daily.

categoryUptime Monitoring
websitehttps://uptimerobot.com
ranges206 (103 IPv4, 103 IPv6)
last change
downloads734
download txt csv json — permalinks, always the latest data 
curl -O https://cloud-ip-ranges.com/download/uptimerobot.txt

Ranges

Sample of 25 of 206 ranges. Download the full list above, or check a specific IP.

CIDR Type
3.12.251.153/32 ipv4
3.20.63.178/32 ipv4
3.77.67.4/32 ipv4
3.79.134.69/32 ipv4
3.105.133.239/32 ipv4
3.105.190.221/32 ipv4
3.133.226.214/32 ipv4
3.149.57.90/32 ipv4
3.212.128.62/32 ipv4
5.161.61.238/32 ipv4
5.161.73.160/32 ipv4
5.161.75.7/32 ipv4
5.161.113.195/32 ipv4
2400:6180:10:200::56a0:b000/128 ipv6
2400:6180:10:200::56a0:c000/128 ipv6
2400:6180:10:200::56a0:e000/128 ipv6
2400:6180:100:d0::94b6:4001/128 ipv6
2400:6180:100:d0::94b6:5001/128 ipv6
2400:6180:100:d0::94b6:7001/128 ipv6
2406:da14:94d:8601:9d0d:7754:bedf:e4f5/128 ipv6
2406:da14:94d:8601:b325:ff58:2bba:7934/128 ipv6
2406:da14:94d:8601:db4b:c5ac:2cbe:9a79/128 ipv6
2406:da1c:9c8:dc02:7ae1:f2ea:ab91:2fde/128 ipv6
2406:da1c:9c8:dc02:7db9:f38b:7b9f:402e/128 ipv6
2406:da1c:9c8:dc02:82b2:f0fd:ee96:579/128 ipv6

Blocking UptimeRobot

iptables

curl -sO https://cloud-ip-ranges.com/download/uptimerobot.txt
while read ip; do
  iptables -A INPUT -s $ip -j DROP
  iptables -A OUTPUT -d $ip -j DROP
done < uptimerobot.txt

ufw

curl -sO https://cloud-ip-ranges.com/download/uptimerobot.txt
while read ip; do
  ufw deny from $ip
  ufw deny to $ip
done < uptimerobot.txt

fail2ban

sudo tee /etc/fail2ban/filter.d/uptimerobot-block.conf << EOF
[Definition]
failregex = ^.*$
ignoreregex =
EOF

sudo tee /etc/fail2ban/jail.d/uptimerobot-block.conf << EOF
[uptimerobot-block]
enabled = true
filter = uptimerobot-block
action = iptables-allports[name=uptimerobot]
logpath = /tmp/uptimerobot.txt
findtime = 1
bantime = -1
maxretry = 1
EOF

curl -so /tmp/uptimerobot.txt https://cloud-ip-ranges.com/download/uptimerobot.txt
sudo systemctl restart fail2ban

pfSense / OPNsense

curl -sO https://cloud-ip-ranges.com/download/uptimerobot.txt
# Firewall > Aliases: new alias UPTIMEROBOT_BLOCK, type Network(s), import the file
# Firewall > Rules > WAN: Action=Block, Source=UPTIMEROBOT_BLOCK

About

These are the addresses UptimeRobot's uptime checks run from, updated regularly from its official list. Most people allowlist them so monitoring isn't rate-limited or blocked by a WAF; the same list also lets you identify UptimeRobot probes in your access logs, or block monitoring you didn't ask for. Last update was 3 months ago.

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