Locations and IPs.

Q: How to Add an IP Address to the Allow List:

Open Windows Defender Firewall with Advanced Security . Click on Inbound Rules New Rule . Select Custom for the Rule Type and click Next . In the Scope tab, under Remote IP address , select These IP addresses and click Add . Enter our monitoring IP addresses and click OK . Complete the wizard to create the rule. Official Documentation: Microsoft Docs - Configure Windows Defender Firewall

Q: How to Allow an IP Address:

Open your terminal. Run the command: sudo ufw allow from [IP_ADDRESS] Reload UFW to apply changes: sudo ufw reload Official Documentation: Ubuntu Community Help - UFW

Q: How to Create an Access Rule:

Log in to the Cisco ASDM or CLI. Navigate to Configuration > Firewall > Access Rules . Add a new rule permitting traffic from our monitoring IPs to your server. Apply and save the configuration. Official Documentation: Cisco ASA Series Firewall CLI Configuration Guides

Q: How to Create a Security Policy Rule:

Log in to the Palo Alto Networks web interface. Go to Policies > Security . Click Add to create a new rule. In the Source tab, add our monitoring IPs. Define the necessary parameters and click OK . Commit the changes. Official Documentation: Palo Alto Networks - Security Policy

Q: How to Add an Address and Policy:

Log in to the FortiGate web interface. Go to Policy & Objects > Addresses and create a new address for our IPs. Navigate to Firewall Policy and create a new policy allowing traffic from the new address to your internal network. Move the policy to the correct sequence and save. Official Documentation: Fortinet - Firewall Policies

Q: How to Add an Access Rule:

Open SmartConsole and connect to your management server. Go to Security Policies . Add a new rule allowing traffic from our monitoring IPs to your resources. Install the policy to apply changes. Official Documentation: Check Point - Security Management Administration Guide

Q: How to Create a Firewall Access Rule:

Log in to the SonicWall web interface. Navigate to Rules > Access Rules . Click Add to create a new rule allowing our monitoring IPs. Configure the necessary settings and save. Official Documentation: SonicWall - How to Create Firewall Access Rules

Here is the list of our IPs so you can allow-list them if needed.

Download all IPs for allow-listing in .txt, JSON or directly from DNS

JSON ip.uptimerobot.com IPv4 (.txt) IPv4 and IPv6 combined (.txt)

To keep your IPs up to date, we’ve released a dedicated API that always returns the latest list of UptimeRobot monitoring IPs. Click on “JSON” to access it.

UptimeRobot uses a distributed monitoring system to minimize false-positives.

All initial checks are performed from the same region using randomly selected servers (IPs). When an issue is detected, we verify the downtime by conducting additional checks from different servers and providers within the same region.

Allow-listing.

If the monitoring works well for you, there is no need to take any action. However, if you receive any false positives, there is a strong chance that the IPs used are blocked by your hosting provider. Learn more about all the reasons for monitor downtime in detail.

Please make sure that you allow-list these IPs so that any requests that UptimeRobot send are not blocked.

Locations and IPs.

Loading IPs…

Tips for adding our monitoring IPs to your firewall.

1. Windows Defender Firewall

How to Add an IP Address to the Allow List:

Open Windows Defender Firewall with Advanced Security.
Click on Inbound Rules New Rule.
Select Custom for the Rule Type and click Next.
In the Scope tab, under Remote IP address, select These IP addresses and click Add.
Enter our monitoring IP addresses and click OK.
Complete the wizard to create the rule.

Official Documentation:

Microsoft Docs - Configure Windows Defender Firewall

2. Linux iptables

How to Allow an IP Address:

Open your terminal.
Run the following command for each IP address:
sudo iptables -A INPUT -s [IP_ADDRESS] -j ACCEPT
Save the iptables configuration to ensure changes persist after reboot.

Official Documentation:

Netfilter/iptables Project Documentation

3. Linux UFW (Uncomplicated Firewall)

How to Allow an IP Address:

Open your terminal.
Run the command:
sudo ufw allow from [IP_ADDRESS]
Reload UFW to apply changes:
sudo ufw reload

Official Documentation:

Ubuntu Community Help - UFW

4. Cisco ASA Firewall

How to Create an Access Rule:

Log in to the Cisco ASDM or CLI.
Navigate to Configuration > Firewall > Access Rules.
Add a new rule permitting traffic from our monitoring IPs to your server.
Apply and save the configuration.

Official Documentation:

Cisco ASA Series Firewall CLI Configuration Guides

5. Palo Alto Networks Firewall

How to Create a Security Policy Rule:

Log in to the Palo Alto Networks web interface.
Go to Policies > Security.
Click Add to create a new rule.
In the Source tab, add our monitoring IPs.
Define the necessary parameters and click OK.
Commit the changes.

Official Documentation:

Palo Alto Networks - Security Policy

6. Fortinet FortiGate Firewall

How to Add an Address and Policy:

Log in to the FortiGate web interface.
Go to Policy & Objects > Addresses and create a new address for our IPs.
Navigate to Firewall Policy and create a new policy allowing traffic from the new address to your internal network.
Move the policy to the correct sequence and save.

Official Documentation:

Fortinet - Firewall Policies

7. Check Point Firewall

How to Add an Access Rule:

Open SmartConsole and connect to your management server.
Go to Security Policies.
Add a new rule allowing traffic from our monitoring IPs to your resources.
Install the policy to apply changes.

Official Documentation:

Check Point - Security Management Administration Guide

8. SonicWall Firewall

How to Create a Firewall Access Rule:

Log in to the SonicWall web interface.
Navigate to Rules > Access Rules.
Click Add to create a new rule allowing our monitoring IPs.
Configure the necessary settings and save.

Official Documentation:

SonicWall - How to Create Firewall Access Rules