Allow listing domains, ports and IP addresses

Necessary domains, ports, and IP addresses to be allowlisted to allow access through my firewall for the server monitoring agent

The server monitoring agent uses one-way outbound HTTPS to communicate with the Site24x7 central server. Please provide access to the below ports and domains to facilitate this communication:

Domains - dms.zoho.com (Device messaging system), plus.site24x7.com (Primary data center), plus2.site24x7.com (Disaster recovery data center), plus3.site24x7.com (Disaster recovery data center), logu.site24x7.com (Log receiver)

Ports - 443 (outbound port)

IP addresses to be whitelisted:

Region
Domain
Data Center
IP Range
IP Usable Range
USA Data Center
Seattle, USA 
plus.site24x7.com, logu.site24x7.com
logc.site24x7.com
Primary data center
  1. 136.143.176.0/23,
  2. 136.143.186.0/23, 
  3. 136.143.189.0/24,
  4. 136.143.190.0/23,
  5. 204.141.42.0/23

  1. 136.143.176.1 to 136.143.177.254
  1. 136.143.186.1 to 136.143.187.254
  1. 136.143.189.1 to 136.143.189.254
  1. 136.143.190.1 to 136.143.191.254
  1. 204.141.42.1 to 204.141.43.254
Dallas, USA
plus2.site24x7.com
Secondary data center
  1. 136.143.178.0/23,
  2. 136.143.180.0/23,
  3. 136.143.182.0/23,
  4. 136.143.185.0/24,
  5. 204.141.32.0/23

  1. 136.143.178.1 to 136.143.179.254
  1. 136.143.180.1 to 136.143.181.254
  1. 136.143.182.1 to 136.143.183.254
  1. 136.143.185.1 to 136.143.185.254
  1. 204.141.32.1 to 204.141.33.254
Amsterdam, Netherlands
plus3.site24x7.com
Tertiary data center for USA
  1. 31.186.243.0/24
  2. 185.20.209.0/24


  1. 31.186.243.1 to 31.186.243.254,
  1. 185.20.209.1 to 185.20.209.254
Europe Data Center
Amsterdam, Netherlands
plus.site24x7.eu, logu.site24x7.eu
logc.site24x7.eu
Primary data center
  1. 31.186.243.0/24
  2. 185.20.209.0/24
  3. 213.244.146.0/24
  4. 185.230.212.0/23

  1. 31.186.243.1 to 31.186.243.254,
  1. 185.20.209.1 to 185.20.209.254,
  1. 213.244.146.1 to 213.244.146.254,
  1. 185.230.212.1 to 185.230.213.254
Dublin, Ireland
plus2.site24x7.eu
Secondary data center
  1. 87.252.213.0/24
  2. 89.36.170.0/24
  3. 217.163.72.0/24
  4. 185.230.214.0


  1. 87.252.213.0 to 87.252.213.255,
  1. 89.36.170.0 to 89.36.170.255,
  1. 217.163.72.0 to 217.163.72.255,
  1. 185.230.214.0 to 185.230.214.255

China Data Center
Shanghai, China
plus.site24x7.cn
logu.site24x7.cn
logc.site24x7.cn
Primary data center

  1. 163.53.93.0/24
  2. 163.53.94.0/27
  3. 118.126.63.128/25
  4. 118.126.63.64/26
  5. 103.212.59.96/29


  1. 163.53.93.1 to 163.53.93.254
  1. 163.53.94.1 to 163.53.94.30
  1. 118.126.63.129 to 118.126.63.254
  1. 118.126.63.65 to 118.126.63.126
  1. 103.212.59.97 to 103.212.59.102

Beijing, China
plus2.site24x7.cn
Secondary data center

  1. 124.251.121.0/24
  2. 124.251.122.0/25
  3. 124.251.128.0/24 


  1. 124.251.121.1 to 124.251.121.254
  1. 124.251.122.1 to 124.251.122.126
  1. 124.251.128.1 to 124.251.128.254

India Data Center
Mumbai, India
plus.site24x7.in
logu.site24x7.in
logc.site24x7.in
Primary data center

  1. 103.103.198.0/24
  2. 103.117.159.0/24
  3. 103.89.74.0/24
  4. 169.148.148.0/23


  1. 103.103.198.1 to 103.103.198.254
  1. 103.117.159.1 to 103.117.159.254
  1. 103.89.74.1 to 103.89.74.254
  1. 169.148.148.1 to 169.148.149.254

Chennai, India
plus2.site24x7.in
Secondary data center

  1. 103.103.196.0/24
  2. 103.103.197.0/24
  3. 103.117.158.0/24
  4. 103.89.75.0/24


  1. 103.103.196.1 to 103.103.196.254
  1. 103.103.197.1 to 103.103.197.254
  1. 103.117.158.1 to 103.117.158.254
  1. 103.89.75.1 to 103.89.75.254

Australia Data Center
Sydney, Australia
plus.site24x7.net.au
logu.site24x7.net.au
logc.site24x7.net.au
Primary data center
  1. 101.97.36.0/24
  2. 103.138.128.0/23

  1. 101.97.36.1 to 101.97.36.254
  1. 103.138.128.1 to 103.138.129.254

Melbourne, Australia
plus2.site24x7.net.au
Secondary data center

  1. 103.91.166.0/24
  2. 165.173.191.0/24


  1. 103.91.166.1 to 103.91.166.254
  1. 165.173.191.1 to 165.173.191.254 

Saudi Arabia Data Center
Riyadh, Saudi Arabia
plus.site24x7.sa
logu.site24x7.sa
logc.site24x7.sa
Primary data center
199.67.80.0/23
199.67.80.1 to 199.67.81.254
Jeddah, Saudi Arabia
plus2.site24x7.sa
Secondary data center
199.67.82.0/23
199.67.82.1 to 199.67.83.254
Canada Data Center
Toronto, Canada
plus.site24x7.ca
logu.site24x7.ca
logc.site24x7.ca
Primary data center

  1. 199.67.84.0/24
  2. 199.67.85.0/24
  3. 199.67.87.0/24


  1. 199.67.84.1 to 199.67.84.254
  1. 199.67.85.1 to 199.67.85.254
  1. 199.67.87.1 to 199.67.87.254

Montreal, Canada
plus2.site24x7.ca
Secondary data center

  1. 199.67.86.0/24
  2. 199.67.69.0/24


  1. 199.67.86.1 to 199.67.86.254 
  1. 199.67.69.1 to 199.67.69.254

Japan Data Center
Tokyo, Japan
plus.site24x7.jp
logu.site24x7.jp
logc.site24x7.jp
Primary data center

  1. 193.118.160.0/24
  2. 103.163.152.0/23


  1. 193.118.160.1 to 193.118.160.254
  1. 103.163.152.1 to 103.163.153.254

Osaka, Japan
plus2.site24x7.jp
Secondary data center

  1. 193.118.161.0/24

  1. 193.118.161.1 to 193.118.161.254
UK Data Center
London, UK
plus.site24x7.uk
logu.site24x7.uk
logc.site24x7.uk
Primary data center
  1. 199.67.88.0/24
  2. 169.148.131.0/24

  1. 199.67.88.1 to 199.67.88.254
  1. 169.148.131.1 to 169.148.131.254
Manchester, UK

Secondary data center

  1. 199.67.89.0/24
  2. 169.148.129.0/24


  1. 199.67.89.1 to 199.67.89.254
  2. 169.148.129.1 to 169.148.129.254




    • Related Articles

    • Troubleshooting false positive alerts in monitoring

      Problem False positive alerts are being generated. Possible cause The monitoring system is down in some locations. The Website monitor might be configured for one location, such as Seattle, but may appear down when accessed from another location, ...

    • How to configure the NGINX status page for monitoring NGINX performance

      The NGINX plugin uses the NGINX status page to pull the performance metrics of the NGINX server. You may encounter the following errors while installing the NGINX plugin integration: Error_code : HTTP Error 404: This error usually indicates that the ...

    • Compare our various methodologies for Website Monitoring

      Get to know Site24x7 monitors better and choose the one that best fits your monitoring needs. Compare the functionality of the following monitors: Website Monitoring Webpage Speed (Browser) Web Transaction Monitoring Web Transaction (Browser) SSL/TLS ...

    • Exclude the selective SSH algorithms in On-Premise Poller during SFTP Transfer monitoring

      By excluding SSH algorithms, you can restrict Site24x7 SSH Client from using the excluded algorithm while connecting to the SSH server during SFTP Transfer monitoring. Follow the steps mentioned below for SSH algorithm exclusion in On-Premise Poller ...

    • Monitor and validate DNS IP changes using regex

      DNS administrators often monitor their DNS servers to detect changes in domain resolution and ensure IP mappings remain secure and accurate. Problem When your organization adds or modifies an IP address for your domain name, it’s critical to: Be ...