We are using several servers to process your cronjobs.
Here are our IP addresses:
64.225.48.218 134.209.39.102 143.198.114.177 138.197.75.231 159.223.144.10 143.244.166.206 147.182.184.93
Our IPv6 addresses:
2604:a880:800:10::7cf:5001 2604:a880:800:10::80b:e001 2604:a880:400:d0::98:3001 2604:a880:800:10::a78:c001 2604:a880:400:d0::33:f001 2604:a880:400:d0::25cb:b001 2604:a880:400:d0::18f1:f001
Please make sure that we can reach your cronjob URLs from these IP addresses.
If you want to receive email notifications when we update our IP addresses, please log in to FastCron, visit Account > Profile, check the box "Receive email notifications about FastCron IP change".
You can fetch our IP list at https://www.fastcron.com/ip.txt (all IP), https://www.fastcron.com/ipv4.txt (IPv4 only), https://www.fastcron.com/ipv6.txt (IPv6 only).