PayPal IPNs IPs update May 3, 2021

On May 3, 2021, PayPal will update the list of IPs for their Instant Payments Notification (IPN) service.

Here is the list of new and old IPs:

66.211.170.66 (Old)
66.211.170.66 (Old)
173.0.81.1 (Old)
173.0.81.0/24 (Old)
173.0.81.33 (Old)
173.0.81.65 (New)
173.0.81.140 (New)
64.4.240.0/21 (New)
64.4.248.0/22 (New)
66.211.168.0/22 (New)
173.0.80.0/20 (New)
91.243.72.0/23 (New)

You should add the new IPs to your firewall/allow lists to ensure the normal operation of the PayPal notifications for your account.

The clean list of the new IPs to add to your allow list is:

173.0.81.65
173.0.81.140
64.4.240.0/21
64.4.248.0/22
66.211.168.0/22
173.0.80.0/20
91.243.72.0/23

If you are using csf just edit the /etc/csf/csf.allow file and add the above IPs.

# nano /etc/csf/csf.allow

# csf -r

Resources:
PP-LIVE-31029