Where can I find SSL certificates for PayPal Sandbox API servers?

The following SSL/TLS certificates are currently valid for PayPal Sandbox servers.
 

Warning: These SSL/TLS certificates are for use with legacy implementations ONLY. Do NOT download or install these certificates unless your integration requires an X.509 leaf certificate in your trust store.
 
PayPal is upgrading the SSL/TLS certificates used to secure our websites and API endpoints. The new certificates will use a trust chain signed by DigiCert root certificates. You may need to ensure that your environment supports connections that rely on the DigiCert root certificates.

Currently deployed Sandbox certificates:

Endpoint SSL Certificate Certificate Authority Expiration Date
api.sandbox.paypal.com api.sandbox.paypal.com_DigicertG2_08202020.pem DigiCert August 20, 2020
www.sandbox.paypal.com www.sandbox.paypal.com_DigicertHaEv_08212020.pem DigiCert August 21, 2020
api-3t.sandbox.paypal.com api-3t.sandbox.paypal.com_SHA-2_01142020.pem Symantec January 14, 2020
api-aa.sandbox.paypal.com api-aa.sandbox.paypal.com_09272020.pem DigiCert Sept 27, 2020
api-aa-3t.sandbox.paypal.com api-aa-3t.sandbox.paypal.com_SHA-2_01142020.pem Symantec January 14, 2020
pointofsale.sandbox.paypal.com pointofsale.sandbox.paypal.com_09272020.pem DigiCert Sept 27, 2020
svcs.sandbox.paypal.com svcs.sandbox.paypal.com_09272020.pem DigiCert Sept 27, 2020
 

Upcoming Sandbox certificate deployments: 
 
Endpoint SSL Certificate Certificate Authority Expiration Date Target Live Date
api-3t.sandbox.paypal.com api-3t.sandbox.paypal.com_09272020.pem DigiCert Sept 27, 2020 October 9, 2018
api-aa-3t.sandbox.paypal.com api-aa-3t.sandbox.paypal.com_09272020.pem DigiCert Sept 27, 2020 October 9, 2018
 
Note: For PayPal Live SSL/TLS certificates, see Where can I find SSL certificates for PayPal Live API servers?