Expiration Dates of Root and Mid Level Certificates
InCommon SSL Chain
Comodo AddTrust External CA → InCommon Intermediate Server CA → Subscriber SSL Certificates
Root Certificate
The SHA-2 Root: USERTrust RSA Certification Authority" (Expires Jan 2038) from Sectigo(link is external).
Intermediate Certificate
The "InCommon RSA Server CA" (Expires October 5, 2024) from Internet2.
Subscriber SSL Certificates
The expiration date for these certificates is one to two years from when they were issued using the InCommon Certificate Service.
The named person for these requests will receive an automated notice from the InCommon Certificate Service Manager.
Special Purpose Certificate
For unusual cases, Sectigo has offered a cross signing option with its AAA root(link is external), which does not expire until 2028.