EV certificates require OCSP: Section 26-A of the issuing criteria requires CAs to support OCSP checking for all certificates issued after Dec. 31, 2010.<p>However as the other poster notes, OCSP stapling includes recent proof that the cert hasn&#x27;t been revoked the initial handshake, removing additional round trips. See <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;OCSP_stapling" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;OCSP_stapling</a>