OID value: 1.3.6.1.5.5.7.48.1.2
OID description:
From RFC 2560: 4.4.1 Nonce The nonce cryptographically binds a request and a response to prevent replay attacks. The nonce is included as one of the requestExtensions in requests, while in responses it would be included as one of the responseExtensions. In both the request and the response, the nonce will be identified by the object identifier id-pkix-ocsp-nonce, while the extnValue is the value of the nonce. id-pkix-ocsp-nonce OBJECT IDENTIFIER ::= { id-pkix-ocsp 2 }
URL for further info: http://www.ietf.org/rfc/rfc2560.txt
See also the OID Repository website reference for 1.3.6.1.5.5.7.48.1.2