OID value: 1.2.840.10045.4.1
OID description:
ansi-X9-62 OBJECT IDENTIFIER ::= {
iso(1) member-body(2) us(840) 10045 }
id-fieldType OBJECT IDENTIFIER ::= { ansi-X9-62 fieldType(1) }
URL for further info: http://www.ietf.org/internet-drafts/draft-ietf-pkix-ipki-pkalgs-02.txt
See also the OID Repository website reference for 1.2.840.10045.4.1