OID value: 0.9.2342.19200300.100.1.9
OID description:
The Host attribute type specifies a host computer.
host ATTRIBUTE ::= {
    WITH SYNTAX DirectoryString { ub-host }
    EQUALITY MATCHING RULE caseIgnoreMatch
    SUBSTRINGS MATCHING RULE caseIgnoreSubstringsMatch
    ID id-host
}
See also the OID Repository website reference for 0.9.2342.19200300.100.1.9