Here's my named.conf.options file:

options {
        directory "/var/cache/bind";
        dnssec-enable yes;

        auth-nxdomain no;    # conform to RFC1035
        listen-on-v6 { any; };

        # disable recursion
        recursion no;
};

I've tried adding allow-recursion { "none"; } before recursion but this also has no effect; I'm testing it by using nslookup on Windows, and using google.com. as the query (and it returns an IP, so I assume recursion is on). This issue occurs on two servers with similar setups.