These entries are queried from radb.net using whois, you can try my project getting these.
:AS-SINGLEHOP as-set: AS-SINGLEHOP descr: SINGLEHOP AS members: AS32475,AS29117,AS62660,AS2635 mnt-by: MAINT-AS32475 changed: netops [at] singlehop.com 20131030 source: ALTDB