These entries are queried from radb.net using whois, you can try my project getting these.
:AS11036 route: 209.251.0.0/20 descr: AS11036 proxy-registered route by Cogent origin: AS11036 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040602 source: RADB route: 209.251.16.0/21 descr: AS11036 proxy-registered route by Cogent origin: AS11036 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040602 source: RADB route: 204.29.217.0/24 descr: AVI-SPL origin: AS11036 mnt-by: MAINT-AS11036 changed: amon.hogue [at] avispl.com 20120924 #15:32:20Z source: RADB route: 209.251.6.0/24 descr: AVI-SPL origin: AS11036 mnt-by: MAINT-AS11036 changed: amon.hogue [at] avispl.com 20120924 #15:32:20Z source: RADB route: 65.89.40.0/22 descr: Level (3) cidr block origin: AS11036 admin-c: Amon Hogue tech-c: Jon Major mnt-by: MAINT-AS11036 changed: amon.hogue [at] avispl.com 20120927 #19:37:46Z source: RADB