These entries are queried from radb.net using whois, you can try my project getting these.
:AS-ITGRAD as-set: AS-ITGRAD descr: ASes routed by IT-GRAD members: AS48096 members: AS62382 members: AS51593 members: AS42219 members: AS59513 members: AS209930 members: AS-DEVINOTELECOM members: AS206027 members: AS203870 members: AS212189 members: AS50358 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: MNT-IT-GRAD created: 2013-08-29T11:23:43Z last-modified: 2022-12-30T11:03:05Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: ****************************