These entries are queried from radb.net using whois, you can try my project getting these.
:AS-BXS as-set: AS-BXS descr: MNT-BG-556 as-set AS-BXS members: AS398343,AS400509,AS46967,AS26383,AS147287,AS141172,AS1239,AS51659,AS49392 admin-c: CEO66-ARIN tech-c: CEO66-ARIN mnt-by: MNT-BG-556 created: 2020-11-19T17:27:17Z last-modified: 2023-08-15T15:45:42Z source: ARIN as-set: AS-BXS descr: BAXET as-set members: AS51659 members: AS51711 members: AS62177 members: AS60135 members: AS49655 members: AS400509 members: AS207718 members: AS46967 members: AS9394 members: AS62240 members: AS4812 members: AS48188 members: AS35251 members: AS139659 members: AS4809 members: AS38197 members: AS136200 members: AS23650 members: AS137697 members: AS2118 members: AS45090 members: AS5570 members: AS39182 members: AS65243 members: AS141771 members: AS398968 members: AS39106 members: AS398343 members: AS49392 members: AS139773 members: AS269922 members: AS57756 members: AS141171 members: AS50612 members: AS39117 members: AS43282 members: AS48627 members: AS9808 members: AS328703 members: AS30788 members: AS209847 members: AS47464 members: AS52031 members: AS61048 members: AS41498 members: AS38283 members: AS60843 members: AS20764 members: AS6679 members: AS61317 members: AS9098 members: AS34567 members: AS50308 members: AS34856 members: AS41918 members: AS44659 members: AS47489 members: AS61100 members: AS211626 members: AS42375 members: AS56897 members: AS60935 members: AS61192 members: AS211546 members: AS47362 members: AS48834 members: AS4134 members: AS4837 members: AS4812 members: AS38283 members: AS50896 members: AS49111 members: AS57448 members: AS44893 members: AS49032 members: AS7018 members: AS204224 members: AS204183 members: AS203914 members: AS203942 members: AS204701 members: AS204187 members: AS204384 members: AS210352 members: AS19905 members: AS147287 members: AS4808 members: AS26383 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: BX-NOC created: 2011-03-30T09:49:55Z last-modified: 2023-10-06T12:50:42Z 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: ****************************