These entries are queried from radb.net using whois, you can try my project getting these.
:AS-SYNAPSE as-set: AS-SYNAPSE descr: Synapse Network customers AS members: AS29107 members: AS39148 members: AS42434 members: AS44379 members: AS-UKRINDEX members: AS-INTRAFFIC members: AS197561 members: AS56433 members: AS-STARGROUP members: AS-PAVUTYNA members: AS25183 members: AS57349 members: AS198395 members: AS52119 members: AS49561 members: AS200000 members: AS-DELTAX members: AS198088 members: AS21308 members: AS-PCN members: AS57836 members: AS60386 members: AS41985 members: AS50043 members: AS209593 members: AS213228 admin-c: DUMY-RIPE tech-c: DUMY-RIPE mnt-by: SYNAPSE-MNT created: 2004-05-05T10:47:19Z last-modified: 2023-09-03T00:25:46Z 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: ****************************