These entries are queried from radb.net using whois, you can try my project getting these.
:AS-FORTHNET as-set: AS-FORTHNET descr: FORTHNET Advertised ASes members: AS1241 members: AS-WIND-HELLAS members: AS6674 members: AS8388 members: AS8499 members: AS9128 members: AS13038 members: AS13153 members: AS15439 members: AS15536 members: AS15764 members: AS15853 members: AS16013 members: AS20506 members: AS21291 members: AS24849 members: AS28953 members: AS29052 members: AS29162 members: AS29229 members: AS29241 members: AS30850 members: AS34239 members: AS34516 members: AS34780 members: AS35472 members: AS35506 members: AS39062 members: AS41125 members: AS42070 members: AS42680 members: AS43834 members: AS44036 members: AS44357 members: AS48168 members: AS48380 members: AS48489 members: AS50148 members: AS51537 members: AS51810 members: AS197534 members: AS197746 members: AS199375 members: AS199382 members: AS200744 members: AS201293 members: AS202506 members: AS203878 members: AS206659 members: AS206697 members: AS209111 members: AS208552 members: AS200540 members: AS56910 members: AS3573 members: AS208785 members: AS206349 members: AS207492 members: AS57794 members: AS34516 members: AS25447 members: AS34516 members: AS60325 members: AS206697 members: AS204932 members: AS211109 members: AS213218 members: AS216028 members: AS215964 admin-c: DUMY-RIPE tech-c: DUMY-RIPE mnt-by: FORTHNETGR-MNT notify: ip-eng-routeadmin [at] forthnet.gr notify: ripe-contact [at] forthnet.gr created: 2002-05-29T11:09:06Z last-modified: 2024-02-26T12:40:02Z 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: ****************************