These entries are queried from radb.net using whois, you can try my project getting these.
:AS45535 route: 139.71.200.0/24 descr: AMERICAN EXPRESS BANKING CORPORATION_OM201712143295754 origin: AS45535 mnt-by: MAINT-AS18101 changed: ip.nnoc [at] relianceada.com 20171215 #09:01:02Z source: RADB last-modified: 2023-11-13T15:52:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.202.0/24 origin: AS45535 descr: American Express admin-c: DUMMY-RADB tech-c: DUMMY-RADB notify: luis.d.alfaro [at] aexp.com mnt-by: MAINT-AS6307 changed: luis.d.alfaro [at] aexp.com 20240419 # 1736Z source: RADB last-modified: 2024-04-19T17:36:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.203.0/24 origin: AS45535 descr: American Express admin-c: DUMMY-RADB tech-c: DUMMY-RADB notify: luis.d.alfaro [at] aexp.com mnt-by: MAINT-AS6307 changed: luis.d.alfaro [at] aexp.com 20240419 # 1737Z source: RADB last-modified: 2024-04-19T17:37:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.210.0/24 origin: AS45535 descr: American Express mnt-by: MAINT-AS6307 changed: luis.d.alfaro [at] aexp.com 20230519 #18:07:13Z source: RADB last-modified: 2023-11-13T16:17:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.211.0/24 origin: AS45535 descr: American Express mnt-by: MAINT-AS6307 changed: luis.d.alfaro [at] aexp.com 20230519 #18:08:03Z source: RADB last-modified: 2023-11-13T16:17:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.212.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS45535 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.213.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS45535 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.214.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS45535 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.220.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS45535 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.221.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS45535 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.71.222.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS45535 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.170.25.0/24 descr: American Express Banking Corp-VSNL Route Object origin: AS45535 mnt-by: MAINT-VSNL-IN changed: ip.admin [at] tatacommunications.com 20081127 source: RADB last-modified: 2023-11-13T15:42:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source