These entries are queried from radb.net using whois, you can try my project getting these.
:AS28143 route: 187.49.96.0/20 origin: AS28143 descr: CT23979-TECNOLIGA-TELIUM mnt-by: MAINT-AS22381 changed: alisson.david [at] megatelecom.com.br 20220503 #17:41:33Z source: RADB last-modified: 2023-11-13T16:10:57Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.49.96.0/20 descr: DFHI Active Page origin: AS28143 mnt-by: MAINT-AS28143 notify: TC-HM-MNT changed: info [at] activepage.com.br 20101222 source: TC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.49.96.0/21 descr: CLARO S.A. Customer origin: AS28143 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20201026 source: RADB last-modified: 2023-11-13T16:02:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.49.98.0/24 descr: DFHI Active Page origin: AS28143 mnt-by: MAINT-AS28143 notify: TC-HM-MNT changed: info [at] activepage.com.br 20101222 source: TC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.49.99.0/24 descr: DFHI Active Page origin: AS28143 mnt-by: MAINT-AS28143 notify: TC-HM-MNT changed: info [at] activepage.com.br 20101222 source: TC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.49.101.0/24 descr: CLARO S.A. Customer origin: AS28143 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20201026 source: RADB last-modified: 2023-11-13T16:02:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.49.104.0/21 descr: CLARO S.A. Customer origin: AS28143 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20201026 source: RADB last-modified: 2023-11-13T16:02:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:5ec::/32 origin: AS28143 descr: E Greco Falchione Manutencao mnt-by: MAINT-AS53087 changed: noc [at] tely.com.br 20200609 #02:49:19Z source: RADB last-modified: 2023-11-13T16:00:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source