These entries are queried from radb.net using whois, you can try my project getting these.
:AS10583 route: 170.163.0.0/16 descr: ChimeNet Route Object origin: AS10583 mnt-by: MAINT-AS10583 changed: begin [at] chime.org 20040122 #18:34:12(UTC) source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.21.208.0/23 origin: AS10583 descr: Pulsar360 Chimenet admin-c: DOMAI324-ARIN tech-c: DOMAI324-ARIN tech-c: NADEA6-ARIN tech-c: WINBL-ARIN mnt-by: MNT-PC-2171 created: 2020-08-31T17:25:20Z last-modified: 2023-03-17T20:10:20Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.21.208.0/23 descr: Chimenet origin: AS10583 mnt-by: MAINT-AS27506 changed: yikehara [at] lightower.com 20161220 source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:73c0::/32 descr: ChimeNet, Inc. origin: AS10583 mnt-by: MAINT-AS27506 changed: daniel.mccoon [at] crowncastle.com 20191028 source: RADB last-modified: 2023-11-13T15:58:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:73c0::/32 origin: AS10583 descr: ChimeNet-IPV6 admin-c: BAILE541-ARIN tech-c: BAILE541-ARIN tech-c: HELPD27-ARIN mnt-by: MNT-CHIME-4 created: 2023-09-29T14:03:13Z last-modified: 2023-09-29T14:03:13Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source