These entries are queried from radb.net using whois, you can try my project getting these.
:AS397952 route: 23.135.240.0/24 descr: Nexstream descr: 415 S Washington St descr: Fredericksburg, TX 78624 descr: US origin: AS397952 mnt-by: MNT-ITML-2 changed: jwilson [at] nexstream.net 20200203 source: ARIN rpki-ov-state: valid route: 23.149.240.0/24 origin: AS397952 descr: 415 S Washington St Fredericksburg TX 78624 United States admin-c: JSW47178-ARIN tech-c: BILLI258-ARIN tech-c: JSW47178-ARIN tech-c: KINGP11-ARIN tech-c: NETWO9161-ARIN mnt-by: MNT-ITML-2 created: 2022-01-31T23:00:40Z last-modified: 2023-01-23T22:19:35Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 158.51.107.0/24 descr: NEXSTREAM-V4-2 assigned by ARIN origin: AS397952 notify: network [at] nexstream.net mnt-by: MNT-ITML-2 changed: jwilson [at] nexstream.net 20200203 source: ARIN rpki-ov-state: valid route: 199.116.52.0/22 origin: AS397952 descr: 415 S Washington St Fredericksburg TX 78624 United States admin-c: JSW47178-ARIN tech-c: BILLI258-ARIN tech-c: JSW47178-ARIN tech-c: KINGP11-ARIN tech-c: NETWO9161-ARIN mnt-by: MNT-ITML-2 created: 2022-08-01T14:09:18Z last-modified: 2023-01-23T22:19:35Z source: ARIN rpki-ov-state: valid route6: 2605:3dc0::/32 descr: NEXSTREAM-V6-1 assigned by ARIN origin: AS397952 notify: network [at] nexstream.net mnt-by: MNT-ITML-2 changed: jwilson [at] nexstream.net 20200203 source: ARIN rpki-ov-state: valid