These entries are queried from radb.net using whois, you can try my project getting these.
:AS19691 route: 198.37.48.0/20 descr: Switch Communications Customer Route origin: AS19691 remarks: Route for 888 Holdings remarks: 198.37.48.0/20-24 mnt-by: SWITCHCOM-MNT changed: netops-eng [at] switchlv.com 20120717 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.37.48.0/20 descr: Switch Communications Customer Route origin: AS19691 member-of: RS-AS23005 mnt-by: MAINT-SWITCH changed: netops [at] switch.com 20180102 source: RADB last-modified: 2023-11-13T15:52:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.37.48.0/24 origin: AS19691 descr: PA-INSTATE admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2020-12-16T15:00:17Z last-modified: 2020-12-16T15:00:17Z source: ARIN rpki-ov-state: valid route: 198.37.49.0/24 origin: AS19691 descr: CO Instate admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2021-04-25T12:38:49Z last-modified: 2021-04-25T12:38:49Z source: ARIN rpki-ov-state: valid route: 198.37.50.0/24 origin: AS19691 descr: Ind Ext admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2022-12-12T18:02:59Z last-modified: 2022-12-12T18:02:59Z source: ARIN rpki-ov-state: valid route: 198.37.51.0/24 origin: AS19691 descr: NJMU-S3-Backup admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2023-12-20T17:14:16Z last-modified: 2023-12-20T17:14:16Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.37.52.0/24 origin: AS19691 descr: NJMU-Outside admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2023-12-20T17:11:38Z last-modified: 2023-12-20T17:11:38Z source: ARIN rpki-ov-state: valid route: 198.37.54.0/24 origin: AS19691 descr: 888 US IN admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2022-12-11T12:38:28Z last-modified: 2022-12-11T12:38:28Z source: ARIN rpki-ov-state: valid route: 198.37.55.0/24 origin: AS19691 descr: NJ-AWS-Backup admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2022-06-30T11:26:35Z last-modified: 2022-06-30T11:26:35Z source: ARIN rpki-ov-state: valid route: 198.37.63.0/24 origin: AS19691 descr: PA-Instate-Tunnels admin-c: WIKIN1-ARIN tech-c: WIKIN1-ARIN mnt-by: MNT-USINC created: 2021-07-07T13:25:03Z last-modified: 2021-07-07T13:25:03Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source