These entries are queried from radb.net using whois, you can try my project getting these.
:AS15139 route: 140.212.160.0/21 descr: New route per customer request origin: AS15139 mnt-by: LEVEL3-MNT changed: daniel.elkins [at] level3.com 20080306 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 140.212.176.0/21 descr: Proxy entry for Panasonic Corp origin: AS15139 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180626 #06:09:52Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 140.212.200.0/22 descr: PNAP-NYC Panasonic origin: AS15139 mnt-by: MAINT-AS1828 changed: scottl [at] internap.com 20090330 source: RADB last-modified: 2023-11-13T16:14:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 140.212.201.0/24 descr: PNAP-NYC Panasonic origin: AS15139 mnt-by: MAINT-AS1828 changed: scottl [at] internap.com 20090330 source: RADB last-modified: 2023-11-13T16:14:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 140.212.202.0/24 descr: PNAP-NYC Panasonic origin: AS15139 mnt-by: MAINT-AS1828 changed: scottl [at] internap.com 20090330 source: RADB last-modified: 2023-11-13T16:14:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 140.212.203.0/24 descr: PNAP-NYC Panasonic origin: AS15139 mnt-by: MAINT-AS1828 changed: scottl [at] internap.com 20090330 source: RADB last-modified: 2023-11-13T16:14:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 140.212.204.0/23 descr: PNAP-NYM psonic origin: AS15139 mnt-by: MAINT-AS1828 changed: prohrman [at] internap.com 20010102 source: RADB last-modified: 2023-11-13T16:14:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.212.0.0/16 descr: Customer Route origin: AS15139 mnt-by: GNPC-MNT changed: louise.yates [at] level3.com 20090428 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source