These entries are queried from radb.net using whois, you can try my project getting these.
:AS399410 route: 198.96.138.0/23 descr: Proxy route object registered by AS2764 origin: AS399410 remarks: This route object was created by AAPT on behalf of a customer. remarks: As some of AAPTs upstream networks filter based on IRR objects, remarks: this route object has been created to ensure that the advertisement remarks: of this prefix is not rejected. notify: routing.shared [at] aapt.com.au mnt-by: MAINT-AS2764 changed: nobody [at] aapt.com.au 20210706 source: RADB last-modified: 2023-11-13T16:16:49Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.138.0/24 origin: AS399410 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: cromero [at] akamai.com 20210806 #00:21:40Z source: RADB last-modified: 2023-11-13T16:13:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.138.0/24 origin: AS399410 descr: RBC admin-c: RBCAD-ARIN tech-c: RBCAD-ARIN tech-c: RHENN-ARIN tech-c: SNRBC-ARIN mnt-by: MNT-RBC-1 created: 2022-03-31T20:24:17Z last-modified: 2024-01-12T15:32:41Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source