These entries are queried from radb.net using whois, you can try my project getting these.
:AS18670 route: 199.85.22.0/23 descr: Arrowstreet Capital, L.P. origin: AS18670 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190331 source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.85.22.0/24 descr: Arrowstreet Capital origin: AS18670 mnt-by: MAINT-AS27506 changed: kmercer [at] lightower.com 20160502 source: RADB last-modified: 2023-11-13T15:49:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.83.67.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS18670 remarks: Proxy for EDI customer Arrowstreet mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamhere.cable.comcast.com 20150408 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source