These entries are queried from radb.net using whois, you can try my project getting these.
:AS53442 route: 142.219.0.0/16 descr: Proxy route added on behalf of City of Coquitlam origin: AS53442 mnt-by: MAINT-AS6391 changed: tsamplonius [at] ubn.ca 20160201 #09:01:51Z source: RADB last-modified: 2023-11-13T15:48:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.219.0.0/17 descr: Proxy for Allstream Customer origin: AS53442 remarks: Automated Proxy Route Entry mnt-by: MAINT-AS15290 changed: ali.zerik [at] mtsallstream.com 20131214 source: RADB last-modified: 2023-11-13T16:00:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.219.128.0/17 descr: Proxy for Allstream Customer origin: AS53442 remarks: Automated Proxy Route Entry mnt-by: MAINT-AS15290 changed: ali.zerik [at] mtsallstream.com 20131214 source: RADB last-modified: 2023-11-13T16:00:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source