These entries are queried from radb.net using whois, you can try my project getting these.
:AS33488 route: 66.154.120.0/21 descr: Proxy-registered route object origin: AS33488 remarks: This route object is for a BtN customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found, and remarks: since some BtN peers filter based on these objects remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact peering [at] cais.net if you have any remarks: questions regarding this object. mnt-by: MAINT-AS3491 changed: sajwani [at] pccwbtn.com 20050202 source: RADB last-modified: 2023-11-13T15:42:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.86.208.0/22 descr: ADDED FOR - AS33488 origin: AS33488 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20180918 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.86.208.0/22 descr: Proxy registered block for Providence Park Medical origin: AS33488 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20080321 #18:29:40(UTC) source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source