These entries are queried from radb.net using whois, you can try my project getting these.
:AS7764 route: 148.129.0.0/16 descr: US-Census-Bureau origin: AS7764 mnt-by: CENSUS-MNT changed: paul.zummo [at] level3.com 20040401 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.167.186.0/23 descr: FUTRON-AS7764 (added by MAINT-AS3257) origin: AS7764 remarks: ------------------------------------------------ remarks: - This route object was registered by - remarks: - Yipes Enterprise Services MAINT-AS3257 - remarks: - on behalf of their customer: - remarks: - FUTRON-AS7764 in DCA - remarks: ------------------------------------------------ notify: netguard [at] gtt.net mnt-by: MAINT-AS3257 changed: juhlson [at] relianceglobalcom.com 20110506 changed: netguard [at] gtt.net 20180615 source: RADB last-modified: 2023-11-13T15:53:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source