These entries are queried from radb.net using whois, you can try my project getting these.
:AS22973 route: 207.21.121.0/24 descr: Norwest-AS22973(added by MAINT-AS3257) origin: AS22973 remarks: ------------------------------------------------ remarks: - This route object was registered by - remarks: - Yipes Enterprise Services MAINT-AS3257 - remarks: - on behalf of their customer: - remarks: - Norwest AS22973 in PAL - remarks: ------------------------------------------------ notify: netguard [at] gtt.net mnt-by: MAINT-AS3257 changed: juhlson [at] yipes.com 20021016 changed: netguard [at] gtt.net 20180615 source: RADB last-modified: 2023-11-13T15:53:48Z rpki-ov-state: valid