These entries are queried from radb.net using whois, you can try my project getting these.
:AS18900 route: 208.48.16.0/24 descr: CQG-AS18900(added by MAINT-AS3257) origin: AS18900 remarks: ------------------------------------------------- remarks: - This route object was registered by - remarks: - Yipes Enterprise Services MAINT-AS3257 - remarks: - on behalf of their customer: - remarks: - CQG-AS18900 DEN - remarks: ------------------------------------------------- notify: netguard [at] gtt.net mnt-by: MAINT-AS3257 changed: juhlson [at] yipes.com 20071212 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