These entries are queried from radb.net using whois, you can try my project getting these.
:AS-266967 as-set: AS-266967 descr: AS-SET TERAFIBER members: AS266967 members: AS270415 members: AS266967:AS-CUSTOMERS mnt-by: MAINT-AS266967 changed: carlosmagno [at] networktelecom.com.br 20210901 source: ALTDB