These entries are queried from radb.net using whois, you can try my project getting these.
:AS14893 route: 205.141.232.0/22 descr: CHTR- COVENANT HEALTHCARE-Central origin: AS14893 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: publicipaddressing [at] charter.com 20210305 #08:21:43Z source: RADB route: 205.141.232.0/22 descr: Added for AS14893 origin: AS14893 mnt-by: MNT-GLC-30 changed: ipadmin [at] glcom.net 20151215 source: ARIN-NONAUTH