These entries are queried from radb.net using whois, you can try my project getting these.
:AS132423 route: 103.21.124.0/22 descr: IITB-IN descr: Indian Institute of Technology Bombay, Mumbai origin: AS132423 country: IN mnt-routes: MAINT-IITB-IN mnt-by: MAINT-IITB-IN last-modified: 2017-06-15T05:17:46Z source: APNIC rpki-ov-state: valid route: 103.21.124.0/24 origin: AS132423 descr: Indian Institute of Technology Bombay Powai mnt-by: MAINT-IITB-IN last-modified: 2019-04-25T11:59:18Z source: APNIC rpki-ov-state: valid route: 103.21.125.0/24 origin: AS132423 descr: Indian Institute of Technology Bombay Powai mnt-by: MAINT-IITB-IN last-modified: 2019-04-25T11:59:18Z source: APNIC rpki-ov-state: valid route: 103.21.126.0/24 origin: AS132423 descr: Indian Institute of Technology Bombay Powai mnt-by: MAINT-IITB-IN last-modified: 2019-04-25T11:59:19Z source: APNIC rpki-ov-state: valid route: 103.21.127.0/24 origin: AS132423 descr: Indian Institute of Technology Bombay Powai mnt-by: MAINT-IITB-IN last-modified: 2019-04-25T11:59:19Z source: APNIC rpki-ov-state: valid route6: 2001:df0:413::/48 descr: IITB-IN descr: Indian Institute of Technology Bombay, Mumbai origin: AS132423 country: IN mnt-routes: MAINT-IITB-IN mnt-by: MAINT-IITB-IN last-modified: 2017-07-07T06:18:28Z source: APNIC rpki-ov-state: valid