These entries are queried from radb.net using whois, you can try my project getting these.
:AS40102 route: 160.253.0.0/16 origin: AS40102 descr: Central Services 9221 Corporate Blvd Rockville MD 20850 United States admin-c: MNS5-ARIN tech-c: MNS5-ARIN mnt-by: MNT-MONTGO-11-Z created: 2023-12-22T15:26:58Z last-modified: 2023-12-22T15:26:58Z source: ARIN rpki-ov-state: valid route: 160.253.0.0/16 descr: Montgomery College origin: AS40102 mnt-by: CTI-MNT changed: ccs_ip-admin [at] cable.comcas.com 20061201 source: LEVEL3 rpki-ov-state: valid route: 160.253.0.0/16 descr: Montgomery College origin: AS40102 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20100716 #14:57:37Z source: RADB last-modified: 2023-11-13T15:40:59Z rpki-ov-state: valid route: 160.253.0.0/18 descr: Montgomery College origin: AS40102 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20160404 #13:01:01Z source: RADB last-modified: 2023-11-13T15:49:06Z rpki-ov-state: valid route: 160.253.0.0/18 origin: AS40102 descr: Central Services 9221 Corporate Blvd Rockville MD 20850 United States admin-c: MNS5-ARIN tech-c: MNS5-ARIN mnt-by: MNT-MONTGO-11-Z created: 2023-12-28T21:19:31Z last-modified: 2023-12-28T21:19:31Z source: ARIN rpki-ov-state: valid route: 160.253.64.0/18 origin: AS40102 descr: Central Services 9221 Corporate Blvd Rockville MD 20850 United States admin-c: MNS5-ARIN tech-c: MNS5-ARIN mnt-by: MNT-MONTGO-11-Z created: 2023-12-28T21:20:03Z last-modified: 2023-12-28T21:20:03Z source: ARIN rpki-ov-state: valid route: 160.253.64.0/18 descr: Proxy object registered by Atlantech Online origin: AS40102 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20180129 #13:48:25Z source: RADB last-modified: 2023-11-13T15:53:05Z rpki-ov-state: valid route: 160.253.128.0/18 origin: AS40102 descr: Central Services 9221 Corporate Blvd Rockville MD 20850 United States admin-c: MNS5-ARIN tech-c: MNS5-ARIN mnt-by: MNT-MONTGO-11-Z created: 2023-12-28T21:20:34Z last-modified: 2023-12-28T21:20:34Z source: ARIN rpki-ov-state: valid route: 160.253.128.0/18 descr: Proxy object registered by Atlantech Online origin: AS40102 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20180129 #13:48:36Z source: RADB last-modified: 2023-11-13T15:53:05Z rpki-ov-state: valid