These entries are queried from radb.net using whois, you can try my project getting these.
:AS32073 route: 205.222.0.0/16 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41 Rockville, MD 20850 US origin: AS32073 remarks: proxy-registered object for customer remarks: direct inquiries to rsfay [at] mcps.k12.md.us mnt-by: MAINT-AS6079 changed: joe.provo [at] rcn.com 20031229 changed: joanna.wyntjes [at] rcn.com 20040414 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.222.0.0/17 origin: AS32073 descr: Proxy object registered by Atlantech Online mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20200615 #11:54:07Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: valid route: 205.222.0.0/17 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-01-29T16:38:11Z last-modified: 2024-01-30T16:20:12Z source: ARIN rpki-ov-state: valid route: 205.222.3.0/24 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-01-29T16:42:36Z last-modified: 2024-01-30T16:20:12Z source: ARIN rpki-ov-state: valid route: 205.222.9.0/24 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-22T17:40:59Z last-modified: 2024-02-22T17:40:59Z source: ARIN rpki-ov-state: valid route: 205.222.9.0/24 origin: AS32073 descr: Montgomery County Public Schools remarks: Proxy object registered by Atlantech Online mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20200616 #19:16:34Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: valid route: 205.222.14.0/24 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T16:51:57Z last-modified: 2024-02-05T16:51:57Z source: ARIN rpki-ov-state: valid route: 205.222.128.0/17 origin: AS32073 descr: Proxy object registered by Atlantech Online mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20200615 #11:54:33Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.222.128.0/18 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T17:01:18Z last-modified: 2024-02-05T17:01:18Z source: ARIN rpki-ov-state: valid route: 205.222.192.0/19 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T17:00:48Z last-modified: 2024-02-05T17:00:48Z source: ARIN rpki-ov-state: valid route: 205.222.224.0/20 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T17:00:15Z last-modified: 2024-02-05T17:00:15Z source: ARIN rpki-ov-state: valid route: 205.222.240.0/21 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T16:59:42Z last-modified: 2024-02-05T16:59:42Z source: ARIN rpki-ov-state: valid route: 205.222.245.0/24 origin: AS32073 descr: Montgomery County Public Schools remarks: Proxy object registered by Atlantech Online mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20200616 #19:15:52Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: valid route: 205.222.245.0/24 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-22T17:41:45Z last-modified: 2024-02-22T17:41:45Z source: ARIN rpki-ov-state: valid route: 205.222.248.0/22 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T16:58:57Z last-modified: 2024-02-05T16:58:57Z source: ARIN rpki-ov-state: valid route: 205.222.248.0/24 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T16:57:35Z last-modified: 2024-02-05T16:57:35Z source: ARIN rpki-ov-state: valid route: 205.222.250.0/24 origin: AS32073 descr: Montgomery County Public Schools 850 Hungerford Dr., Rm. 41, Rockville MD 20850 United States admin-c: CMC167-ARIN tech-c: CMC167-ARIN tech-c: HOSEI1-ARIN tech-c: MODAK1-ARIN mnt-by: MNT-MCPS-2-Z created: 2024-02-05T16:56:08Z last-modified: 2024-02-05T16:56:08Z source: ARIN rpki-ov-state: valid