These entries are queried from radb.net using whois, you can try my project getting these.
:AS53828 route: 45.43.240.0/20 descr: Nitel origin: AS53828 remarks: Nitel - Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20150406 source: ARIN rpki-ov-state: valid route: 45.61.16.0/20 descr: Nitel origin: AS53828 remarks: Nitel - Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20141008 source: ARIN rpki-ov-state: valid route: 64.63.128.0/18 descr: Nitel - Aggregate origin: AS53828 remarks: Nitel Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20170223 source: ARIN rpki-ov-state: valid route: 64.191.64.0/18 origin: AS53828 descr: Nitel Agg admin-c: EDMON4-ARIN tech-c: HUGOA2-ARIN tech-c: JAH146-ARIN tech-c: JONES2883-ARIN tech-c: PIFKO-ARIN tech-c: SUNDB1-ARIN tech-c: TRUDE100-ARIN mnt-by: MNT-NETWO-107 created: 2022-02-18T22:26:38Z last-modified: 2023-09-13T15:16:23Z source: ARIN rpki-ov-state: valid route: 64.237.112.0/20 descr: Nitel - Aggregate origin: AS53828 remarks: Nitel Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20111230 source: ARIN rpki-ov-state: valid route: 65.182.167.0/24 descr: Nitel - Aggregate origin: AS53828 mnt-by: LEVEL3-MNT changed: lindon.arthur [at] level3.com 20130227 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.67.208.0/20 descr: Nitel - Aggregate origin: AS53828 mnt-by: LEVEL3-MNT changed: lindon.arthur [at] level3.com 20130227 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.22.86.0/24 descr: Nitel - Aggregate origin: AS53828 mnt-by: LEVEL3-MNT changed: lindon.arthur [at] level3.com 20130227 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.85.96.0/19 descr: Nitel - Aggregate origin: AS53828 remarks: Nitel Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20111230 source: ARIN rpki-ov-state: valid route: 96.8.96.0/20 origin: AS53828 descr: Nitel Aggregate block admin-c: EDMON4-ARIN tech-c: HUGOA2-ARIN tech-c: JAH146-ARIN tech-c: JONES2883-ARIN tech-c: PIFKO-ARIN tech-c: SUNDB1-ARIN tech-c: TRUDE100-ARIN mnt-by: MNT-NETWO-107 created: 2022-02-17T16:31:56Z last-modified: 2023-09-13T15:16:23Z source: ARIN rpki-ov-state: valid route: 104.218.104.0/22 origin: AS53828 descr: Nitel Agg admin-c: EDMON4-ARIN tech-c: HUGOA2-ARIN tech-c: JAH146-ARIN tech-c: JONES2883-ARIN tech-c: PIFKO-ARIN tech-c: SUNDB1-ARIN tech-c: TRUDE100-ARIN mnt-by: MNT-NETWO-107 created: 2022-02-18T22:07:57Z last-modified: 2023-09-13T15:16:23Z source: ARIN rpki-ov-state: valid route: 104.245.24.0/21 descr: Nitel origin: AS53828 remarks: Nitel - Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20141008 source: ARIN rpki-ov-state: valid route: 142.44.64.0/18 origin: AS53828 descr: Nitel AGG admin-c: EDMON4-ARIN tech-c: HUGOA2-ARIN tech-c: JAH146-ARIN tech-c: JONES2883-ARIN tech-c: PIFKO-ARIN tech-c: SUNDB1-ARIN tech-c: TRUDE100-ARIN mnt-by: MNT-NETWO-107 created: 2022-02-18T21:52:17Z last-modified: 2023-09-13T15:16:23Z source: ARIN rpki-ov-state: valid route: 144.91.176.0/20 descr: Nitel - Aggregate origin: AS53828 notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20190906 source: ARIN rpki-ov-state: valid route: 144.91.192.0/18 descr: Nitel - Aggregate origin: AS53828 notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20190906 source: ARIN rpki-ov-state: valid route: 172.98.96.0/19 descr: Nitel origin: AS53828 remarks: Nitel - Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20150618 source: ARIN rpki-ov-state: valid route: 199.15.184.0/22 origin: AS53828 descr: That this CalvertHealth block will be advertised via Nitel’s AS Starting Thursday Morning 6/29/23 after 2am EST admin-c: HAWKI11-ARIN tech-c: GETMA-ARIN tech-c: HAWKI11-ARIN mnt-by: MNT-CALVE-5 created: 2023-06-26T11:05:26Z last-modified: 2023-06-26T11:05:26Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.238.52.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS53828 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.5.64.0/19 descr: Nitel AGG origin: AS53828 remarks: NItel notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20170824 source: ARIN rpki-ov-state: valid route: 207.200.192.0/19 descr: Nitel - Aggregate origin: AS53828 remarks: Nitel Aggregate notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20111230 source: ARIN rpki-ov-state: valid route: 208.87.104.0/24 origin: AS53828 descr: 1333 H St NW 100E Washington DC 20005 United States remarks: Nitel Allocation admin-c: NOC2953-ARIN tech-c: NOC2953-ARIN mnt-by: MNT-CAP-42 created: 2023-12-27T19:42:10Z last-modified: 2023-12-27T19:42:10Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.40.0.0/19 descr: Nitel - Aggregate origin: AS53828 notify: esundberg [at] nitelusa.com mnt-by: MNT-NETWO-107 changed: esundberg [at] nitelusa.com 20190327 source: ARIN rpki-ov-state: valid route6: 2605:a380::/32 origin: AS53828 descr: Nitel Agg admin-c: EDMON4-ARIN tech-c: HUGOA2-ARIN tech-c: JAH146-ARIN tech-c: JONES2883-ARIN tech-c: PIFKO-ARIN tech-c: SUNDB1-ARIN tech-c: TRUDE100-ARIN mnt-by: MNT-NETWO-107 created: 2022-02-18T22:29:03Z last-modified: 2023-09-13T15:16:23Z source: ARIN rpki-ov-state: valid