These entries are queried from radb.net using whois, you can try my project getting these.
:AS2615 route: 147.1.0.0/16 descr: Bechtel Network 1 origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20070607 #17:26:22(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.8.0/24 origin: AS2615 descr: Bechtel Networks Singapore mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #17:21:36Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.12.0/23 descr: Bechtel Networks origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20101115 #17:35:08Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.18.0/24 origin: AS2615 descr: Bechtel Networks Singapore remarks: Singapore mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #18:05:39Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.25.0/24 origin: AS2615 descr: NS&E Pool Ashburn, VA mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20240117 # 2255Z source: RADB last-modified: 2024-01-17T22:55:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.26.0/23 descr: Bechtel Network origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20101115 #17:35:40Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.28.0/24 descr: Bechtel Network origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20090309 #16:01:40Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.38.0/24 descr: Bechtel Networks origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20090309 #16:02:03Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.50.0/24 origin: AS2615 descr: Mobile Wireless NAT Pool Ashburn, VA mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20201113 #15:45:09Z source: RADB last-modified: 2023-11-13T16:02:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.50.0/24 origin: AS2615 descr: Bechtel Global 12011 Sunset Hills Road Reston VA 20190 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2024-01-17T22:51:18Z last-modified: 2024-01-17T22:51:18Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.66.0/23 origin: AS2615 descr: Bechtel Network - Chile notify: noc [at] bechtel.com mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20211129 #22:10:33Z source: RADB last-modified: 2023-11-13T16:08:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.73.0/24 origin: AS2615 descr: Bechtel Corporation 12011 Sunset Hills Road, Suite 110 Reston, Virginia 20190 United States mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #17:20:04Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.73.0/24 origin: AS2615 descr: Bechtel Corporation 12011 Sunset Hills Road Reston VA 20190 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2023-09-19T16:49:44Z last-modified: 2023-09-19T17:06:32Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.74.0/24 origin: AS2615 descr: Bechtel Business Services 5323 N 99th Ave Glendale, AZ 85305 United States mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #17:30:37Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.74.0/24 origin: AS2615 descr: Bechtel Business Services 5323 N 99th Ave Glendale, Arizona 85305 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2023-09-19T16:55:23Z last-modified: 2023-09-19T17:06:55Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.75.0/24 origin: AS2615 descr: Bechtel Energy 3000 Post Oak Blvd. Houston, Texas 77056 United States mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #17:39:12Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.75.0/24 origin: AS2615 descr: Bechtel Energy 3000 Post Oak Blvd. Houston, Texas 77056 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2023-09-19T17:04:05Z last-modified: 2023-09-19T17:08:09Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.76.0/24 origin: AS2615 descr: Bechtel National 100 Union Valley Road Oak Ridge, TN 37830-0350 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2023-09-19T17:05:41Z last-modified: 2023-09-19T17:05:41Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.76.0/24 origin: AS2615 descr: Bechtel National 100 Union Valley Road Oak Ridge, TN 37830-0350 United States mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #18:03:34Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.77.0/24 origin: AS2615 descr: Bechtel Global 12011 Sunset Hills Road Reston, Virginia 20190 United States mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20230919 #18:05:00Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.77.0/24 origin: AS2615 descr: Bechtel Global 12011 Sunset Hills Road Reston VA 20190 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2023-09-19T17:08:57Z last-modified: 2023-09-19T17:08:57Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.79.0/24 origin: AS2615 descr: Wireless Pool 21721 Filigree Court Ashburn, VA 20147 United States mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20240118 # 2045Z source: RADB last-modified: 2024-01-18T20:45:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.79.0/24 origin: AS2615 descr: Wireless Pool 21721 Filigree Court Ashburn, VA 20147 United States admin-c: MBM50-ARIN tech-c: CEI4-ARIN tech-c: MBM50-ARIN mnt-by: MNT-BECHTE-1-Z created: 2024-01-18T20:43:27Z last-modified: 2024-01-18T20:43:27Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.80.0/23 descr: Bechtel Networks origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20090309 #16:01:01Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.124.0/23 descr: BechtelNetwork124 origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20091014 #14:41:26Z source: RADB last-modified: 2023-11-13T15:40:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.140.0/24 descr: Bechtel Network origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20101115 #17:36:09Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.144.0/24 descr: Bechtel Asia Pacific origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20080429 #14:25:17Z source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.154.0/24 descr: Bechtel Network origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20101115 #17:36:55Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.210.0/24 descr: Bechtel Networks origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20090309 #15:58:38Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.215.0/24 descr: Bechtel Network origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20101115 #17:37:20Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.225.0/24 descr: Bechtel Networks origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20090309 #15:59:55Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.228.0/24 origin: AS2615 descr: INX New VPN Range mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20200806 #17:41:20Z source: RADB last-modified: 2023-11-13T16:01:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.232.0/24 descr: Bechtel Network Ashburn origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20070620 #15:44:16(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.233.0/24 descr: Bechtel Network Ashburn origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20070620 #15:44:36(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.234.0/24 descr: Bechtel Network Ashburn origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20070620 #15:45:08(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.235.0/24 origin: AS2615 descr: Bechtel Network Ashburn mnt-by: MAINT-AS2615 changed: ceindaco [at] bechtel.com 20201113 #15:44:06Z source: RADB last-modified: 2023-11-13T16:02:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.236.0/24 descr: Bechtel Networks origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20090421 #19:13:58Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.242.0/23 descr: Bechtel Network Ashburn origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20070620 #15:45:56(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.1.245.0/24 descr: Bechtel Ashburn Prefix 3 origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20080618 #21:14:50Z source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:4920::/32 descr: Bechtel IPV6 origin: AS2615 mnt-by: MAINT-AS2615 changed: dfzakrzw [at] bechtel.com 20110606 #16:56:35Z source: RADB last-modified: 2023-11-13T15:41:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source