These entries are queried from radb.net using whois, you can try my project getting these.
:AS14214 route: 74.205.160.0/19 descr: RR-RC-Minacs Inc-Detroit origin: AS14214 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.161.0/24 origin: AS14214 descr: Concentrix Corporation 34115 W.12 Mile Road Farmington Hills, MI, 48331 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T12:54:55Z last-modified: 2021-07-12T12:54:55Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.162.0/24 origin: AS14214 descr: Concentrix Corporation 34115 W.12 Mile Road Farmington Hills, MI, 48331 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T12:55:14Z last-modified: 2021-07-12T12:55:14Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.163.0/24 origin: AS14214 descr: Concentrix Corporation 34115 W.12 Mile Road Farmington Hills, MI, 48331 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T12:57:20Z last-modified: 2021-07-12T12:57:20Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.164.0/24 origin: AS14214 descr: Concentrix Corporation 34115 W.12 Mile Road Farmington Hills, MI, 48331 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-10-05T12:13:48Z last-modified: 2021-10-05T12:13:48Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.165.0/24 origin: AS14214 descr: Concentrix Corporation 34115 W.12 Mile Road Farmington Hills, MI, 48331 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T12:55:41Z last-modified: 2021-07-12T12:55:41Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.166.0/23 origin: AS14214 descr: Concentrix Corporation 1601 W Fountainhead Pkwy Tempe, AZ 85282 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T13:08:48Z last-modified: 2021-07-12T13:08:48Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.166.0/24 origin: AS14214 descr: Concentrix Corporation 1601 W Fountainhead Pkwy Tempe, AZ 85282 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T12:29:36Z last-modified: 2021-07-12T12:29:36Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.167.0/24 origin: AS14214 descr: Concentrix Corporation 1601 W Fountainhead Pkwy Tempe, AZ 85282 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T12:30:40Z last-modified: 2021-07-12T12:30:40Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.168.0/24 origin: AS14214 descr: Concentrix Corporation 3750 Monroe Avenue Pittsford, NY 14534 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T13:16:38Z last-modified: 2021-07-12T13:16:38Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.169.0/24 origin: AS14214 descr: Concentrix Corporation 14611 W Commerce Rd Daleville, IN 47334-9724 USA admin-c: MMU43-ARIN tech-c: MMU43-ARIN mnt-by: MNT-MINAC created: 2021-07-12T13:18:04Z last-modified: 2021-07-12T13:18:04Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.205.169.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS14214 remarks: Proxy add for customer Concentrix Services US, Inc mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20171207 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.194.231.0/24 origin: AS14214 descr: Concentrix Corporation 2006 Wade Hampton Blvd. Greenville, SC 29615 USA admin-c: DATAC19-ARIN tech-c: DATAC19-ARIN mnt-by: MNT-CC-3251 created: 2021-12-01T22:21:48Z last-modified: 2021-12-01T22:21:48Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.194.231.0/24 descr: Entry for Concentrix origin: AS14214 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180713 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.85.164.0/24 origin: AS14214 descr: Concentrix Corporation 2006 Wade Hampton Blvd Greenville, SC 29615 USA admin-c: DATAC19-ARIN tech-c: DATAC19-ARIN mnt-by: MNT-CC-3251 created: 2021-07-12T13:24:38Z last-modified: 2021-07-12T13:24:38Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.85.164.0/24 descr: Entry for Concentrix origin: AS14214 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180713 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source