These entries are queried from radb.net using whois, you can try my project getting these.
:AS53712 route: 134.42.0.0/16 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53712 remarks: Proxy add for EDIA customer Wellington Management mnt-by: MAINT-AS7922 changed: jeffrey_mitten2 [at] cable.comcast.com 20160711 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: 134.42.0.0/17 descr: Wellington Management origin: AS53712 mnt-by: MAINT-AS27506 changed: celsasser [at] lightower.com 20141111 source: RADB last-modified: 2023-11-13T15:46:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.96.0/22 descr: Prolexic Technologies, Inc. origin: AS53712 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: mahernan [at] prolexic.com 20150826 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.100.0/23 descr: Prolexic Technologies, Inc. origin: AS53712 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: mahernan [at] prolexic.com 20150826 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.112.0/22 descr: Prolexic Technologies, Inc. origin: AS53712 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: mahernan [at] prolexic.com 20150826 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.118.0/23 descr: Akamai Technologies, Inc. origin: AS53712 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: bdaly [at] akamai.com 20150826 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.119.0/24 descr: Prolexic Technologies, Inc. origin: AS53712 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: mahernan [at] prolexic.com 20150826 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.120.0/23 descr: Prolexic Technologies, Inc. origin: AS53712 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: mahernan [at] prolexic.com 20150826 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.128.0/18 descr: Wellington Management origin: AS53712 mnt-by: MAINT-AS27506 changed: celsasser [at] lightower.com 20141111 source: RADB last-modified: 2023-11-13T15:46:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.192.0/19 descr: Wellington Management origin: AS53712 mnt-by: MAINT-AS27506 changed: celsasser [at] lightower.com 20141111 source: RADB last-modified: 2023-11-13T15:46:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.224.0/24 origin: AS53712 descr: HKT (Customer Route) mnt-by: MAINT-AS4515 changed: chi-fai.law [at] pccw.com 20221127 #02:28:38Z source: RADB last-modified: 2023-11-13T16:13:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.229.0/24 descr: proxy object for customer to build route filter origin: AS53712 mnt-by: MAINT-AS8220 changed: mark.borchardt [at] colt.net 20181011 #07:25:07Z source: RADB last-modified: 2023-11-13T15:54:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.232.0/24 origin: AS53712 descr: Wellington Global Investment Management Limited 17F, Two International Finance Centre 8 Finance Street mnt-by: MAINT-WGIML-HK last-modified: 2021-03-26T17:53:09Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.233.0/24 descr: Proxy route object registered by AS2764 origin: AS53712 remarks: This route object was created by AAPT on behalf of a customer. remarks: As some of AAPTs upstream networks filter based on IRR objects, remarks: this route object has been created to ensure that the advertisement remarks: of this prefix is not rejected. notify: routing.shared [at] aapt.com.au mnt-by: MAINT-AS2764 changed: nobody [at] aapt.com.au 20221208 source: RADB last-modified: 2023-11-13T16:16:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.42.240.0/24 descr: Akamai Technologies, Inc origin: AS53712 mnt-by: MAINT-AS32787 changed: ameyer [at] akamai.com 20210503 #23:02:14Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source