These entries are queried from radb.net using whois, you can try my project getting these.
:AS6404 route: 164.55.0.0/16 descr: FactSet Research Systems Inc. origin: AS6404 notify: jyoung [at] factset.com mnt-by: MAINT-AS6404 changed: jyoung [at] factset.com 20120801 #21:06:07Z source: RADB last-modified: 2024-01-04T16:00:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.55.246.0/24 descr: FactSet Research Systems, Inc. origin: AS6404 mnt-by: LNC-MNT mnt-by: LNCD-MNT mnt-by: EUNX-MNT created: 2016-11-22T08:54:35Z last-modified: 2018-09-04T18:35:09Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.55.246.0/24 descr: proxy object for customer to build route filter origin: AS6404 mnt-by: MAINT-AS8220 changed: mark.borchardt [at] colt.net 20181015 #08:14:17Z 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: 164.55.248.0/24 descr: FactSet Research Systems Inc origin: AS6404 notify: net-support [at] ap.equinix.com notify: ap-noc [at] ap.equinix.com mnt-by: MAINT-EQUINIXPAC changed: jvaliente [at] ap.equinix.com 20160510 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.55.249.0/24 descr: Proxy-registered route object origin: AS6404 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20160810 source: RADB last-modified: 2023-11-13T15:49:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.55.249.0/24 descr: FactSet Research Systems Inc origin: AS6404 notify: net-support [at] ap.equinix.com notify: ap-noc [at] ap.equinix.com mnt-by: MAINT-EQUINIXPAC changed: mvillalobos [at] ap.equinix.com 20160722 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.55.250.0/24 descr: Proxy route object registered by AS38195 origin: AS6404 remarks: This route object was created by Superloop on behalf of a customer. notify: peering [at] superloop.com mnt-by: MAINT-AS38195 changed: peering [at] superloop.com 20230202 source: RADB last-modified: 2023-11-13T16:18:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.55.254.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS6404 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