These entries are queried from radb.net using whois, you can try my project getting these.
:AS3742 route: 63.249.0.0/19 descr: Semaphore Corporation origin: AS3742 mnt-by: MAINT-NTTCOM-RA changed: kpack [at] us.ntt.net 20080710 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.249.0.0/19 descr: Semaphore Corporation origin: AS3742 notify: registry-updates [at] semaphore.com mnt-by: MAINT-AS3742 changed: troy [at] nack.net 20041129 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.249.0.0/19 descr: Proxy Registration noc [at] spectrumnet.us for questions origin: AS3742 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20080709 #07:31:19Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.152.45.0/24 descr: Proxy Registration noc [at] spectrumnet.us for questions origin: AS3742 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20080709 #07:37:30Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.147.208.0/20 descr: Spectrum Networks LLC proxy registration noc [at] spectrumnet.us for removal origin: AS3742 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20080709 #16:47:40Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.208.40.0/21 descr: Spectrum Networks LLC proxy registration noc [at] spectrumnet.us for removal origin: AS3742 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20080709 #16:50:35Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.208.40.0/21 descr: Semaphore Corporation origin: AS3742 notify: registry-updates [at] semaphore.com mnt-by: MAINT-AS3742 changed: troy [at] nack.net 20041129 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.221.128.0/18 descr: Spectrum Networks LLC proxy registration noc [at] spectrumnet.us for removal origin: AS3742 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20080709 #16:52:58Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.221.128.0/18 descr: Semaphore Corporation origin: AS3742 notify: registry-updates [at] semaphore.com mnt-by: MAINT-AS3742 changed: troy [at] nack.net 20041129 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.221.161.0/24 descr: Proxy-registered route object for Semaphore Corporation origin: AS3742 notify: registry-updates [at] semaphore.com remarks: =20 remarks: This route object is for a Semaphore Corporation customer remarks: route which is being exported by this origin AS. remarks: Route object questions: noc [at] semaphore.com remarks: =20 mnt-by: MAINT-AS3742 changed: dylanv [at] semaphore.com 20180523 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.220.196.0/24 descr: Spectrum Networks Proxy registration origin: AS3742 mnt-by: MAINT-AS11404 changed: wolson [at] spectrumnet.us 20130321 #17:03:02Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.220.197.0/24 descr: Spectrum Networks Proxy registration origin: AS3742 mnt-by: MAINT-AS11404 changed: wolson [at] spectrumnet.us 20130321 #17:02:21Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.220.198.0/24 descr: Spectrum Networks Proxy registration origin: AS3742 mnt-by: MAINT-AS11404 changed: wolson [at] spectrumnet.us 20130321 #17:03:38Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:5d8::/32 descr: Proxy Object for AS2914 Downstream Peer origin: AS3742 remarks: contact ce-ipadmin [at] us.ntt.net to request removal mnt-by: MAINT-NTTCOM-RA changed: bfoust [at] us.ntt.net 20100614 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:5d8::/32 descr: Semaphore Corporation origin: AS3742 notify: registry-updates [at] semaphore.com mnt-by: MAINT-AS3742 changed: dylanv [at] semaphore.com 20200803 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source