These entries are queried from radb.net using whois, you can try my project getting these.
:AS17936 route: 125.2.208.0/20 descr: CTK CIDR BLOCK 5 origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20240104 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 125.2.208.0/20 descr: CTK CIDR BLOCK 5 origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20230124 source: NTTCOM last-modified: 2023-01-24T09:14:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 125.2.208.0/20 origin: AS17936 descr: CTK CIDR BLOCK 5 admin-c: JP00027336 tech-c: JP00027336 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: as9354 [at] cnci.co.jp 20230124 #09:08:02Z source: RADB last-modified: 2023-11-13T16:13:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.104.112.0/20 descr: CTK CIDR BLOCK 1 origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.104.112.0/20 descr: CTK origin: AS17936 notify: w-ikuo [at] tv.ctk.ne.jp mnt-by: MAINT-AS17936 changed: ken [at] tv.ctk.ne.jp 20031110 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.104.112.0/20 descr: PACNET (proxy-registered route object) origin: AS17936 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some PACNET peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net if you have any Concerns regarding Spam/Abuses related to this object + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20100201 source: RADB last-modified: 2023-11-13T15:58:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.110.224.0/21 descr: CTK origin: AS17936 notify: nic-db [at] tv.ctk.ne.jp mnt-by: MAINT-AS17936 changed: nic-db [at] tv.ctk.ne.jp 20060320 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.110.224.0/21 descr: CTK CIDR BLOCK 2 origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.110.224.0/21 descr: PACNET (proxy-registered route object) origin: AS17936 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some ANC peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net if you have any Concerns regarding Spam/Abuses related to this object + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20100204 source: RADB last-modified: 2023-11-13T15:58:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.40.240.0/20 descr: CTK origin: AS17936 notify: w-ikuo [at] tv.ctk.ne.jp mnt-by: MAINT-AS17936 changed: kuninori [at] ntt.ocn.ne.jp 20011121 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.40.240.0/20 descr: CTK CIDR BLOCK 3 origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.40.240.0/20 descr: PACNET (proxy-registered route object) origin: AS17936 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some PACNET peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net if you have any Concerns regarding Spam/Abuses related to this object + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20100201 source: RADB last-modified: 2023-11-13T15:58:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.228.80.0/20 descr: PACNET (proxy-registered route object) origin: AS17936 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some PACNET peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net if you have any Concerns regarding Spam/Abuses related to this object + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20100201 source: RADB last-modified: 2023-11-13T15:58:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.228.80.0/20 descr: CTK CIDR BLOCK 4 origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.228.80.0/20 descr: CTK origin: AS17936 notify: w-ikuo [at] tv.ctk.ne.jp mnt-by: MAINT-AS17936 changed: kuninori [at] ntt.ocn.ne.jp 20020405 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2406:9900::/32 descr: CTK IPv6 Network origin: AS17936 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: nic [at] cnci.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2406:9900::/32 origin: AS17936 descr: CTK IPv6 Network admin-c: JP00027336 tech-c: JP00027336 notify: nic [at] cnci.co.jp mnt-by: MAINT-AS9354 changed: as9354 [at] cnci.co.jp 20200929 #03:00:16Z source: RADB last-modified: 2023-11-13T16:01:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source