These entries are queried from radb.net using whois, you can try my project getting these.
:AS9357 route: 49.8.1.0/24 descr: AS9357 origin: AS9357 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190806 #06:52:32Z source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 49.8.6.0/24 descr: AS9357 origin: AS9357 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190806 #06:52:32Z source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 49.8.8.0/24 descr: AS9357 origin: AS9357 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190806 #06:52:32Z source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.250.128.0/17 origin: AS9357 descr: FNC-NET (AS9357) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan admin-c: Takashi Tanaka tech-c: Yoshiki Miwa notify: noc [at] index.or.jp mnt-by: MAINT-AS9357 changed: noc [at] index.or.jp 20230508 #10:55:17Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: valid route: 133.250.128.0/17 descr: FNC-NET (AS9357) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan X-Keiro: noc [at] index.or.jp origin: AS9357 notify: noc [at] index.or.jp mnt-by: MAINT-AS9357 changed: noc [at] index.or.jp 20240201 source: JPIRR rpki-ov-state: valid route: 133.250.173.0/24 descr: Prolexic Technologies, Inc. origin: AS9357 mnt-by: MAINT-AS32787 changed: kyajima [at] akamai.com 20161115 #05:33:59Z source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: valid route: 133.250.175.0/24 origin: AS9357 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: tgoto [at] akamai.com 20220921 #07:33:23Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: valid route: 133.250.249.0/24 descr: Akamai Technologies,INC. origin: AS9357 notify: hostmaster [at] prolexic.com mnt-by: MAINT-AS32787 changed: vnangine [at] akamai.com 20210113 #17:25:45Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: valid route6: 2001:df0:401::/48 descr: FNC-NET (AS9357) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan X-Keiro: noc [at] index.or.jp origin: AS9357 notify: noc [at] index.or.jp mnt-by: MAINT-AS9357 changed: noc [at] index.or.jp 20240201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df0:401::/48 origin: AS9357 descr: FNC-NET (AS9357) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan admin-c: Takashi Tanaka tech-c: Yoshiki Miwa mnt-by: MAINT-AS9357 changed: noc [at] index.or.jp 20230508 #10:55:43Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source