These entries are queried from radb.net using whois, you can try my project getting these.
:AS135416 route: 103.218.164.0/24 descr: Route Object origin: AS135416 mnt-by: MAINT-CEL-BD mnt-by: MAINT-CEL-BD country: BD mnt-lower: MAINT-CEL-BD mnt-routes: MAINT-CEL-BD last-modified: 2016-05-15T11:28:34Z source: APNIC rpki-ov-state: valid route6: 2402:bc40::/32 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:26Z source: APNIC rpki-ov-state: valid route6: 2402:bc40::/33 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:27Z source: APNIC rpki-ov-state: valid route6: 2402:bc40::/34 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:28Z source: APNIC rpki-ov-state: valid route6: 2402:bc40::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:30Z source: APNIC rpki-ov-state: valid route6: 2402:bc40::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:30Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:1000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:31Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:2000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:32Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:2000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:32Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:3000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:33Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:4000::/34 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:33Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:4000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:34Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:4000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:35Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:5000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:35Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:6000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:36Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:6000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:37Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:7000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:37Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:8000::/33 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:38Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:8000::/34 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:39Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:8000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:39Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:8000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:40Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:9000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:40Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:a000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:41Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:a000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:42Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:b000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:42Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:c000::/34 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:43Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:c000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:44Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:c000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:44Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:d000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:45Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:e000::/35 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:46Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:e000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:47Z source: APNIC rpki-ov-state: valid route6: 2402:bc40:f000::/36 origin: AS135416 descr: Confidence Electric Ltd. Nayapur, Barabo, Sonargaon, Narayangonj mnt-by: MAINT-CEL-BD last-modified: 2019-11-24T09:05:47Z source: APNIC rpki-ov-state: valid