These entries are queried from radb.net using whois, you can try my project getting these.
:AS15170 route: 8.3.216.0/24 descr: Spark-networks.com /24 L3 #1 origin: AS15170 notify: hostmaster [at] spark.net mnt-by: MAINT-SPARKNET changed: hostmaster [at] spark.net 20060627 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.16.64.0/19 descr: Spark-networks.com /19 ARIN origin: AS15170 notify: hostmaster [at] spark.net mnt-by: MAINT-SPARKNET changed: hostmaster [at] spark.net 20060710 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.16.64.0/20 descr: Spark-networks.com /20 ARIN #1 origin: AS15170 notify: hostmaster [at] spark.net mnt-by: MAINT-SPARKNET changed: hostmaster [at] spark.net 20131209 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.16.72.0/21 descr: Integra Telecom Route Object origin: AS15170 remarks: Integra Telecom Customer remarks: contacts per RFC2142: remarks: Abuse / UCE reports abuse [at] integratelecom.com remarks: SWIP Issues ipadmin [at] integratelecom.com notify: bgp [at] integra.net mnt-by: MAINT-AS7385 changed: dcblack [at] integratelecom.com 20160720 source: RADB last-modified: 2023-11-13T16:11:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.16.80.0/20 descr: Sparkx_Irv_Latisys origin: AS15170 mnt-by: MAINT-AS5693 changed: neteng [at] latisys.com 20131204 #21:14:47Z source: RADB last-modified: 2023-11-13T15:45:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.16.80.0/20 descr: Spark-networks.com /20 ARIN #2 origin: AS15170 notify: hostmaster [at] spark.net mnt-by: MAINT-SPARKNET changed: hostmaster [at] spark.net 20131203 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.70.32.0/24 descr: Route for Matchnet origin: AS15170 mnt-by: MATCHNET-MNT changed: daniel.deleau [at] level3.com 20040524 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.69.232.0/21 descr: Route for Matchnet origin: AS15170 mnt-by: MATCHNET-MNT changed: daniel.deleau [at] level3.com 20040524 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source