These entries are queried from radb.net using whois, you can try my project getting these.
:AS15148 route: 74.123.152.0/22 descr: Proxy fbo Blackbaud Inc(AS15148) origin: AS15148 remarks: Windstream Footprint mnt-by: MAINT-AS7029 changed: Christopher.Canevit [at] windstream.com 20180206 source: RADB last-modified: 2023-11-13T15:53:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.123.152.0/23 origin: AS15148 descr: BLACKBAUD, INC admin-c: Andrew Ntuyo tech-c: Andrew Ntuyo notify: neteng [at] elementcritical.com mnt-by: CENTRALCOLO changed: antuyo [at] elementcritical.com 20220205 #14:11:38Z source: RADB last-modified: 2023-11-13T16:09:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.59.51.0/24 origin: AS15148 descr: Blackbaud, Inc. mnt-by: MAINT-AS2711 changed: chris.hansford [at] spiritcom.com 20190306 #03:02:48Z source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.235.192.0/20 descr: Proxy fbo Blackbaud Inc(AS15148) origin: AS15148 remarks: Windstream Footprint mnt-by: MAINT-AS7029 changed: Christopher.Canevit [at] windstream.com 20180206 source: RADB last-modified: 2023-11-13T15:53:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.235.192.0/22 descr: Proxy-registered route object origin: AS15148 remarks: auto-generated route object remarks: this next line gives the robot something to recognize remarks: L'enfer, c'est les autres remarks: remarks: This route object is for a Level 3 customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found, and remarks: since some Level 3 peers filter based on these objects remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact dl-routing [at] lumen.com if you have any remarks: questions regarding this object. mnt-by: LEVEL3-MNT changed: roy [at] Level3.net 20061101 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.235.192.0/24 origin: AS15148 descr: Blackbaud, Inc. mnt-by: MAINT-AS2711 changed: chris.hansford [at] spiritcom.com 20190208 #15:29:39Z source: RADB last-modified: 2023-11-13T15:55:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.235.193.0/24 origin: AS15148 descr: Blackbaud, Inc. mnt-by: MAINT-AS2711 changed: chris.hansford [at] spiritcom.com 20190208 #15:30:46Z source: RADB last-modified: 2023-11-13T15:55:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.235.194.0/24 origin: AS15148 descr: BLACKBAUD, INC admin-c: Andrew Ntuyo tech-c: Andrew Ntuyo notify: neteng [at] elementcritical.com mnt-by: CENTRALCOLO changed: antuyo [at] elementcritical.com 20220131 #00:04:24Z source: RADB last-modified: 2023-11-13T16:09:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.235.195.0/24 origin: AS15148 descr: BLACKBAUD, INC admin-c: Andrew Ntuyo tech-c: Andrew Ntuyo notify: neteng [at] elementcritical.com mnt-by: CENTRALCOLO changed: antuyo [at] elementcritical.com 20220131 #00:06:56Z source: RADB last-modified: 2023-11-13T16:09:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source