These entries are queried from radb.net using whois, you can try my project getting these.
:AS77 route: 128.244.0.0/16 descr: JHUAPL descr: 11100 Johns Hopkins Rd descr: Laurel, MD 20723 descr: US origin: AS77 mnt-by: MNT-JHUAPL changed: networks [at] zenedge.com 20180726 source: ARIN rpki-ov-state: valid route: 204.9.128.0/21 descr: JHUAPL descr: 11100 Johns Hopkins Rd descr: Laurel, MD 20723 descr: US origin: AS77 mnt-by: MNT-JHUAPL changed: networks [at] zenedge.com 20180726 source: ARIN rpki-ov-state: valid route: 204.9.128.0/24 origin: AS77 descr: Proxy-registered route object for JHU/APL admin-c: Mid-Atlantic Crossroads tech-c: Mid-Atlantic Crossroads remarks: This route object is for a Mid-Atlantic Crossroads customer route mnt-by: MAINT-AS10886 changed: dave [at] maxgigapop.net 20211021 source: RADB last-modified: 2023-11-13T16:08:34Z rpki-ov-state: valid