http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=10030
https://www.planespotters.net/photo/093323/10030-central-intelligence-agency-cia-gulfstream-aerospace-g-iv-gulfstream-iv
No country code on the tail. Article from 2017
http://www.newshub.co.nz/home/new-zealand/2017/04/cia-plane-spotted-in-wellington.html