Internet2 uses private ASNs for some production use but some of the splunk plugins don't seem to deal with private ASNs very well. Would you mind taking at both asninfo and geoasn2 with an eye towards returning default values such as "Private AS 65532"?
Request from Paul Howell:
Current reserved ranges are covered in RFC 6996.
Paul says 64.57.25.236 64.57.23.228 64.57.25.172 all are in ASN 65532.