Central Peru (southern Huánuco) on eastern Andean slope, including a few isolated montane areas to east, to southern and south-eastern Bolivia (Chuquisaca, Santa Cruz).
 
Population
Estimated population is unknown (2010).
Blue-banded Toucanet (Aulacorhynchus coeruleicinctis) [XC97350]
by Renzo P. Piana from Above Rocotal, Kos\u00f1ipata Road, Cusco, Peru (song)
Blue-banded Toucanet (Aulacorhynchus coeruleicinctis) [XC348682]
by Jacob Wijpkema from Above San Antonio, Satipo, Jun\u00edn, Peru (call)
Subspecies
Forms a superspecies with Crimson-rumped Toucanet (Aulacorhynchus haematopygus) and Yellow-browed Toucanet (Aulacorhynchus huallagae), and possibly closer to latter. Putative subspecies borealis of north-central Peru (Junín) considered invalid, as appears to be based on individual, not geographical, variation. Species name often listed as coeruleicinctus, but original spelling, coeruleicinctis, must stand.