AS3257 87.86.80.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204887.86.80.0/2487.86.81.0/2487.86.82.0/2487.86.83.0/2487.86.84.0/2487.86.85.0/2487.86.86.0/2487.86.87.0/24