AS3257 87.84.128.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204887.84.128.0/2487.84.129.0/2487.84.130.0/2487.84.131.0/2487.84.132.0/2487.84.133.0/2487.84.134.0/2487.84.135.0/24