AS3257 212.56.15.144/29 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 6Addressable IPs: 8 212.56.15.145212.56.15.146212.56.15.147212.56.15.148212.56.15.149212.56.15.150212.56.15.151212.56.15.152