AS577 72.28.80.0/21 CIDR and IP Range Summary.ASN: 577 - Bell CanadaHost Count: 2046Addressable IPs: 204872.28.80.0/2472.28.81.0/2472.28.82.0/2472.28.83.0/2472.28.84.0/2472.28.85.0/2472.28.86.0/2472.28.87.0/24