AS20057 107.81.8.0/21 CIDR and IP Range Summary.ASN: 20057 - AT&T Mobility LLCHost Count: 2046Addressable IPs: 2048107.81.8.0/24107.81.9.0/24107.81.10.0/24107.81.11.0/24107.81.12.0/24107.81.13.0/24107.81.14.0/24107.81.15.0/24