AS31920 216.21.176.0/21 CIDR and IP Range Summary.ASN: 31920 - Geetingsville Telephone Co. Inc.Host Count: 2046Addressable IPs: 2048216.21.176.0/24216.21.177.0/24216.21.178.0/24216.21.179.0/24216.21.180.0/24216.21.181.0/24216.21.182.0/24216.21.183.0/24