AS21549 216.229.128.0/20 CIDR and IP Range Summary.ASN: 21549 - Iron Mountain IncHost Count: 4094Addressable IPs: 4096216.229.128.0/24216.229.129.0/24216.229.130.0/24216.229.131.0/24216.229.132.0/24216.229.133.0/24216.229.134.0/24216.229.135.0/24216.229.136.0/24216.229.137.0/24216.229.138.0/24216.229.139.0/24216.229.140.0/24216.229.141.0/24216.229.142.0/24216.229.143.0/24