AS21880 216.198.24.0/21 CIDR and IP Range Summary.ASN: 21880 - Zendesk Inc.Host Count: 2046Addressable IPs: 2048216.198.24.0/24216.198.25.0/24216.198.26.0/24216.198.27.0/24216.198.28.0/24216.198.29.0/24216.198.30.0/24216.198.31.0/24