AS16839 148.139.112.0/21 CIDR and IP Range Summary.ASN: 16839 - ServiceNow Inc.Host Count: 2046Addressable IPs: 2048148.139.112.0/24148.139.113.0/24148.139.114.0/24148.139.115.0/24148.139.116.0/24148.139.117.0/24148.139.118.0/24148.139.119.0/24