AS11971 148.168.88.0/21 CIDR and IP Range Summary.ASN: 11971 - Pfizer Inc.Host Count: 2046Addressable IPs: 2048148.168.88.0/24148.168.89.0/24148.168.90.0/24148.168.91.0/24148.168.92.0/24148.168.93.0/24148.168.94.0/24148.168.95.0/24