AS11971 148.168.208.0/21 CIDR and IP Range Summary.ASN: 11971 - Pfizer Inc.Host Count: 2046Addressable IPs: 2048148.168.208.0/24148.168.209.0/24148.168.210.0/24148.168.211.0/24148.168.212.0/24148.168.213.0/24148.168.214.0/24148.168.215.0/24