AS11957 216.250.16.0/20 CIDR and IP Range Summary.ASN: 11957 - NortonLifeLock Inc.Host Count: 4094Addressable IPs: 4096216.250.16.0/24216.250.17.0/24216.250.18.0/24216.250.19.0/24216.250.20.0/24216.250.21.0/24216.250.22.0/24216.250.23.0/24216.250.24.0/24216.250.25.0/24216.250.26.0/24216.250.27.0/24216.250.28.0/24216.250.29.0/24216.250.30.0/24216.250.31.0/24