AS53712 134.42.144.0/21 CIDR and IP Range Summary.ASN: 53712 - Wellington Management Company LLPHost Count: 2046Addressable IPs: 2048134.42.144.0/24134.42.145.0/24134.42.146.0/24134.42.147.0/24134.42.148.0/24134.42.149.0/24134.42.150.0/24134.42.151.0/24