AS19226 139.229.136.0/21 CIDR and IP Range Summary.ASN: 19226 - NSF's NoirlabHost Count: 2046Addressable IPs: 2048139.229.136.0/24139.229.137.0/24139.229.138.0/24139.229.139.0/24139.229.140.0/24139.229.141.0/24139.229.142.0/24139.229.143.0/24