AS17691 61.4.144.0/21 CIDR and IP Range Summary.ASN: 17691 - NDS Co. Ltd.Host Count: 2046Addressable IPs: 204861.4.144.0/2461.4.145.0/2461.4.146.0/2461.4.147.0/2461.4.148.0/2461.4.149.0/2461.4.150.0/2461.4.151.0/24