AS3758 165.21.0.0/20 CIDR and IP Range Summary.ASN: 3758 - SINGNET SingNetHost Count: 4094Addressable IPs: 4096165.21.0.0/24165.21.1.0/24165.21.2.0/24165.21.3.0/24165.21.4.0/24165.21.5.0/24165.21.6.0/24165.21.7.0/24165.21.8.0/24165.21.9.0/24165.21.10.0/24165.21.11.0/24165.21.12.0/24165.21.13.0/24165.21.14.0/24165.21.15.0/24