AS4809 27.148.248.0/21 CIDR and IP Range Summary.ASN: 4809 - China Telecom Next Generation Carrier NetworkHost Count: 2046Addressable IPs: 204827.148.248.0/2427.148.249.0/2427.148.250.0/2427.148.251.0/2427.148.252.0/2427.148.253.0/2427.148.254.0/2427.148.255.0/24