AS135905 103.133.104.0/21 CIDR and IP Range Summary.ASN: 135905 - Vietnam Posts and Telecommunications GroupHost Count: 2046Addressable IPs: 2048103.133.104.0/24103.133.105.0/24103.133.106.0/24103.133.107.0/24103.133.108.0/24103.133.109.0/24103.133.110.0/24103.133.111.0/24