| 203.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 203.162.0.0/16 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.0.0/16 | WHOIS (APNIC) | Vietnam Posts and Telecommunications Group | VN |
| 203.162.64.0/18 | APNIC assigned | — | VN |
| 203.162.96.0/19 | WHOIS (APNIC) | VietNam Data Communication Company | VN |
| 203.162.104.0/21 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.112.0/21 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.120.0/21 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.96.0/23 | BGP route | AS7643 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.100.0/23 | BGP route | AS7643 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.102.0/23 | BGP route | AS7643 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.104.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.106.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.114.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.118.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.120.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.122.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.124.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.126.0/23 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.96.0/24 | BGP route | AS7643 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.108.0/24 | WHOIS (APNIC) | dialuptiengiang-net | VN |
| 203.162.111.0/24 | WHOIS (APNIC) | dialupangiang-net | VN |
| 203.162.120.0/24 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.121.0/24 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.123.0/24 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.126.0/24 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.127.0/24 | BGP route | AS45899 Vietnam Posts and Telecommunications (VNPT) | — |
| 203.162.97.64/26 | WHOIS (APNIC) | Tp.hcm_ Center for Science Technology Information | VN |
| 203.162.98.64/26 | WHOIS (APNIC) | Saigonsoft company | VN |
| 203.162.98.128/26 | WHOIS (APNIC) | Saigonsoft company | VN |
| 203.162.97.32/27 | WHOIS (APNIC) | Cong ty Dich vu Vien Thong GPC | VN |
| 203.162.97.128/27 | WHOIS (APNIC) | SLD Telecom34 Le Duan st., Hanoi, Vietnam | VN |
| 203.162.97.160/27 | WHOIS (APNIC) | SLD Telecom | VN |
| 203.162.98.32/27 | WHOIS (APNIC) | Saigonsoft company | VN |
| 203.162.100.32/27 | WHOIS (APNIC) | CDIT | VN |
| 203.162.99.192/28 | WHOIS (APNIC) | Public Internet Center | VN |
| 203.162.102.16/28 | WHOIS (APNIC) | Eagle Global Logistics | VN |
| 203.162.102.32/28 | WHOIS (APNIC) | Mercedes-Benz Vietnam | VN |
| 203.162.102.48/28 | WHOIS (APNIC) | Coast Phong Nhu Co.Ltd | VN |
| 203.162.102.64/28 | WHOIS (APNIC) | Schlumberger Vietnam Services | VN |
| 203.162.102.80/28 | WHOIS (APNIC) | Cofiva | VN |
| 203.162.102.96/28 | WHOIS (APNIC) | Exxonmobile Unique Vietnam | VN |
| 203.162.102.128/28 | WHOIS (APNIC) | EIS | VN |
| 203.162.102.144/28 | WHOIS (APNIC) | Nippon paint VN | VN |
| 203.162.102.160/28 | WHOIS (APNIC) | Paragon Solution Viet Nam | VN |
| 203.162.102.176/28 | WHOIS (APNIC) | SAFI | VN |
| 203.162.102.192/28 | WHOIS (APNIC) | Bayer Agritech Saigon | VN |
| 203.162.102.208/28 | WHOIS (APNIC) | Long An Post and Telecommunication | VN |
| 203.162.102.224/28 | WHOIS (APNIC) | Dar May Vietnam | VN |
| 203.162.104.16/28 | WHOIS (APNIC) | Palace Industry VN | VN |
| 203.162.104.32/28 | WHOIS (APNIC) | Cuc Thong Ke Binh Thuan | VN |
| 203.162.104.48/28 | WHOIS (APNIC) | RMIT International University Vietnam | VN |
| 203.162.104.64/28 | WHOIS (APNIC) | Alstom Holdings Representative Office | VN |
| 203.162.104.96/28 | WHOIS (APNIC) | Slumberger Viet Nam | VN |
| 203.162.104.112/28 | WHOIS (APNIC) | Nidec Tosok Viet Nam | VN |
| 203.162.104.128/28 | WHOIS (APNIC) | Sanofi Synthelabo Viet Nam | VN |
| 203.162.104.144/28 | WHOIS (APNIC) | SamSung Engineering | VN |
| 203.162.104.160/28 | WHOIS (APNIC) | Silicon Design Solution Viet Nam | VN |
| 203.162.104.176/28 | WHOIS (APNIC) | Romona International Ltd | VN |
| 203.162.104.192/28 | WHOIS (APNIC) | Jyeshing Industrial Ltd | VN |
| 203.162.104.208/28 | WHOIS (APNIC) | NHNGPTNT-NET | VN |
| 203.162.115.64/28 | WHOIS (APNIC) | Huyndai Vinashin | VN |
| 203.162.115.80/28 | WHOIS (APNIC) | TTDIDONGKV3-NET | VN |
| 203.162.125.32/28 | WHOIS (APNIC) | Vietnam VOV | VN |
| 203.162.125.48/28 | WHOIS (APNIC) | AUF | VN |
| 203.162.125.64/28 | WHOIS (APNIC) | Hai Phong Technology Software Center | VN |
| 203.162.125.80/28 | WHOIS (APNIC) | FPT software center | VN |
| 203.162.125.96/28 | WHOIS (APNIC) | UBNDTHAIPHONG-NET | VN |
| 203.162.125.144/28 | WHOIS (APNIC) | EVN Vietnam | VN |
| 203.162.125.160/28 | WHOIS (APNIC) | Hanoi CTT company | VN |
| 203.162.125.176/28 | WHOIS (APNIC) | Vietnam Mobile System | VN |
| 203.162.125.208/28 | WHOIS (APNIC) | The Capacity for Effective Govermance Facility | VN |