| 61.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 61.19.0.0/16 | WHOIS (APNIC) | National Telecom Public Company Limited | TH |
| 61.19.0.0/18 | APNIC assigned | — | TH |
| 61.19.0.0/20 | WHOIS (APNIC) | CAT TELECOM Data Comm. Dept, Intrenet Office | TH |
| 61.19.16.0/20 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.32.0/20 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.48.0/21 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.16.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.20.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.20.0/22 | WHOIS (APNIC) | CAT Phitsanulok office , Phitsanulok 65000 | TH |
| 61.19.24.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.24.0/22 | WHOIS (APNIC) | 490/1 Petchakaserm Road Hadyai Songkhla 90110 | TH |
| 61.19.28.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.28.0/22 | WHOIS (APNIC) | CAT-Northeast | TH |
| 61.19.32.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.32.0/22 | WHOIS (APNIC) | 492 Changmai-Lumpang Road Muang changmai | TH |
| 61.19.36.0/22 | WHOIS (APNIC) | 525/9 Tumbon nakhonsawantok Muang Nakhonsawan 60000 | TH |
| 61.19.40.0/22 | WHOIS (APNIC) | 490/1162 M.4 Petkhaserm road muang Rajburi 70000 | TH |
| 61.19.44.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.44.0/22 | WHOIS (APNIC) | 124 M.10 south-Pattaya Road banglamung Pattaya 20260 | TH |
| 61.19.48.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.52.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.52.0/22 | WHOIS (APNIC) | 72 Charoenkrung Road Bangrak Bangkok THAILAND 10501 | TH |
| 61.19.56.0/22 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.60.0/22 | WHOIS (APNIC) | CAT TELECOM Data Comm. Dept, Intrenet Office | TH |
| 61.19.12.0/23 | WHOIS (APNIC) | 8 Cambridge Center Cambridge, MA 02142 USA | TH |
| 61.19.24.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.28.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.30.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.32.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.34.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.42.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.44.0/23 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.48.0/23 | WHOIS (APNIC) | Public Relation Department of THAILAND | TH |
| 61.19.50.0/23 | WHOIS (APNIC) | 72 Charoenkrung Road Bangrak Bangkok THAILAND 10501 | TH |
| 61.19.0.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.1.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.2.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.4.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.7.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.8.0/24 | WHOIS (APNIC) | 8 Cambridge Center Cambridge, MA 02142 USA | TH |
| 61.19.9.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.11.0/24 | WHOIS (APNIC) | 8 Cambridge Center Cambridge, MA 02142 USA | TH |
| 61.19.12.0/24 | BGP route | AS20940 Akamai International B.V. | — |
| 61.19.14.0/24 | BGP route | AS4651 National Telecom Public Company Limited | — |
| 61.19.16.0/24 | BGP route | AS137058 Aeronautical Radio of Thailand Ltd. | — |
| 61.19.16.0/24 | WHOIS (APNIC) | Aeronautical Radio of Thailand | TH |
| 61.19.18.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.19.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.21.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.22.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.23.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.26.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.27.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.30.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.31.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.38.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.40.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.41.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.42.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.43.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.46.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.47.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.57.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.57.0/24 | WHOIS (APNIC) | Department of Public Works and Town & Country Planning 218/1 RAMA 6 Road phayathai Bangkok THAILAND 10400 | TH |
| 61.19.58.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.58.0/24 | WHOIS (APNIC) | Bangkok Christian College 35 Pramuan Road Bangrak angkok THAILAND 10500 | TH |
| 61.19.59.0/24 | BGP route | AS9931 National Telecom Public Company Limited | — |
| 61.19.59.0/24 | WHOIS (APNIC) | Goverment Housing Bank 63 Rama IV Hweay-khwang Bangkok Thailand 10310 | TH |
| 61.19.54.0/26 | WHOIS (APNIC) | Department of Fisheries Kasetklang, Chatuchak Bangkok THAILAND 10900 | TH |
| 61.19.54.64/26 | WHOIS (APNIC) | Office Of the Rubber Replanting Aid Fund 67/25 Bangkunnon Road Bangkunnon Bangkoknoi Bangkok 10700 THAILAND | TH |
| 61.19.55.0/26 | WHOIS (APNIC) | Department of Fisheries Kasetklang, Chatuchak Bangkok THAILAND 10900 | TH |
| 61.19.55.64/26 | WHOIS (APNIC) | Pakkred School 128/37 Chaengwattana Rd, pakkred Nonthaburi Thailand 11120 | TH |
| 61.19.51.96/27 | WHOIS (APNIC) | Mass Rapid Transit Authority of Thailand 175 Rama IX Road, Huay Khwang Bangkok THAILAND | TH |
| 61.19.54.128/27 | WHOIS (APNIC) | Department of Disaster Prevention and Mitigation 3/12 U-Thona Nok Rd. Dusit Bangkok 10300 THAILAND | TH |
| 61.19.22.104/29 | WHOIS (APNIC) | Nurasuan University | TH |
| 61.19.32.56/29 | WHOIS (APNIC) | Nurasuan University 99 M00 9, Tambol Tapoh, Muang District, Phitsanulok 65000 | TH |