Autonomous System
AS18046 DongFong Technology Co. Ltd.
BusinessActiveTaiwanAPNIC
AS18046 (DONGFONG-TW) is a business network operated by DongFong Technology Co. Ltd. in Taiwan, registered with APNIC. It has 90 IPv4 prefixes with 197,888 addresses and 1 IPv6 prefix, which makes it the 1,318th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses197,888in 90 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#1,318of 82,200 active ASNs
Details
OrganizationDongFong Technology Co. Ltd.
AS nameDONGFONG-TW
Websitedongfong.com.tw
Country Taiwan (TW)
Network typeBusiness
RegistryAPNIC
Abuse contactix@dongfong.com.tw
Registered—
Last updated2025-11-06
IPv4 prefixes
90 prefixes · 197,888 addresses| Network | Addresses | First – last address |
|---|---|---|
| 87.80.0.0/16 | 65,536 | 87.80.0.0 – 87.80.255.255 |
| 78.105.0.0/18 | 16,384 | 78.105.0.0 – 78.105.63.255 |
| 78.105.64.0/19 | 8,192 | 78.105.64.0 – 78.105.95.255 |
| 119.15.224.0/19 | 8,192 | 119.15.224.0 – 119.15.255.255 |
| 159.117.64.0/19 | 8,192 | 159.117.64.0 – 159.117.95.255 |
| 61.65.208.0/20 | 4,096 | 61.65.208.0 – 61.65.223.255 |
| 61.67.32.0/20 | 4,096 | 61.67.32.0 – 61.67.47.255 |
| 101.3.192.0/20 | 4,096 | 101.3.192.0 – 101.3.207.255 |
| 116.50.32.0/20 | 4,096 | 116.50.32.0 – 116.50.47.255 |
| 121.50.176.0/20 | 4,096 | 121.50.176.0 – 121.50.191.255 |
| 150.116.16.0/20 | 4,096 | 150.116.16.0 – 150.116.31.255 |
| 159.117.64.0/20 | 4,096 | 159.117.64.0 – 159.117.79.255 |
| 159.117.80.0/20 | 4,096 | 159.117.80.0 – 159.117.95.255 |
| 187.79.224.0/20 | 4,096 | 187.79.224.0 – 187.79.239.255 |
| 61.65.232.0/21 | 2,048 | 61.65.232.0 – 61.65.239.255 |
| 116.50.32.0/21 | 2,048 | 116.50.32.0 – 116.50.39.255 |
| 116.50.40.0/21 | 2,048 | 116.50.40.0 – 116.50.47.255 |
| 119.15.208.0/21 | 2,048 | 119.15.208.0 – 119.15.215.255 |
| 119.15.224.0/21 | 2,048 | 119.15.224.0 – 119.15.231.255 |
| 119.15.232.0/21 | 2,048 | 119.15.232.0 – 119.15.239.255 |
| 119.15.240.0/21 | 2,048 | 119.15.240.0 – 119.15.247.255 |
| 119.15.248.0/21 | 2,048 | 119.15.248.0 – 119.15.255.255 |
| 121.50.176.0/21 | 2,048 | 121.50.176.0 – 121.50.183.255 |
| 43.248.16.0/22 | 1,024 | 43.248.16.0 – 43.248.19.255 |
| 101.0.224.0/22 | 1,024 | 101.0.224.0 – 101.0.227.255 |
87.80.0.0/16 78.105.0.0/18 78.105.64.0/19 119.15.224.0/19 159.117.64.0/19 61.65.208.0/20 61.67.32.0/20 101.3.192.0/20 116.50.32.0/20 121.50.176.0/20 150.116.16.0/20 159.117.64.0/20 159.117.80.0/20 187.79.224.0/20 61.65.232.0/21 116.50.32.0/21 116.50.40.0/21 119.15.208.0/21 119.15.224.0/21 119.15.232.0/21 119.15.240.0/21 119.15.248.0/21 121.50.176.0/21 43.248.16.0/22 101.0.224.0/22
The 25 largest of 90. The API and the database have all of them.
IPv6 prefixes
1 prefix- 2401:1780::/32
2401:1780::/32
Query AS18046 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS18046&key=YOUR_API_KEY"
Any address in its prefixes resolves to AS18046, with or without a key:
curl "https://api.ipapi.is/?q=87.80.0.1"
Largest networks in Taiwan
AS3462 Chunghwa Telecom Co., Ltd.16,360,192 IPv4 addressesAS1659 This aut-num object created as part of6,634,240 IPv4 addressesAS4780 Digital United Inc.5,156,608 IPv4 addressesAS9924 Taiwan Fixed Network CO.,LTD.4,313,600 IPv4 addressesAS9919 New Century InfoComm Tech Co., Ltd.3,134,976 IPv4 addressesAS9674 Far EastTone Telecommunication Co., Ltd.2,298,624 IPv4 addresses