Autonomous System
AS18413 Great Taipei Broadband Company Ltd.
ISPActiveTaiwanAPNIC
AS18413 (GBTC-TW) is an ISP network operated by Great Taipei Broadband Company Ltd. in Taiwan, registered with APNIC. It has 8 IPv4 prefixes with 12,800 addresses, which makes it the 8,904th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses12,800in 8 prefixes
IPv6 prefixes0none
Size rank#8,904of 82,200 active ASNs
Details
OrganizationGreat Taipei Broadband Company Ltd.
AS nameGBTC-TW
Websitegtbc.com.tw
Country Taiwan (TW)
Network typeISP
RegistryAPNIC
Abuse contactleoxue@gtbc.com.tw
Registered—
Last updated2025-11-06
IPv4 prefixes
8 prefixes · 12,800 addresses| Network | Addresses | First – last address |
|---|---|---|
| 61.65.192.0/20 | 4,096 | 61.65.192.0 – 61.65.207.255 |
| 61.67.0.0/20 | 4,096 | 61.67.0.0 – 61.67.15.255 |
| 61.67.0.0/22 | 1,024 | 61.67.0.0 – 61.67.3.255 |
| 61.67.4.0/22 | 1,024 | 61.67.4.0 – 61.67.7.255 |
| 61.67.8.0/22 | 1,024 | 61.67.8.0 – 61.67.11.255 |
| 61.67.12.0/22 | 1,024 | 61.67.12.0 – 61.67.15.255 |
| 61.67.4.0/24 | 256 | 61.67.4.0 – 61.67.4.255 |
| 61.67.9.0/24 | 256 | 61.67.9.0 – 61.67.9.255 |
61.65.192.0/20 61.67.0.0/20 61.67.0.0/22 61.67.4.0/22 61.67.8.0/22 61.67.12.0/22 61.67.4.0/24 61.67.9.0/24
IPv6 prefixes
No IPv6 prefixes.
Query AS18413 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=AS18413&key=YOUR_API_KEY"Any address in its prefixes resolves to AS18413, with or without a key:
curl "https://api.ipapi.is/?q=61.65.192.1"Largest networks in Taiwan
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