Autonomous System
AS45083 China UNICOM, Beijing Branch
ISPActiveChinaAPNIC
AS45083 (BGTELECOM) is an ISP network operated by China UNICOM, Beijing Branch in China, registered with APNIC. It has 52 IPv4 prefixes with 181,248 addresses, which makes it the 1,403rd largest of 82,558 active autonomous systems by IPv4 space.
IPv4 addresses181,248in 52 prefixes
IPv6 prefixes0none
Size rank#1,403of 82,558 active ASNs
Details
OrganizationChina UNICOM, Beijing Branch
AS nameBGTELECOM
Websitechinaunicom.com.cn
Country China (CN)
Network typeISP
RegistryAPNIC
Abuse contactshangyq1@chinaunicom.cn
Registered—
Last updated2025-11-27
IPv4 prefixes
52 prefixes · 181,248 addresses| Network | Addresses | First – last address |
|---|---|---|
| 1.45.0.0/16 | 65,536 | 1.45.0.0 – 1.45.255.255 |
| 1.45.0.0/17 | 32,768 | 1.45.0.0 – 1.45.127.255 |
| 1.45.128.0/17 | 32,768 | 1.45.128.0 – 1.45.255.255 |
| 1.45.16.0/22 | 1,024 | 1.45.16.0 – 1.45.19.255 |
| 1.45.20.0/22 | 1,024 | 1.45.20.0 – 1.45.23.255 |
| 1.45.24.0/22 | 1,024 | 1.45.24.0 – 1.45.27.255 |
| 1.45.28.0/22 | 1,024 | 1.45.28.0 – 1.45.31.255 |
| 1.45.32.0/22 | 1,024 | 1.45.32.0 – 1.45.35.255 |
| 1.45.36.0/22 | 1,024 | 1.45.36.0 – 1.45.39.255 |
| 1.45.40.0/22 | 1,024 | 1.45.40.0 – 1.45.43.255 |
| 1.45.44.0/22 | 1,024 | 1.45.44.0 – 1.45.47.255 |
| 1.45.48.0/22 | 1,024 | 1.45.48.0 – 1.45.51.255 |
| 1.45.52.0/22 | 1,024 | 1.45.52.0 – 1.45.55.255 |
| 1.45.56.0/22 | 1,024 | 1.45.56.0 – 1.45.59.255 |
| 1.45.60.0/22 | 1,024 | 1.45.60.0 – 1.45.63.255 |
| 1.45.64.0/22 | 1,024 | 1.45.64.0 – 1.45.67.255 |
| 1.45.68.0/22 | 1,024 | 1.45.68.0 – 1.45.71.255 |
| 1.45.72.0/22 | 1,024 | 1.45.72.0 – 1.45.75.255 |
| 1.45.76.0/22 | 1,024 | 1.45.76.0 – 1.45.79.255 |
| 1.45.80.0/22 | 1,024 | 1.45.80.0 – 1.45.83.255 |
| 1.45.84.0/22 | 1,024 | 1.45.84.0 – 1.45.87.255 |
| 1.45.88.0/22 | 1,024 | 1.45.88.0 – 1.45.91.255 |
| 1.45.92.0/22 | 1,024 | 1.45.92.0 – 1.45.95.255 |
| 1.45.96.0/22 | 1,024 | 1.45.96.0 – 1.45.99.255 |
| 1.45.100.0/22 | 1,024 | 1.45.100.0 – 1.45.103.255 |
1.45.0.0/16 1.45.0.0/17 1.45.128.0/17 1.45.16.0/22 1.45.20.0/22 1.45.24.0/22 1.45.28.0/22 1.45.32.0/22 1.45.36.0/22 1.45.40.0/22 1.45.44.0/22 1.45.48.0/22 1.45.52.0/22 1.45.56.0/22 1.45.60.0/22 1.45.64.0/22 1.45.68.0/22 1.45.72.0/22 1.45.76.0/22 1.45.80.0/22 1.45.84.0/22 1.45.88.0/22 1.45.92.0/22 1.45.96.0/22 1.45.100.0/22
The 25 largest of 52. The API and the database have all of them.
IPv6 prefixes
No IPv6 prefixes.
Query AS45083 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=AS45083&key=YOUR_API_KEY"Any address in its prefixes resolves to AS45083, with or without a key:
curl "https://api.ipapi.is/?q=1.45.0.1"Largest networks in China
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