Autonomous System
AS133111 CERNET New Technology Co., Ltd
ISPActiveChinaAPNIC
AS133111 (CNT-northChina) is an ISP network operated by CERNET New Technology Co., Ltd in China, registered with APNIC. It has 8 IPv4 prefixes with 27,392 addresses and 3 IPv6 prefixes, which makes it the 5,783rd largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses27,392in 8 prefixes
IPv6 prefixes3≈ 1.6 × 10³² addresses
Size rank#5,783of 82,200 active ASNs
Details
OrganizationCERNET New Technology Co., Ltd
AS nameCNT-northChina
Websitecernet.com
Country China (CN)
Network typeISP
RegistryAPNIC
Abuse contactyujj@cernet.com
Registered—
Last updated2023-09-05
IPv4 prefixes
8 prefixes · 27,392 addresses| Network | Addresses | First – last address |
|---|---|---|
| 42.245.192.0/18 | 16,384 | 42.245.192.0 – 42.245.255.255 |
| 42.201.32.0/19 | 8,192 | 42.201.32.0 – 42.201.63.255 |
| 103.81.200.0/22 | 1,024 | 103.81.200.0 – 103.81.203.255 |
| 42.201.60.0/23 | 512 | 42.201.60.0 – 42.201.61.255 |
| 42.201.62.0/23 | 512 | 42.201.62.0 – 42.201.63.255 |
| 42.201.33.0/24 | 256 | 42.201.33.0 – 42.201.33.255 |
| 42.245.221.0/24 | 256 | 42.245.221.0 – 42.245.221.255 |
| 43.252.48.0/24 | 256 | 43.252.48.0 – 43.252.48.255 |
42.245.192.0/18 42.201.32.0/19 103.81.200.0/22 42.201.60.0/23 42.201.62.0/23 42.201.33.0/24 42.245.221.0/24 43.252.48.0/24
IPv6 prefixes
3 prefixes- 240d:4000::/21
- 2400:a980::/29
- 2403:a200:9999::/48
240d:4000::/21 2400:a980::/29 2403:a200:9999::/48
Query AS133111 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=AS133111&key=YOUR_API_KEY"Any address in its prefixes resolves to AS133111, with or without a key:
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