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ASN Lookup Tool
AS133111 CNT-northChina

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS133111
Organisation
CERNET New Technology Co., Ltd
Name
CNT-northChina
Total IPv4 Addresses
18,156
Total IPv4 Prefixes
18
Total IPv6 Prefixes
224
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#6,694 out of 77,675
Registry
Apnic
Registered Country
CN flag CN
Registered Country Name
China
Registered Date
Registration Last Change
2023-09-05
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS23910
CN flagChina Next Generation Internet CERNET2 CNGI-CERN..
AS9808
CN flagChina Mobile
AS4538
CN flagChina Education and Research Network Center Tsin..
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS131137
CN flagInspur Software Group Co., Ltd. No.1036 Langchao..
AS55641
CN flagBeijing CNISP Technology Co., Ltd.
AS59022
CN flagKunming Broadcast&TV Network CO.,LTD News Center..
AS134169
CN flagCERNEWTECH (Beijing) co.,LTD Beijing 100084, Chi..
AS4538
CN flagChina Education and Research Network Center Tsin..
Showing 5 of 15
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix42.201.32.0/24
Range From42.201.32.0
Range To42.201.32.255
Prefix42.201.33.0/24
Range From42.201.33.0
Range To42.201.33.255
Prefix42.201.34.0/23
Range From42.201.34.0
Range To42.201.35.255
Prefix42.201.36.0/22
Range From42.201.36.0
Range To42.201.39.255
Prefix42.201.40.0/21
Range From42.201.40.0
Range To42.201.47.255
Showing 5 of 18
IPv6 Active Prefixes
Prefix2400:a980::/41
Range From2400:a980::
Range To2400:a980:7f:ffff:ffff:ffff:ffff:ffff
Prefix2400:a980:80::/43
Range From2400:a980:80::
Range To2400:a980:9f:ffff:ffff:ffff:ffff:ffff
Prefix2400:a980:a0::/44
Range From2400:a980:a0::
Range To2400:a980:af:ffff:ffff:ffff:ffff:ffff
Prefix2400:a980:b0::/45
Range From2400:a980:b0::
Range To2400:a980:b7:ffff:ffff:ffff:ffff:ffff
Prefix2400:a980:b8::/46
Range From2400:a980:b8::
Range To2400:a980:bb:ffff:ffff:ffff:ffff:ffff
Showing 5 of 224
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.