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ASN Lookup Tool
AS138421 CU-CN-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS138421
Organisation
China Unicom
Name
CU-CN-AS
Total IPv4 Addresses
161,994
Total IPv4 Prefixes
231
Total IPv6 Prefixes
37
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,258 out of 77,684
Registry
Apnic
Registered Country
CN flag CN
Registered Country Name
China
Registered Date
Registration Last Change
2023-10-21
Receiving From

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

ASN
Organisation
AS4134
CN flagNo.31,Jin-rong Street Beijing 100032
AS4837
CN flagCHINA UNICOM China169 Backbone
AS4766
KR flagKorea Telecom
AS701
US flagVerizon Business
AS3320
DE flagDeutsche Telekom AG
Showing 5 of 68
Transit To

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

 

ASN
Organisation
AS55990
CN flagHuawei Cloud Service data center
AS136907
HK flagHUAWEI INTERNATIONAL PTE. LTD.
AS4811
CN flagChina Telecom (Group) Shanghai Telecom Company S..
AS137718
CN flagBeijing Volcano Engine Technology Co., Ltd. 1309..
AS65100
WORLD flagPrivate Use AS
Showing 5 of 6
IPv4 Active Prefixes

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

Prefix1.1.8.0/24
Range From1.1.8.0
Range To1.1.8.255
Prefix43.240.125.0/24
Range From43.240.125.0
Range To43.240.125.255
Prefix43.240.127.0/24
Range From43.240.127.0
Range To43.240.127.255
Prefix43.240.128.0/23
Range From43.240.128.0
Range To43.240.129.255
Prefix43.240.130.0/23
Range From43.240.130.0
Range To43.240.131.255
Showing 5 of 231
IPv6 Active Prefixes
Prefix2402:f140:ff11::/48
Range From2402:f140:ff11::
Range To2402:f140:ff11:ffff:ffff:ffff:ffff:ffff
Prefix2403:1ec0:1610::/48
Range From2403:1ec0:1610::
Range To2403:1ec0:1610:ffff:ffff:ffff:ffff:ffff
Prefix2404:c940::/48
Range From2404:c940::
Range To2404:c940:0:ffff:ffff:ffff:ffff:ffff
Prefix2406:d440:ffff::/48
Range From2406:d440:ffff::
Range To2406:d440:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2408:8000:9fff::/48
Range From2408:8000:9fff::
Range To2408:8000:9fff:ffff:ffff:ffff:ffff:ffff
Showing 5 of 37
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.