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ASN Lookup Tool
AS4538 China Education and Research Network Center Tsin..

An 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.

ASN Lookup for:

AS4538

Powered By:
ASN Extended Info API
BGP Active Prefixes API
ASN Details JSON View

ASN Details

ASN
AS4538
Organisation
China Education and Research Network Center Tsin..
AS Name
ERX-CERNET-BKB
IPv4 Addresses Announced
16,952,571
IPv4 Prefixes Announced
7,926
IPv6 Prefixes Announced
5
IPv4 Bogon Prefixes
0
IPv6 Bogon Prefixes
0
IPv4 Space Rank
#25 out of 75,468
Registry
Apnic
Registered Country
CN flag CN
Registration Date
Registration Change
2020-09-03

Receiving From

ASN
Organisation
ASN
AS4635
Organisation
HK flag The Hong Kong Internet Exchange Limited
ASN
AS4789
Organisation
CN flag NAP1 at CERNET Tsinghua University, Beijing
ASN
AS4134
Organisation
CN flag No.31,Jin-rong Street Beijing 100032
ASN
AS4837
Organisation
CN flag CHINA UNICOM China169 Backbone
ASN
AS174
Organisation
US flag Cogent Communications
ASN
AS9808
Organisation
CN flag China Mobile
ASN
AS4538
Organisation
CN flag China Education and Research Network Center Tsin..
ASN
AS2914
Organisation
US flag NTT America, Inc.
ASN
AS3491
Organisation
US flag PCCW Global, Inc.
ASN
AS7497
Organisation
CN flag Computer Network Information Center Chinese Acad..
Showing 10 of 28 Results View More >

Transit To

ASN
Organisation
ASN
AS146745
Organisation
WORLD flag Private Use AS
ASN
AS146744
Organisation
WORLD flag Private Use AS
ASN
AS146743
Organisation
WORLD flag Private Use AS
ASN
AS146742
Organisation
WORLD flag Private Use AS
ASN
AS146741
Organisation
WORLD flag Private Use AS
ASN
AS146740
Organisation
WORLD flag Private Use AS
ASN
AS146739
Organisation
WORLD flag Private Use AS
ASN
AS146738
Organisation
WORLD flag Private Use AS
ASN
AS146737
Organisation
WORLD flag Private Use AS
ASN
AS146736
Organisation
WORLD flag Private Use AS
Showing 10 of 158 Results View More >

Active Prefixes IPv4

Prefix
Range From
Range To
Prefix
1.184.0.0/17
Range From
1.184.0.0
Range To
1.184.127.255
Prefix
1.184.128.0/18
Range From
1.184.128.0
Range To
1.184.191.255
Prefix
1.184.192.0/18
Range From
1.184.192.0
Range To
1.184.255.255
Prefix
1.185.0.0/18
Range From
1.185.0.0
Range To
1.185.63.255
Prefix
1.185.128.0/18
Range From
1.185.128.0
Range To
1.185.191.255
Prefix
1.185.192.0/18
Range From
1.185.192.0
Range To
1.185.255.255
Prefix
1.185.64.0/19
Range From
1.185.64.0
Range To
1.185.95.255
Prefix
1.185.96.0/19
Range From
1.185.96.0
Range To
1.185.127.255
Prefix
1.51.0.0/20
Range From
1.51.0.0
Range To
1.51.15.255
Prefix
1.51.112.0/24
Range From
1.51.112.0
Range To
1.51.112.255
Showing 10 of 7,926 Results View More >

Active Prefixes IPv6

Prefix
Range From
Range To
Prefix
2001:250:220::/48
Range From
2001:250:220::
Range To
2001:250:220:ffff:ffff:ffff:ffff:ffff
Prefix
2001:da8:257::/48
Range From
2001:da8:257::
Range To
2001:da8:257:ffff:ffff:ffff:ffff:ffff
Prefix
2001:da8:281::/48
Range From
2001:da8:281::
Range To
2001:da8:281:ffff:ffff:ffff:ffff:ffff
Prefix
2400:a980:ee::/48
Range From
2400:a980:ee::
Range To
2400:a980:ee:ffff:ffff:ffff:ffff:ffff
Prefix
240c:c0a1::/32
Range From
240c:c0a1::
Range To
240c:c0a1:ffff:ffff:ffff:ffff:ffff:ffff