210.40.128.0/20

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 210.40.128.0/19
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        210.40.0.0 - 210.47.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
admin-c:        JW1-CN
tech-c:         XL1-CN
tech-c:         LZ1-CN
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        NS2.NET.EDU.CN
remarks:        DNS.EDU.CN
remarks:        CDNET52.CDNET.EDU.CN
remarks:        CDNET61.CDNET.EDU.CN
remarks:        DNS.WHNET.EDU.CN
remarks:        DNS.XANET.EDU.CN
remarks:        MARS.SHNET.EDU.CN
remarks:        MAVERICK.SYNET.EDU.CN
remarks:        NS1.NJNET.EDU.CN
remarks:        NS2.NJNET.EDU.CN
remarks:        ORANGE.GZNET.EDU.CN
remarks:        PINEAPPLE.GZNET.EDU.CN
remarks:        SAINT.SYNET.EDU.CN
remarks:        SUN200.WHNET.EDU.CN
remarks:        VENUS.SHNET.EDU.CN
remarks:        XANOC.XANET.EDU.CN
remarks:        service provider
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-10-20T00:56:43Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        abuse@cernet.edu.cn was validated on 2025-01-22
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-01-22T13:47:43Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2025-01-22
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-01-22T16:25:45Z
source:         APNIC

person:         Jianping Wu
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         jianping@cernet.edu.cn
nic-hdl:        JW1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

person:         Ling Zhang
address:        Network Center
address:        South China University of Technology
address:        Guangzhou, Guangdong 510641, China
address:        CN
country:        CN
phone:          +86-20-87110596
fax-no:         +86-20-87110019
e-mail:         ling@scut.edu.cn
nic-hdl:        LZ1-CN
notify:         dbmon@apnic.net
mnt-by:         MAINT-NULL
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

person:         Xing Li
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         xing@cernet.edu.cn
nic-hdl:        XL1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.40.128.0/20

Range ASN Company Num of IPs
210.40.128.0/19 AS4538 China Education and Research Network 8,192
210.32.0.0/12 AS4538 China Education and Research Network 1,048,576

BGP prefixes that are contained by 210.40.128.0/20

Range ASN Company Num of IPs
210.40.128.0/24 AS4538 China Education and Research Network 256

Nearby Ranges

BGP prefixes that overlap with 210.40.0.0/16

Range ASN Company Num of IPs
210.32.0.0/12 AS4538 China Education and Research Network 1,048,576
210.40.64.0/18 AS4538 China Education and Research Network 16,384
210.40.0.0/18 AS4538 China Education and Research Network 16,384
210.40.192.0/18 AS4538 China Education and Research Network 16,384
210.40.128.0/19 AS4538 China Education and Research Network 8,192
210.40.32.0/20 AS4538 China Education and Research Network 4,096
210.40.160.0/20 AS4538 China Education and Research Network 4,096
210.40.176.0/20 AS4538 China Education and Research Network 4,096
210.40.208.0/21 AS4538 China Education and Research Network 2,048
210.40.216.0/21 AS4538 China Education and Research Network 2,048
210.40.116.0/22 AS4538 China Education and Research Network 1,024
210.40.112.0/22 AS4538 China Education and Research Network 1,024
210.40.62.0/23 AS4538 China Education and Research Network 512
210.40.80.0/24 AS4538 China Education and Research Network 256
210.40.224.0/24 AS4538 China Education and Research Network 256
210.40.2.0/24 AS4538 China Education and Research Network 256
210.40.176.0/24 AS4538 China Education and Research Network 256
210.40.32.0/24 AS4538 China Education and Research Network 256
210.40.128.0/24 AS4538 China Education and Research Network 256
210.40.160.0/24 AS4538 China Education and Research Network 256
210.40.63.0/24 AS4538 China Education and Research Network 256
210.40.216.0/24 AS4538 China Education and Research Network 256
210.40.1.0/24 AS4538 China Education and Research Network 256
210.40.0.0/24 AS4538 China Education and Research Network 256
210.40.144.0/24 AS4538 China Education and Research Network 256
210.40.3.0/24 AS4538 China Education and Research Network 256
210.40.112.0/24 AS4538 China Education and Research Network 256
210.40.64.0/24 AS4538 China Education and Research Network 256
210.40.6.0/24 AS4538 China Education and Research Network 256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

151 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
210.40.128.35 AS4538 China Education and Research Network Center 28.79ms from Guangzhou, CN
210.40.143.120 AS4538 China Education and Research Network Center 25.55ms from Guiyang, CN
210.40.131.11 AS4538 China Education and Research Network Center 25.57ms from Guiyang, CN

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
95.85.52.196 AS14061 DigitalOcean, LLC 0.17ms from Amsterdam, NL
184.16.129.244 AS5650 Frontier Communications of America, Inc. 9.47ms from Chicago, US
95.130.17.36 AS13246 Key-Systems GmbH 16.91ms from Frankfurt am Main, DE
45.159.96.68 AS36236 NetActuate, Inc 0.22ms from Madrid, ES
119.47.41.196 AS7679 QTnet,Inc. 11.48ms from Osaka, JP
172.221.19.116 AS20115 Charter Communications LLC 10.56ms from San Jose, US
37.218.217.196 AS7018 AT&T Enterprises, LLC 2.07ms from Ashburn, US
171.213.181.148 AS4134 CHINANET-BACKBONE 4.22ms from Chengdu, CN
123.164.94.52 AS4134 CHINANET-BACKBONE 17.42ms from Dalian, CN
47.91.143.52 AS45102 Alibaba (US) Technology Co., Ltd. 0.64ms from Hong Kong, HK
86.138.58.196 AS2856 British Telecommunications PLC 2.13ms from London, GB
92.238.149.4 AS5089 Virgin Media Limited 10.52ms from London, GB
87.27.48.36 AS3269 Telecom Italia S.p.A. 8.40ms from Milan, IT
73.215.10.20 AS7922 Comcast Cable Communications, LLC 6.72ms from New York City, US
78.113.43.164 AS15557 Societe Francaise Du Radiotelephone - SFR SA 15.87ms from Paris, FR
112.31.194.116 AS9808 China Mobile Communications Group Co., Ltd. 12.18ms from Suzhou, CN
18.179.112.84 AS16509 Amazon.com, Inc. 0.15ms from Tokyo, JP
62.10.104.212 AS8070 Microsoft Corporation 0.69ms from Boydton, US
172.200.43.228 AS8075 Microsoft Corporation 0.34ms from Boydton, US
167.23.28.20 AS11870 ALTICOR INC 9.16ms from Chicago, US
162.156.105.100 AS852 TELUS Communications Inc. 1.64ms from Kelowna, CA
193.17.89.4 AS210757 Blackbird Solutions Limited 0.35ms from London, GB
212.237.225.164 AS25369 Hydra Communications Ltd 0.39ms from London, GB
63.139.60.116 AS7029 Windstream Communications LLC 2.48ms from Miami, US
60.100.89.244 AS17676 SoftBank Corp. 3.20ms from Tokyo, JP

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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