202.197.0.0/20

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 202.196.0.0/15
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        202.192.0.0 - 202.199.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          SY Region
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
remarks:        hostmaster@apnic.net 960130
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2021-10-30T08:29:34Z
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
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

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 202.197.0.0/20

Range ASN Company Num of IPs
202.196.0.0/15 AS4538 China Education and Research Network 131,072
202.192.0.0/13 AS4538 China Education and Research Network 524,288
202.192.0.0/12 AS4538 China Education and Research Network 1,048,576

BGP prefixes that are contained by 202.197.0.0/20

Range ASN Company Num of IPs
202.197.0.0/24 AS4538 China Education and Research Network 256
202.197.2.0/24 AS4538 China Education and Research Network 256

Nearby Ranges

BGP prefixes that overlap with 202.197.0.0/16

Range ASN Company Num of IPs
202.192.0.0/12 AS4538 China Education and Research Network 1,048,576
202.192.0.0/13 AS4538 China Education and Research Network 524,288
202.196.0.0/15 AS4538 China Education and Research Network 131,072
202.197.176.0/20 AS4538 China Education and Research Network 4,096
202.197.64.0/20 AS4538 China Education and Research Network 4,096
202.197.48.0/20 AS4538 China Education and Research Network 4,096
202.197.224.0/20 AS4538 China Education and Research Network 4,096
202.197.192.0/20 AS4538 China Education and Research Network 4,096
202.197.208.0/20 AS4538 China Education and Research Network 4,096
202.197.144.0/20 AS4538 China Education and Research Network 4,096
202.197.32.0/20 AS4538 China Education and Research Network 4,096
202.197.112.0/20 AS4538 China Education and Research Network 4,096
202.197.80.0/20 AS4538 China Education and Research Network 4,096
202.197.96.0/20 AS4538 China Education and Research Network 4,096
202.197.16.0/21 AS4538 China Education and Research Network 2,048
202.197.240.0/21 AS4538 China Education and Research Network 2,048
202.197.24.0/21 AS4538 China Education and Research Network 2,048
202.197.159.0/24 AS4538 China Education and Research Network 256
202.197.2.0/24 AS4538 China Education and Research Network 256
202.197.0.0/24 AS4538 China Education and Research Network 256
202.197.96.0/24 AS4538 China Education and Research Network 256
202.197.124.0/24 AS4538 China Education and Research Network 256
202.197.111.0/24 AS4538 China Education and Research Network 256
202.197.240.0/24 AS4538 China Education and Research Network 256
202.197.193.0/24 AS4538 China Education and Research Network 256
202.197.112.0/24 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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Useful for Cybersecurity

Pingable IPs

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

IP Address ASN Details
202.197.9.126 AS4538 China Education and Research Network Center 12.37ms from Guangzhou, 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
79.131.245.244 AS6799 Ote SA (Hellenic Telecommunications Organisation) 16.40ms from Athens, GR
115.203.135.36 AS4134 CHINANET-BACKBONE 10.20ms from Hangzhou, CN
20.209.66.4 AS8075 Microsoft Corporation 1.61ms from Singapore, SG
43.128.231.212 AS132203 Tencent Building, Kejizhongyi Avenue 1.15ms from Tokyo, JP
107.167.123.132 AS21837 Opera Software Americas LLC 0.27ms from Ashburn, US
44.228.189.148 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
90.33.141.20 AS3215 Orange S.A. 18.78ms from Frankfurt am Main, DE
93.188.24.244 AS44974 RegioNet Schweinfurt GmbH 2.38ms from Frankfurt am Main, DE
186.204.26.68 AS28573 Claro NXT Telecomunicacoes Ltda 6.02ms from Sao Paulo, BR
223.219.26.36 AS4713 NTT Communications Corporation 3.55ms from Tokyo, JP
107.218.36.68 AS7018 AT&T Enterprises, LLC 8.91ms from Atlanta, US
54.228.103.4 AS16509 Amazon.com, Inc. 0.15ms from Dublin, IE
175.152.249.228 AS4837 CHINA UNICOM China169 Backbone 3.57ms from Chengdu, CN
95.201.78.20 AS3301 Telia Company AB 12.33ms from Copenhagen, DK
5.128.13.228 AS31200 Novotelecom Ltd 1.32ms from Novosibirsk, RU
124.35.233.52 AS17506 ARTERIA Networks Corporation 1.31ms from Tokyo, JP
18.178.167.196 AS16509 Amazon.com, Inc. 0.17ms from Tokyo, JP
157.255.14.68 AS136958 China Unicom Guangdong IP network 1.64ms from Guangzhou, CN
92.16.217.244 AS13285 TalkTalk Communications Limited 4.70ms from London, GB
132.226.57.4 AS31898 Oracle Corporation 0.27ms from Ashburn, US
138.255.120.36 AS263441 MA SOLUCOES EM TECNOLOGIA LTDA - ME 14.94ms from Sao Paulo, BR
59.12.62.196 AS4766 Korea Telecom 2.26ms from Seoul, KR
3.106.116.84 AS16509 Amazon.com, Inc. 0.10ms from Sydney, AU
221.122.70.196 AS23724 IDC, China Telecommunications Corporation 3.42ms from Tianjin, CN
188.203.69.164 AS1136 KPN B.V. 4.97ms from Amsterdam, NL

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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