202.200.0.0/21

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.200.0.0/13
Registry	APNIC
ID	XAR-CERNET

WHOIS Details

inetnum:        202.200.0.0 - 202.201.255.255
netname:        XAR-CERNET
descr:          China Education and Research Network
descr:          Xi'an Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ASSIGNED NON-PORTABLE
remarks:        origin AS4538
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2021-03-24T13:04:50Z
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 202.200.0.0/21

Range	ASN	Company	Num of IPs
202.200.0.0/13	AS4538	China Education and Research Network	524,288
202.192.0.0/12	AS4538	China Education and Research Network	1,048,576

Nearby Ranges

BGP prefixes that overlap with 202.200.0.0/16

Range	ASN	Company	Num of IPs
202.192.0.0/12	AS4538	China Education and Research Network	1,048,576
202.200.0.0/13	AS4538	China Education and Research Network	524,288
202.200.80.0/20	AS4538	China Education and Research Network	4,096
202.200.32.0/20	AS4538	China Education and Research Network	4,096
202.200.144.0/20	AS4538	China Education and Research Network	4,096
202.200.96.0/20	AS4538	China Education and Research Network	4,096
202.200.112.0/20	AS4538	China Education and Research Network	4,096
202.200.224.0/20	AS4538	China Education and Research Network	4,096
202.200.64.0/20	AS4538	China Education and Research Network	4,096
202.200.176.0/20	AS4538	China Education and Research Network	4,096
202.200.48.0/20	AS4538	China Education and Research Network	4,096
202.200.208.0/20	AS4538	China Education and Research Network	4,096
202.200.240.0/20	AS4538	China Education and Research Network	4,096
202.200.168.0/21	AS4538	China Education and Research Network	2,048
202.200.16.0/21	AS4538	China Education and Research Network	2,048
202.200.200.0/21	AS4538	China Education and Research Network	2,048
202.200.8.0/22	AS4538	China Education and Research Network	1,024
202.200.12.0/22	AS4538	China Education and Research Network	1,024
202.200.140.0/23	AS4538	China Education and Research Network	512
202.200.64.0/24	AS4538	China Education and Research Network	256
202.200.31.0/24	AS4538	China Education and Research Network	256
202.200.41.0/24	AS4538	China Education and Research Network	256
202.200.29.0/24	AS4538	China Education and Research Network	256
202.200.28.0/24	AS4538	China Education and Research Network	256
202.200.200.0/24	AS4538	China Education and Research Network	256
202.200.81.0/24	AS4538	China Education and Research Network	256
202.200.32.0/24	AS4538	China Education and Research Network	256
202.200.37.0/24	AS4538	China Education and Research Network	256
202.200.96.0/24	AS4538	China Education and Research Network	256
202.200.42.0/24	AS4538	China Education and Research Network	256
202.200.35.0/24	AS4538	China Education and Research Network	256
202.200.36.0/24	AS4538	China Education and Research Network	256
202.200.94.0/24	AS4538	China Education and Research Network	256
202.200.80.0/24	AS4538	China Education and Research Network	256
202.200.43.0/24	AS4538	China Education and Research Network	256
202.200.48.0/24	AS4538	China Education and Research Network	256
202.200.255.0/24	AS4538	China Education and Research Network	256
202.200.112.0/24	AS4538	China Education and Research Network	256
202.200.38.0/24	AS4538	China Education and Research Network	256
202.200.34.0/24	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

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Pingable IPs

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

IP Address	ASN	Details
202.200.2.230	AS4538 China Education and Research Network Center	24.39ms from Zhongwei, CN
202.200.0.26	AS4538 China Education and Research Network Center	23.51ms from Zhongwei, 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
169.61.108.5	AS36351 IBM Cloud	0.41ms from Ashburn, US
185.77.248.133	AS203680 Araz Tech LLC	11.20ms from Baku, AZ
188.102.209.69	AS3209 Vodafone GmbH	8.08ms from Berlin, DE
128.85.197.213	AS8075 Microsoft Corporation	0.93ms from Boydton, US
99.8.102.69	AS7018 AT&T Enterprises, LLC	2.94ms from Dallas, US
5.2.69.37	AS60404 The Infrastructure Group B.V.	0.26ms from Dronten, NL
191.101.107.69	AS9009 M247 Europe SRL	0.11ms from Frankfurt am Main, DE
50.91.196.101	AS33363 Charter Communications, Inc	8.31ms from Los Angeles, US
15.223.242.133	AS16509 Amazon.com, Inc.	0.73ms from Montreal, CA
34.141.152.21	AS396982 Google LLC	0.14ms from Oudeschip, NL
186.223.227.37	AS28573 Claro NXT Telecomunicacoes Ltda	8.98ms from Porto Alegre, BR
201.111.38.213	AS8151 UNINET	12.68ms from Santiago de Queretaro, MX
74.178.177.149	AS8075 Microsoft Corporation	1.61ms from Amsterdam, NL
188.217.144.69	AS30722 Vodafone Italia S.p.A.	15.68ms from Arezzo, IT
187.112.21.53	AS18881 TELEFÔNICA BRASIL S.A	19.71ms from Fortaleza, BR
217.85.150.21	AS3320 Deutsche Telekom AG	7.69ms from Frankfurt am Main, DE
107.193.133.245	AS7018 AT&T Enterprises, LLC	7.29ms from Houston, US
109.155.79.5	AS2856 British Telecommunications PLC	2.15ms from London, GB
90.241.239.53	AS5378 Vodafone Limited	2.90ms from Manchester, GB
62.100.93.53	AS15472 TERRALINK S.R.L.	4.20ms from Milan, IT
75.114.49.5	AS33363 Charter Communications, Inc	12.39ms from Murfreesboro, US
196.18.237.197	AS262287 Latitude.sh LTDA	0.15ms from Sao Paulo, BR
1.250.92.85	AS9318 SK Broadband Co Ltd	4.65ms from Seoul, KR
101.68.76.133	AS4837 CHINA UNICOM China169 Backbone	3.45ms from Hangzhou, CN
82.44.115.117	AS5089 Virgin Media Limited	4.38ms from London, GB

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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