202.203.128.0/23

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Registry	APNIC
ID	CDR-CERNET

WHOIS Details

inetnum:        202.202.0.0 - 202.203.255.255
netname:        CDR-CERNET
descr:          China Education and Research Network
descr:          Chengdu 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:  2021-03-24T13:05:10Z
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 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-11-18T00:26:28Z
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 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
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

Nearby Ranges

BGP prefixes that overlap with 202.203.0.0/16

No nearby ranges found.

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
88.72.2.119	AS3209 Vodafone GmbH	`7.21ms` from Berlin, DE
101.46.198.71	AS136907 HUAWEI CLOUDS	`0.35ms` from Cairo, EG
76.1.1.23	AS19901 Brightspeed	`13.31ms` from Chicago, US
185.157.234.215	AS46261 QuickPacket, LLC	`5.77ms` from London, GB
208.54.17.7	AS21928 T-Mobile USA, Inc.	`5.53ms` from Miami, US
173.34.29.215	AS812 Rogers Communications Canada Inc.	`2.36ms` from Ottawa, CA
73.37.10.71	AS7922 Comcast Cable Communications, LLC	`5.62ms` from Portland, US
119.180.35.87	AS4837 CHINA UNICOM China169 Backbone	`4.33ms` from Qingdao, CN
52.70.5.199	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
186.207.62.231	AS28573 Claro NXT Telecomunicacoes Ltda	`6.29ms` from Sao Paulo, BR
112.156.87.151	AS17858 LG POWERCOMM	`1.72ms` from Seoul, KR
117.33.184.167	AS134768 CHINANET SHAANXI province Cloud Base network	`2.25ms` from Xi'an, CN
46.232.187.71	AS196922 Hofmeir Media GmbH	`4.62ms` from Zuerich, CH
86.88.142.135	AS1136 KPN B.V.	`3.14ms` from Amsterdam, NL
81.165.180.215	AS6848 Telenet BV	`7.73ms` from Brussels, BE
186.148.205.247	AS52350 Cooperativa de Electricidad, Obras y Servicios Públicos Suipacha JJ Almeira Ltda.	`7.00ms` from Buenos Aires, AR
139.137.128.7	AS22093 Cleveland Clinic Foundation	`7.20ms` from Chicago, US
188.176.169.23	AS3292 TDC Holding A/S	`7.99ms` from Copenhagen, DK
41.214.53.103	AS8346 SONATEL-AS Autonomous System	`1.88ms` from Dakar, SN
24.8.221.183	AS7922 Comcast Cable Communications, LLC	`1.84ms` from Denver, US
34.125.183.39	AS396982 Google LLC	`0.13ms` from Las Vegas, US
165.225.226.135	AS53813 ZSCALER, INC.	`0.30ms` from Melbourne, AU
109.219.216.7	AS3215 Orange S.A.	`10.28ms` from Paris, FR
118.36.52.135	AS4766 Korea Telecom	`1.86ms` from Seoul, KR
221.239.64.7	AS17638 ASN for TIANJIN Provincial Net of CT	`5.44ms` from Tianjin, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 -m10 202.203.128.89

traceroute to 202.203.128.89 (202.203.128.89): 10 hops max, 52 byte packets

3 [AS16509] 99.82.11.132 2.434 ms

4 [AS16509] 99.82.11.133 3.251 ms

5 [AS58453] 223.120.2.118 64.441 ms

6 [] 123.255.91.118 54.165 ms

7 [AS4538] 101.4.114.181 88.319 ms

8 *

9 *

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Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On November 14th 2025

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