202.204.112.0/20

AS4538  ·  China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        202.204.0.0 - 202.207.255.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED 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:  2020-09-03T09:16:26Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Center,
address:        FIT-3-220, 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:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, 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 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
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 202.204.0.0/16

No nearby ranges found.

Hosted domains

There are 6 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
202.204.123.165 bjfu.org.cn 1
202.204.121.72 sbxh.org 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity

Pingable IPs

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

IP Address ASN Details
202.204.121.125 AS4538 China Education and Research Network Center 2.98ms from Beijing, CN
202.204.112.10 AS4538 China Education and Research Network Center 2.23ms from Beijing, CN
202.204.123.230 AS4538 China Education and Research Network Center 3.01ms from Beijing, CN
202.204.127.103 AS4538 China Education and Research Network Center 3.06ms from Beijing, CN
202.204.118.254 AS4538 China Education and Research Network Center 2.99ms from Beijing, CN
202.204.124.209 AS4538 China Education and Research Network Center 2.27ms from Beijing, 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
18.204.25.36 AS14618 Amazon.com, Inc. 0.47ms from Ashburn, US
84.170.228.36 AS3320 Deutsche Telekom AG 4.47ms from Berlin, DE
35.93.149.116 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
71.117.139.36 AS701 Verizon Business 2.98ms from Boston, US
46.101.174.52 AS14061 DigitalOcean, LLC 0.47ms from Frankfurt am Main, DE
3.76.247.52 AS16509 Amazon.com, Inc. 0.15ms from Frankfurt am Main, DE
35.228.237.228 AS396982 Google LLC 0.14ms from Hamina, FI
122.158.119.164 AS4837 CHINA UNICOM China169 Backbone 5.52ms from Harbin, CN
192.160.56.100 AS26513 TGS-NOPEC Geophysical Company 0.43ms from Houston, US
95.147.24.212 AS2856 British Telecommunications PLC 9.52ms from London, GB
72.255.56.100 AS9541 Cyber Internet Services (Pvt) Ltd. 0.76ms from Marseille, FR
88.164.49.212 AS12322 Free SAS 13.45ms from Paris, FR
119.59.1.84 AS139648 PacketStream Korea 0.72ms from Seoul, KR
220.73.171.244 AS4766 Korea Telecom 0.94ms from Seoul, KR
20.200.94.84 AS8075 Microsoft Corporation 0.16ms from Toronto, CA
100.25.100.68 AS14618 Amazon.com, Inc. 0.51ms from Ashburn, US
44.211.0.68 AS14618 Amazon.com, Inc. 0.48ms from Ashburn, US
100.15.43.20 AS701 Verizon Business 2.21ms from Ashburn, US
152.16.1.4 AS13371 Duke University 11.46ms from Atlanta, US
207.92.127.132 AS7029 Windstream Communications LLC 5.74ms from Atlanta, US
190.251.98.4 AS13489 UNE EPM TELECOMUNICACIONES S.A. 12.52ms from Bogota, CO
111.8.118.196 AS56047 China Mobile communications corporation 5.17ms from Changsha, CN
173.27.30.148 AS30036 Mediacom Communications Corp 12.19ms from Chicago, US
24.1.222.116 AS7922 Comcast Cable Communications, LLC 5.07ms from Chicago, US
134.220.237.132 AS786 Jisc Services Limited 6.27ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -f4 -m11 202.204.116.3
traceroute to 202.204.116.3 (202.204.116.3): 11 hops max, 52 byte packets
4 [] 123.255.91.118 60.219 ms
5 [AS4538] 101.4.114.181 207.652 ms
6 *
7 *
8 [AS4538] 101.4.116.126 194.822 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
On

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