202.204.96.0/20

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 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 202.204.0.0/16

No nearby ranges found.

Hosted domains

There is 1 domain name hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
202.204.101.138	cugb.edu.cn	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
202.204.101.82	AS4538 China Education and Research Network Center	`3.38ms` from Beijing, CN
202.204.107.1	AS4538 China Education and Research Network Center	`5.35ms` from Beijing, CN
202.204.99.90	AS4538 China Education and Research Network Center	`3.81ms` from Beijing, CN
202.204.105.133	AS4538 China Education and Research Network Center	`3.55ms` 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
193.115.125.244	AS7545 TPG Telecom Limited	`11.79ms` from Adelaide, AU
68.56.237.196	AS7922 Comcast Cable Communications, LLC	`9.91ms` from Chicago, US
40.120.189.228	AS8075 Microsoft Corporation	`0.32ms` from Chicago, US
64.216.15.132	AS7018 AT&T Enterprises, LLC	`2.15ms` from Dallas, US
162.19.224.52	AS16276 OVH SAS	`0.12ms` from Frankfurt am Main, DE
84.230.8.100	AS719 Elisa Oyj	`7.95ms` from Helsinki, FI
23.39.233.52	AS7713 PT Telekomunikasi Indonesia	`10.04ms` from Jakarta, ID
88.26.10.68	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.01ms` from Madrid, ES
5.172.91.4	AS31115 INTRED S.P.A.	`2.30ms` from Milan, IT
60.135.239.68	AS17676 SoftBank Corp.	`3.70ms` from Osaka, JP
45.136.93.148	AS61205 Infomil S.A.S.	`0.60ms` from Paris, FR
46.148.235.148	AS49505 JSC Selectel	`1.06ms` from Saint Petersburg, RU
59.24.167.212	AS4766 Korea Telecom	`4.69ms` from Seoul, KR
45.129.10.148	AS3258 xTom Japan Corporation	`0.09ms` from Tokyo, JP
58.98.119.52	AS9595 NTT-ME Corporation	`2.57ms` from Tokyo, JP
169.55.185.228	AS36351 IBM Cloud	`0.76ms` from Toronto, CA
80.107.163.212	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.28ms` from Athens, GR
158.69.36.244	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
183.196.23.100	AS24547 Hebei Mobile Communication Company Limited	`7.46ms` from Beijing, CN
105.155.61.196	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`8.28ms` from Casablanca, MA
68.39.97.148	AS7922 Comcast Cable Communications, LLC	`12.28ms` from Chicago, US
76.190.83.68	AS10796 Charter Communications Inc	`2.76ms` from Cleveland, US
84.122.78.68	AS6739 VODAFONE ONO, S.A.	`12.67ms` from Madrid, ES
98.114.51.244	AS701 Verizon Business	`2.78ms` from Philadelphia, US
189.190.140.68	AS8151 UNINET	`6.39ms` from Santiago de Queretaro, MX

Traceroute

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

traceroute -a -n -q1 -f2 -m17 202.204.106.91

traceroute to 202.204.106.91 (202.204.106.91): 17 hops max, 52 byte packets

2 [AS23265] 206.126.16.197 2.129 ms

3 *

4 *

5 *

6 [AS6939] 184.105.213.118 89.554 ms

7 [AS6939] 184.105.64.129 133.778 ms

8 *

9 [AS4538] 101.4.114.181 172.917 ms

10 *

11 [AS4538] 101.4.117.81 175.534 ms

12 [AS4538] 101.4.112.98 176.711 ms

13 [AS4538] 101.4.113.229 176.637 ms

14 [AS4538] 202.112.42.82 181.233 ms

15 *

16 *

17 *

Measurement taken from

IPinfo ProbeNet in Walla Walla, US

On January 18th 2026

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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