202.205.112.0/20

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 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 202.205.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

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

Read more

Pingable IPs

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

IP Address	ASN	Details
202.205.112.88	AS4538 China Education and Research Network Center	`2.05ms` from Beijing, CN
202.205.113.28	AS4538 China Education and Research Network Center	`2.09ms` 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
66.162.227.4	AS3549 Level 3 Parent, LLC	`7.00ms` from Chicago, US
34.134.15.196	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
18.184.127.180	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
45.84.240.20	AS834 IPXO LLC	`0.37ms` from Frankfurt am Main, DE
86.248.147.68	AS3215 Orange S.A.	`7.74ms` from Marseille, FR
34.32.151.52	AS396982 Google LLC	`0.13ms` from Oudeschip, NL
97.207.255.20	AS6167 Verizon Business	`18.42ms` from Philadelphia, US
213.25.100.196	AS5617 Orange Polska Spolka Akcyjna	`1.81ms` from Poznan, PL
38.38.143.20	AS54600 PEG TECH INC	`0.24ms` from San Jose, US
47.130.48.84	AS16509 Amazon.com, Inc.	`0.13ms` from Singapore, SG
57.182.48.52	AS16509 Amazon.com, Inc.	`0.20ms` from Tokyo, JP
197.39.92.196	AS8452 TE-AS	`7.55ms` from Cairo, EG
165.90.204.100	AS327950 Izwi Technology Group (Pty) Ltd	`1.38ms` from Cape Town, ZA
90.236.59.164	AS3301 Telia Company AB	`14.02ms` from Copenhagen, DK
35.238.199.132	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
177.6.159.52	AS8167 V tal	`0.94ms` from Curitiba, BR
121.196.168.4	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.59ms` from Hangzhou, CN
183.141.195.180	AS4134 CHINANET-BACKBONE	`7.24ms` from Hangzhou, CN
180.104.181.244	AS4134 CHINANET-BACKBONE	`10.85ms` from Huai'an, CN
119.112.126.212	AS4837 CHINA UNICOM China169 Backbone	`9.22ms` from Liaoyang, CN
89.105.108.52	AS39545 Fluidone Ltd.	`0.65ms` from London, GB
81.108.73.132	AS5089 Virgin Media Limited	`13.96ms` from London, GB
73.41.68.52	AS7922 Comcast Cable Communications, LLC	`10.79ms` from Los Angeles, US
76.100.35.228	AS7922 Comcast Cable Communications, LLC	`6.70ms` from Manassas, US
198.28.185.68	AS11272 C Spire Fiber	`9.67ms` from New Orleans, US

Traceroute

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

traceroute -a -n -q1 -f5 -m12 202.205.122.112

traceroute to 202.205.122.112 (202.205.122.112): 12 hops max, 52 byte packets

5 [AS9318] 211.176.57.125 3.064 ms

6 *

7 *

8 [] 123.255.91.118 37.944 ms

9 [AS4538] 101.4.114.181 187.098 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 14th 2025

What are IP address ranges?

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