202.205.80.0/20

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 7 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

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
202.205.80.176	AS4538 China Education and Research Network Center	`3.28ms` from Beijing, CN
202.205.93.232	AS4538 China Education and Research Network Center	`3.40ms` from Beijing, CN
202.205.87.25	AS4538 China Education and Research Network Center	`3.25ms` from Beijing, CN
202.205.85.174	AS4538 China Education and Research Network Center	`3.15ms` from Beijing, CN
202.205.92.212	AS4538 China Education and Research Network Center	`1.68ms` from Beijing, CN
202.205.86.60	AS4538 China Education and Research Network Center	`3.74ms` from Beijing, CN
202.205.91.208	AS4538 China Education and Research Network Center	`3.32ms` 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
192.94.67.4	AS3260 INTRACOM S.A. TELECOM SOLUTIONS	`0.76ms` from Athens, GR
156.204.31.36	AS8452 TE-AS	`6.24ms` from Cairo, EG
102.43.230.52	AS8452 TE-AS	`4.27ms` from Cairo, EG
70.118.213.116	AS11427 Charter Communications Inc	`15.58ms` from Dallas, US
71.237.72.212	AS7922 Comcast Cable Communications, LLC	`2.39ms` from Denver, US
76.127.5.244	AS7922 Comcast Cable Communications, LLC	`9.91ms` from Denver, US
157.255.150.20	AS134543 China Unicom Guangdong IP network	`4.15ms` from Guangzhou, CN
41.50.1.100	AS37168 Cell C (Pty) Ltd	`0.13ms` from Johannesburg, ZA
91.225.81.20	AS197263 PE TOTSKY OLEKSANDR VOLODYMYROVYCH	`1.06ms` from Kyiv, UA
113.230.16.228	AS4837 CHINA UNICOM China169 Backbone	`14.23ms` from Liaoyang, CN
104.16.93.164	AS13335 Cloudflare, Inc.	`0.10ms` from Lisbon, PT
176.27.91.228	AS5607 Sky UK Limited	`5.55ms` from London, GB
47.39.70.36	AS20115 Charter Communications LLC	`6.84ms` from Los Angeles, US
128.49.109.196	AS22 Navy Network Information Center (NNIC)	`1.75ms` from Los Angeles, US
148.75.77.132	AS6128 Cablevision Systems Corp.	`3.42ms` from New York City, US
79.243.108.52	AS3320 Deutsche Telekom AG	`6.49ms` from Nuernberg, DE
73.53.167.84	AS7922 Comcast Cable Communications, LLC	`7.55ms` from Orlando, US
79.36.248.164	AS3269 Telecom Italia S.p.A.	`2.46ms` from Rome, IT
52.248.97.20	AS8075 Microsoft Corporation	`0.22ms` from San Antonio, US
68.197.163.4	AS6128 Cablevision Systems Corp.	`8.71ms` from Secaucus, US
4.190.48.20	AS8075 Microsoft Corporation	`0.13ms` from Tokyo, JP
197.14.54.132	AS37693 OOREDOO TUNISIE SA	`1.03ms` from Tunis, TN
86.88.254.244	AS1136 KPN B.V.	`2.72ms` from Amsterdam, NL
24.88.166.164	AS11426 Charter Communications Inc	`9.78ms` from Atlanta, US
20.14.239.4	AS8075 Microsoft Corporation	`0.29ms` from Boydton, US

Traceroute

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

traceroute -a -n -q1 -f3 -m16 202.205.81.57

traceroute to 202.205.81.57 (202.205.81.57): 16 hops max, 52 byte packets

3 [AS6939] 184.104.177.113 0.818 ms

4 *

5 *

6 *

7 *

8 [] 123.255.91.118 270.132 ms

9 *

10 *

11 *

12 [AS4538] 101.4.116.126 342.104 ms

13 [AS4538] 202.112.5.122 338.67 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Bucharest, RO

On November 22nd 2025

What are IP address ranges?

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