121.192.40.0/22

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	121.192.0.0/16
Registry	APNIC
ID	SHR-CERNET

WHOIS Details

inetnum:        121.192.0.0 - 121.192.255.255
netname:        SHR-CERNET
descr:          China Education and Research Network
descr:          Shanghai Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:25Z
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

route:          121.192.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.192.40.0/22

Range	ASN	Company	Num of IPs
121.192.0.0/16	AS4538	China Education and Research Network	65,536

Nearby Ranges

BGP prefixes that overlap with 121.192.0.0/16

Range	ASN	Company	Num of IPs
121.192.0.0/16	AS4538	China Education and Research Network	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
121.192.40.100	AS4538 China Education and Research Network Center	`12.03ms` from Hangzhou, 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
100.31.12.22	AS14618 Amazon.com, Inc.	`0.60ms` from Ashburn, US
50.211.185.54	AS7922 Comcast Cable Communications, LLC	`7.33ms` from Ashburn, US
84.192.28.86	AS6848 Telenet BV	`5.69ms` from Brussels, BE
118.117.27.198	AS4134 CHINANET-BACKBONE	`8.56ms` from Chengdu, CN
189.28.185.118	AS28292 ENGEPLUS INFORMATICA LTDA	`6.51ms` from Curitiba, BR
87.191.160.182	AS3320 Deutsche Telekom AG	`9.87ms` from Frankfurt am Main, DE
91.11.112.86	AS3320 Deutsche Telekom AG	`5.71ms` from Frankfurt am Main, DE
88.186.6.70	AS12322 Free SAS	`12.94ms` from Paris, FR
96.85.128.246	AS7922 Comcast Cable Communications, LLC	`5.69ms` from Portland, US
221.163.192.54	AS4766 Korea Telecom	`1.78ms` from Seoul, KR
199.36.4.6	AS11528 Photronics Inc.	`1.31ms` from Taichung, TW
144.31.178.22	AS206715 UXHOST LTD	`0.29ms` from Tallinn, EE
59.106.170.230	AS9370 SAKURA Internet Inc.	`0.75ms` from Tokyo, JP
37.150.34.214	AS9198 JSC Kazakhtelecom	`2.29ms` from Almaty, KZ
54.160.81.150	AS14618 Amazon.com, Inc.	`0.64ms` from Ashburn, US
71.62.159.38	AS7922 Comcast Cable Communications, LLC	`6.86ms` from Ashburn, US
75.208.209.118	AS6167 Verizon Business	`14.84ms` from Atlanta, US
15.240.36.214	AS16509 Amazon.com, Inc.	`0.16ms` from Cape Town, ZA
67.140.186.182	AS22944 Kentucky Community and Technical College System	`10.56ms` from Chicago, US
184.18.112.246	AS5650 Frontier Communications of America, Inc.	`12.84ms` from Chicago, US
104.50.152.134	AS7018 AT&T Enterprises, LLC	`6.83ms` from Columbus, US
34.30.19.22	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
198.36.149.102	AS10753 Level 3 Parent, LLC	`0.79ms` from Denver, US
91.48.54.102	AS3320 Deutsche Telekom AG	`2.40ms` from Duesseldorf, DE
93.130.138.214	AS6805 Telefonica Germany GmbH & Co.OHG	`2.44ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -m20 121.192.41.184

traceroute to 121.192.41.184 (121.192.41.184): 20 hops max, 52 byte packets

1 [AS31898] 140.91.230.13 0.085 ms

2 [AS9318] 39.120.201.130 0.559 ms

3 [AS9318] 39.120.201.129 2.448 ms

4 *

5 *

6 [] 123.255.91.118 43.919 ms

7 [AS4538] 101.4.114.181 76.034 ms

8 *

9 *

10 [AS4538] 101.4.115.145 79.207 ms

11 *

12 [AS4538] 101.4.117.46 112.504 ms

13 *

14 *

15 *

16 *

17 [AS4538] 210.33.35.6 120.455 ms

18 *

19 *

20 *

Measurement taken from

IPinfo ProbeNet in Chuncheon, KR

On December 28th 2025

What are IP address ranges?

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