121.192.3.0/24

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 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

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 121.192.3.0/24

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

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

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Pingable IPs

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

IP Address	ASN	Details
121.192.3.11	AS4538 China Education and Research Network Center	`8.61ms` 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
68.191.112.104	AS20115 Charter Communications LLC	`5.85ms` from Atlanta, US
34.217.78.216	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
20.122.66.232	AS8075 Microsoft Corporation	`0.39ms` from Boydton, US
174.16.205.200	AS209 CenturyLink Communications, LLC	`1.61ms` from Denver, US
78.146.217.184	AS13285 TalkTalk Communications Limited	`2.96ms` from Erith, GB
136.37.2.120	AS16591 Google Fiber Inc.	`0.60ms` from Kansas City, US
151.95.5.24	AS1267 WIND TRE S.P.A.	`9.87ms` from Milan, IT
67.114.165.24	AS7018 AT&T Enterprises, LLC	`1.63ms` from San Jose, US
73.93.20.104	AS7922 Comcast Cable Communications, LLC	`5.63ms` from Santa Clara, US
179.99.105.232	AS27699 TELEFÔNICA BRASIL S.A	`1.98ms` from São Paulo, BR
223.244.105.8	AS4134 CHINANET-BACKBONE	`8.36ms` from Wuhan, CN
24.49.48.104	AS14291 Antietam Broadband	`2.28ms` from Ashburn, US
173.194.17.136	AS15169 Google LLC	`0.29ms` from Atlanta, US
15.205.209.216	AS8987 Amazon Data Services Ireland Ltd	`0.35ms` from Boardman, US
105.155.238.152	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.02ms` from Casablanca, MA
66.56.236.152	AS11426 Charter Communications Inc	`12.56ms` from Charlotte, US
213.192.66.24	AS12831 Technical University of Gdansk, Academic Computer Center TASK	`0.47ms` from Gdansk, PL
218.20.11.216	AS4134 CHINANET-BACKBONE	`1.64ms` from Guangzhou, CN
20.2.44.184	AS8075 Microsoft Corporation	`0.57ms` from Hong Kong, HK
98.57.16.24	AS7922 Comcast Cable Communications, LLC	`7.35ms` from Houston, US
106.247.213.24	AS3786 LG DACOM Corporation	`1.84ms` from Incheon, KR
18.130.106.136	AS16509 Amazon.com, Inc.	`0.17ms` from London, GB
95.39.21.40	AS6739 Vodafone ONO AS	`9.59ms` from Madrid, ES
37.199.71.8	AS1257 Tele2 Sverige AB	`0.68ms` from Stockholm, SE
218.45.213.104	AS17676 SoftBank Corp.	`2.07ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f4 121.192.3.11

traceroute to 121.192.3.11 (121.192.3.11): 64 hops max, 52 byte packets

4 [AS749] 11.94.144.86 4.339 ms

5 *

6 [AS4538] 101.4.131.17 6.001 ms

7 [AS4538] 219.224.102.217 9.343 ms

8 *

9 *

10 *

11 [AS4538] 210.32.127.10 5.26 ms

12 [AS4538] 121.192.3.11 8.784 ms

Measurement taken from

IPinfo ProbeNet in Hangzhou, CN

On March 20th 2026

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