121.192.4.0/22

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 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 121.192.4.0/22

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

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

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

IP Address	ASN	Details
121.192.4.14	AS4538 China Education and Research Network Center	`6.28ms` 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
75.6.49.134	AS7018 AT&T Enterprises, LLC	`3.91ms` from Atlanta, US
94.110.77.118	AS47377 Orange Belgium SA	`9.11ms` from Brussels, BE
75.191.150.118	AS11426 Charter Communications Inc	`10.57ms` from Charlotte, US
91.209.52.102	AS61157 PlusServer GmbH	`5.14ms` from Copenhagen, DK
24.243.190.22	AS11427 Charter Communications Inc	`7.54ms` from Dallas, US
180.69.63.102	AS9318 SK Broadband Co Ltd	`2.81ms` from Incheon, KR
96.91.119.118	AS7922 Comcast Cable Communications, LLC	`4.88ms` from Miami, US
79.56.66.118	AS3269 Telecom Italia S.p.A.	`5.59ms` from Milan, IT
184.153.87.70	AS12271 Charter Communications Inc	`4.43ms` from Newark, US
81.80.116.22	AS3215 Orange S.A.	`4.28ms` from Paris, FR
221.0.165.118	AS4837 CHINA UNICOM China169 Backbone	`0.95ms` from Qingdao, CN
87.18.233.6	AS3269 Telecom Italia S.p.A.	`5.22ms` from Rome, IT
97.126.37.134	AS209 CenturyLink Communications, LLC	`1.70ms` from Seattle, US
217.79.249.134	AS29802 HIVELOCITY, Inc.	`0.68ms` from Tampa, US
217.89.150.118	AS3320 Deutsche Telekom AG	`0.80ms` from Berlin, DE
179.15.243.182	AS27831 Colombia Móvil	`12.88ms` from Bogota, CO
3.19.157.70	AS16509 Amazon.com, Inc.	`0.17ms` from Columbus, US
59.146.207.102	AS2527 Sony Network Communications Inc.	`1.68ms` from Tokyo, JP
96.92.136.230	AS7922 Comcast Cable Communications, LLC	`6.42ms` from Boston, US
74.130.91.134	AS10796 Charter Communications Inc	`19.90ms` from Cleveland, US
41.136.149.198	AS23889 Mauritius Telecom Ltd	`2.63ms` from Ebene, MU
182.182.63.102	AS17557 Pakistan Telecommunication Company Limited	`7.32ms` from Karachi, PK
89.250.3.102	AS41349 Limited Liability Company MVM Technology	`1.36ms` from Moscow, RU
75.151.156.22	AS7922 Comcast Cable Communications, LLC	`7.25ms` from New York City, US
88.173.17.6	AS12322 Free SAS	`17.84ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -m8 121.192.6.182

traceroute to 121.192.6.182 (121.192.6.182): 8 hops max, 52 byte packets

1 [AS133752] 203.23.128.253 0.274 ms

2 [AS133752] 64.120.119.6 1.95 ms

3 [] 31.31.38.36 0.255 ms

4 [] 123.255.91.118 2.631 ms

5 [AS4538] 101.4.114.181 167.947 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On March 13th 2026

What are IP address ranges?

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