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 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 121.192.4.0/22

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
121.192.4.27	AS4538 China Education and Research Network Center	`6.18ms` 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
96.228.47.118	AS701 Verizon Business	`4.73ms` from Ashburn, US
111.199.134.150	AS4808 China Unicom Beijing Province Network	`3.94ms` from Beijing, CN
134.36.3.86	AS786 Jisc Services Limited	`10.67ms` from Chester, GB
95.153.95.246	AS1547 INTERDNESTRKOM, Sovmestnoe Zakrytoe Aktsionernoe Obshchestvo	`2.77ms` from Chisinau, MD
176.119.110.134	AS6876 TENET Scientific Production Enterprise LLC	`3.45ms` from Chisinau, MD
211.158.194.166	AS4837 CHINA UNICOM China169 Backbone	`1.95ms` from Chongqing, CN
92.148.210.134	AS3215 Orange S.A.	`3.58ms` from Frankfurt am Main, DE
96.82.79.182	AS7922 Comcast Cable Communications, LLC	`4.69ms` from Fremont, US
194.89.17.134	AS1759 Telia Finland Oyj	`1.09ms` from Helsinki, FI
108.254.201.166	AS7018 AT&T Enterprises, LLC	`2.29ms` from Houston, US
118.218.151.102	AS9318 SK Broadband Co Ltd	`4.08ms` from Incheon, KR
211.206.250.102	AS9318 SK Broadband Co Ltd	`1.36ms` from Incheon, KR
209.50.8.102	AS15108 Allo Communications LLC	`4.28ms` from Lincoln, US
94.133.9.198	AS2860 NOS COMUNICACOES, S.A.	`15.58ms` from Lisbon, PT
86.188.61.134	AS2856 British Telecommunications PLC	`2.51ms` from London, GB
75.206.60.118	AS6167 Verizon Business	`15.98ms` from Miami, US
36.26.91.86	AS58461 CT-HangZhou-IDC	`4.92ms` from Ningbo, CN
82.64.160.118	AS12322 Free SAS	`1.61ms` from Paris, FR
75.74.63.102	AS7922 Comcast Cable Communications, LLC	`7.12ms` from Pompano Beach, US
40.114.184.246	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
156.40.156.22	AS3527 National Institutes of Health	`1.76ms` from Ashburn, US
197.46.237.214	AS8452 TE-AS	`6.10ms` from Cairo, EG
68.61.34.6	AS7922 Comcast Cable Communications, LLC	`7.91ms` from Flint, US
202.98.222.102	AS4134 CHINANET-BACKBONE	`3.45ms` from Guiyang, CN
45.64.109.166	AS132839 POWER LINE DATACENTER	`1.06ms` from Hong Kong, HK

Traceroute

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

traceroute -a -n -q1 -f6 121.192.4.1

traceroute to 121.192.4.1 (121.192.4.1): 64 hops max, 52 byte packets

6 [AS4538] 101.4.131.17 6.78 ms

7 [AS4538] 219.224.102.217 6.785 ms

8 *

9 *

10 [AS4538] 121.192.4.1 6.775 ms

Measurement taken from

IPinfo ProbeNet in Hangzhou, CN

On February 16th 2026

What are IP address ranges?

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