121.194.96.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	121.194.0.0/15
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        121.194.0.0 - 121.195.255.255
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
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:22Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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:          121.195.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.194.96.0/20

Range	ASN	Company	Num of IPs
121.194.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 121.194.0.0/16

Range	ASN	Company	Num of IPs
121.194.0.0/15	AS4538	China Education and Research Network	131,072

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
223.72.210.196	AS56048 China Mobile Communicaitons Corporation	`2.75ms` from Beijing, CN
197.48.95.116	AS8452 TE-AS	`7.95ms` from Cairo, EG
97.187.25.132	AS6167 Verizon Business	`11.34ms` from Chicago, US
3.129.101.68	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
116.136.163.36	AS4837 CHINA UNICOM China169 Backbone	`4.00ms` from Hohhot, CN
82.9.39.196	AS5089 Virgin Media Limited	`5.95ms` from London, GB
88.0.104.84	AS3352 TELEFONICA DE ESPANA S.A.U.	`2.99ms` from Madrid, ES
189.160.125.132	AS8151 UNINET	`1.91ms` from Monterrey, MX
72.185.148.116	AS33363 Charter Communications, Inc	`11.87ms` from Orlando, US
60.103.228.180	AS17676 SoftBank Corp.	`3.62ms` from Osaka, JP
176.170.2.68	AS5410 Bouygues Telecom SA	`6.38ms` from Paris, FR
73.96.169.228	AS7922 Comcast Cable Communications, LLC	`7.98ms` from Portland, US
38.121.225.52	AS273127 VITERI HERNANDEZ CHRYSTIAN PATRICIO	`4.89ms` from Quito, EC
121.144.5.116	AS4766 Korea Telecom	`6.63ms` from Seoul, KR
80.216.151.4	AS1257 Tele2 Sverige AB	`4.24ms` from Stockholm, SE
64.202.123.132	AS25773 RADWARE INC.	`0.35ms` from Toronto, CA
166.117.63.20	AS16509 Amazon.com, Inc.	`0.04ms` from Bangkok, TH
74.135.196.196	AS10796 Charter Communications Inc	`9.28ms` from Chicago, US
34.66.199.52	AS396982 Google LLC	`0.10ms` from Council Bluffs, US
87.150.91.228	AS3320 Deutsche Telekom AG	`3.98ms` from Frankfurt am Main, DE
206.255.131.4	AS53508 Cablelynx	`6.25ms` from Kansas City, US
49.244.224.4	AS23752 Nepal Telecommunications Corporation, Internet Services,	`2.34ms` from Kathmandu, NP
95.249.147.100	AS3269 Telecom Italia S.p.A.	`6.46ms` from Milan, IT
74.77.44.196	AS11351 Charter Communications Inc	`13.02ms` from New York City, US
133.167.29.52	AS9371 SAKURA Internet Inc.	`0.31ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f3 -m18 121.194.101.123

traceroute to 121.194.101.123 (121.194.101.123): 18 hops max, 52 byte packets

3 [AS1299] 213.248.89.118 1.804 ms

4 [AS1299] 62.115.136.230 2.257 ms

5 *

6 [AS1299] 62.115.140.211 14.648 ms

7 [AS1299] 62.115.47.45 16.907 ms

8 *

9 *

10 *

11 [AS58453] 223.119.81.94 179.111 ms

12 [AS4538] 101.4.114.221 216.877 ms

13 [AS4538] 101.4.114.169 224.203 ms

14 *

15 [AS4538] 101.4.112.98 213.533 ms

16 *

17 *

18 *

Measurement taken from

IPinfo ProbeNet in Copenhagen, DK

On December 20th 2025

What are IP address ranges?

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