121.195.180.0/22

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	121.194.0.0/15
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:         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:          121.194.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.195.180.0/22

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 121.195.0.0/16

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
208.81.193.6	AS26123 Independence Telecommunications Utility	`10.87ms` from Chicago, US
12.76.200.230	AS7018 AT&T Enterprises, LLC	`1.28ms` from Chicago, US
35.226.58.214	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
20.118.4.166	AS8075 Microsoft Corporation	`0.36ms` from Des Moines, US
217.93.148.150	AS3320 Deutsche Telekom AG	`8.68ms` from Frankfurt am Main, DE
35.241.125.22	AS396982 Google LLC	`0.13ms` from Hong Kong, HK
125.214.203.86	AS4515 PCCW IMS Ltd (PCCW Business Internet Access)	`1.33ms` from Hong Kong, HK
69.72.86.246	AS45753 Netsec Limited	`0.54ms` from Hong Kong, HK
82.32.116.198	AS5089 Virgin Media Limited	`9.26ms` from London, GB
196.235.91.166	AS37492 Orange Tunisie	`18.18ms` from Marseille, FR
59.96.84.54	AS9829 National Internet Backbone	`4.48ms` from Mumbai, IN
216.60.31.6	AS7018 AT&T Enterprises, LLC	`11.85ms` from San Antonio, US
64.65.223.6	AS7029 Windstream Communications LLC	`0.19ms` from San Jose, US
123.158.103.134	AS4837 CHINA UNICOM China169 Backbone	`5.62ms` from Shanghai, CN
61.63.233.166	AS9676 SaveCom Internation Inc.	`3.44ms` from Taipei, TW
54.150.112.22	AS16509 Amazon.com, Inc.	`0.18ms` from Tokyo, JP
44.247.210.102	AS16509 Amazon.com, Inc.	`0.28ms` from Boardman, US
70.249.176.118	AS7018 AT&T Enterprises, LLC	`4.00ms` from Chicago, US
104.185.133.86	AS7018 AT&T Enterprises, LLC	`6.36ms` from Chicago, US
76.112.196.134	AS7922 Comcast Cable Communications, LLC	`8.49ms` from Flint, US
54.93.211.230	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
217.89.196.6	AS3320 Deutsche Telekom AG	`6.78ms` from Frankfurt am Main, DE
112.124.16.6	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.29ms` from Hangzhou, CN
27.64.193.214	AS7552 Viettel Group	`0.91ms` from Ho Chi Minh City, VN
90.243.211.54	AS5378 Vodafone Limited	`1.81ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -m17 121.195.182.231

traceroute to 121.195.182.231 (121.195.182.231): 17 hops max, 52 byte packets

1 [AS398823] 107.148.151.254 22.525 ms

2 *

3 *

4 *

5 [AS4134] 218.30.49.65 28.424 ms

6 *

7 *

8 [] 59.43.22.5 157.576 ms

9 *

10 *

11 *

12 [AS4134] 202.97.118.122 199.176 ms

13 [AS4538] 101.4.118.25 191.518 ms

14 [AS4538] 101.4.113.234 194.113 ms

15 *

16 *

17 *

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On December 28th 2025

What are IP address ranges?

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