1. All IP Ranges
  2. 121.0.0.0/8
  3. AS4538  | 121.194.0.0/15

121.194.0.0/15

AS4538  ·  China Education and Research Network Center

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

Country China
Domain cernet.edu.cn
ASN AS4538
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

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/8

Range ASN Company Num of IPs
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS38395 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.160.0.0/11 AS38087 Korea Telecom 2,097,152
121.160.0.0/11 AS38093 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.160.0.0/11 AS55622 Korea Telecom 2,097,152
121.160.0.0/11 AS17862 Korea Telecom 2,097,152
121.160.0.0/11 AS17859 Korea Telecom 2,097,152
121.160.0.0/11 AS38404 Korea Telecom 2,097,152
121.160.0.0/11 AS55615 Korea Telecom 2,097,152
121.128.0.0/11 AS38394 Korea Telecom 2,097,152
121.160.0.0/11 AS38391 Korea Telecom 2,097,152
121.128.0.0/11 AS38412 Korea Telecom 2,097,152
121.160.0.0/11 AS38415 Korea Telecom 2,097,152
121.128.0.0/11 AS38399 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS152214 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS9843 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.160.0.0/11 AS38392 Korea Telecom 2,097,152
121.128.0.0/11 AS38126 Korea Telecom 2,097,152
121.128.0.0/11 AS131792 Korea Telecom 2,097,152
121.160.0.0/11 AS10167 Korea Telecom 2,097,152
121.128.0.0/11 AS9870 Korea Telecom 2,097,152
121.128.0.0/11 AS9526 Korea Telecom 2,097,152
121.128.0.0/11 AS9524 Korea Telecom 2,097,152
121.128.0.0/11 AS46002 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.160.0.0/11 AS9708 Korea Telecom 2,097,152
121.160.0.0/11 AS38431 Korea Telecom 2,097,152
121.160.0.0/11 AS45399 Korea Telecom 2,097,152
121.128.0.0/11 AS38697 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.128.0.0/11 AS3786 Korea Telecom 2,097,152
121.128.0.0/11 AS9530 Korea Telecom 2,097,152
121.128.0.0/11 AS9696 Korea Telecom 2,097,152
121.160.0.0/11 AS3786 Korea Telecom 2,097,152
121.160.0.0/11 AS9684 Korea Telecom 2,097,152
121.160.0.0/11 AS9530 Korea Telecom 2,097,152
121.160.0.0/11 AS9778 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS9776 Korea Telecom 2,097,152
121.160.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS18023 Korea Telecom 2,097,152
121.160.0.0/11 AS38696 Korea Telecom 2,097,152
121.160.0.0/11 AS38427 Korea Telecom 2,097,152
121.128.0.0/11 AS9638 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576

Hosted domains

There are 107 domain names hosted across 70 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.194.2.250 tsingshang.com 5
121.194.10.142 wantiku.com 4
121.194.10.213 zxx.edu.cn 2
121.194.4.83 gjxkzzs.com 2
121.194.4.151 cnki.com.cn 1
121.194.14.69 xanet.edu.cn 1
121.194.4.43 lilunjie.net 1
121.194.17.67 sportinfo.org.cn 1
121.194.4.69 xn--prs68c96jl8cywc64xw8e.com 1
121.194.4.36 cjmri.cn 1
121.194.4.196 hbyjqk.com 1
121.194.4.58 cjprs.org.cn 1
121.194.9.33 wutaotao.top 1
121.194.4.114 remotesensing.org.cn 1
121.194.4.68 feedindustry.com.cn 1
121.194.4.25 liaoningyixue.com 1
121.194.3.226 zjzry.cn 1
121.194.4.28 wooltex.org.cn 1
121.194.4.29 jsjjy.com 1
121.194.9.70 icee-unesco.org 1

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
Read more

Pingable IPs

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

IP Address ASN Details
121.194.8.5 AS4538 China Education and Research Network Center 2.52ms from Beijing, CN
121.194.16.25 AS4538 China Education and Research Network Center 4.55ms from Beijing, CN
121.194.17.13 AS4538 China Education and Research Network Center 34.38ms from Hong Kong, HK
121.194.62.85 AS4538 China Education and Research Network Center 3.69ms from Beijing, CN
121.194.63.85 AS4538 China Education and Research Network Center 3.38ms from Beijing, CN
121.194.13.99 AS4538 China Education and Research Network Center 3.08ms from Beijing, CN
121.194.2.154 AS4538 China Education and Research Network Center 2.90ms from Beijing, CN
121.194.11.28 AS4538 China Education and Research Network Center 2.53ms from Beijing, CN
121.194.9.229 AS4538 China Education and Research Network Center 2.53ms from Beijing, CN
121.194.10.79 AS4538 China Education and Research Network Center 2.55ms from Beijing, CN
121.194.58.237 AS4538 China Education and Research Network Center 4.17ms from Beijing, CN
121.194.1.6 AS4538 China Education and Research Network Center 2.52ms from Beijing, CN
121.194.15.154 AS4538 China Education and Research Network Center 2.69ms from Beijing, CN
121.194.3.205 AS4538 China Education and Research Network Center 3.17ms from Beijing, CN
121.194.14.105 AS4538 China Education and Research Network Center 3.94ms from Shanghai, CN
121.194.4.254 AS4538 China Education and Research Network Center 2.50ms from Beijing, CN
121.194.33.177 AS4538 China Education and Research Network Center 5.88ms from Beijing, CN
121.194.32.1 AS4538 China Education and Research Network Center 2.90ms from Beijing, CN
121.194.5.34 AS4538 China Education and Research Network Center 2.54ms from Beijing, CN
121.194.0.27 AS4538 China Education and Research Network Center 3.12ms from Beijing, CN
121.194.57.160 AS4538 China Education and Research Network Center 3.35ms from Beijing, CN
121.194.7.24 AS4538 China Education and Research Network Center 2.61ms from Beijing, CN
121.195.232.33 AS4538 China Education and Research Network Center 6.34ms from Beijing, CN
121.195.187.51 AS4538 China Education and Research Network Center 3.25ms from Shanghai, CN
121.195.229.28 AS4538 China Education and Research Network Center 4.46ms from Beijing, 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
79.107.57.127 AS25472 Nova Telecommunications & Media Single Member S.A 7.71ms from Athens, GR
213.22.32.143 AS2860 NOS COMUNICACOES, S.A. 8.78ms from Braga, PT
197.49.173.31 AS8452 TE-AS 5.69ms from Cairo, EG
209.76.32.63 AS7018 AT&T Enterprises, LLC 6.84ms from Chicago, US
97.214.87.207 AS6167 Verizon Business 13.92ms from San Jose, US
122.46.47.95 AS17858 LG POWERCOMM 2.18ms from Seoul, KR
112.167.17.79 AS4766 Korea Telecom 2.29ms from Seoul, KR
46.210.127.127 AS1680 Cellcom Fixed Line Communication L.P 14.01ms from Tel Aviv, IL
119.105.106.15 AS2516 KDDI CORPORATION 2.31ms from Tokyo, JP
73.54.200.223 AS7922 Comcast Cable Communications, LLC 4.78ms from Atlanta, US
181.63.47.239 AS10620 Telmex Colombia S.A. 15.34ms from Bogota, CO
149.108.93.255 AS23700 Linknet-Fastnet ASN 1.13ms from Jakarta, ID
38.199.43.255 AS204170 Awaser Oman LLC 1.51ms from Muscat, OM
200.112.93.95 AS7418 TELEFÓNICA CHILE S.A. 3.16ms from Santiago, CL
187.132.27.79 AS8151 UNINET 14.26ms from Santiago de Queretaro, MX
74.102.150.79 AS701 Verizon Business 2.37ms from Secaucus, US
151.241.130.63 AS36530 IDC Cube 0.45ms from Tokyo, JP
94.152.224.15 AS29522 Cyber_Folks S.A. 4.97ms from Warsaw, PL
94.182.4.255 AS43212 Pejvak Ertebatat Atiyeh Roshan Company (P.J.S.) 17.54ms from Yerevan, AM
192.240.89.239 AS394744 Randolph-Macon College 4.36ms from Ashburn, US
24.14.181.111 AS7922 Comcast Cable Communications, LLC 3.86ms from Chicago, US
3.12.74.111 AS16509 Amazon.com, Inc. 0.14ms from Columbus, US
52.58.237.143 AS16509 Amazon.com, Inc. 0.18ms from Frankfurt am Main, DE
149.224.7.95 AS15943 wilhelm.tel GmbH 0.47ms from Hamburg, DE
120.26.106.143 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 4.65ms from Hangzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -m18 121.194.17.59
traceroute to 121.194.17.59 (121.194.17.59): 18 hops max, 52 byte packets
2 *
3 *
4 *
5 [AS6939] 184.105.65.93 1.867 ms
6 [AS6939] 184.104.197.5 107.635 ms
7 *
8 *
9 *
10 *
11 [] 123.255.91.118 200.516 ms
12 [AS4538] 101.4.114.181 219.777 ms
13 *
14 [AS4538] 101.4.117.81 229.653 ms
15 [AS4538] 101.4.116.94 230.591 ms
16 *
17 *
18 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs