121.194.16.0/20

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 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:          121.195.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.194.16.0/20

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 is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.194.17.67 sportinfo.org.cn 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

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
62.132.12.20 AS1136 KPN B.V. 1.96ms from Amsterdam, NL
217.239.165.20 AS3320 Deutsche Telekom AG 0.81ms from Berlin, DE
100.23.243.100 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
52.252.81.196 AS8075 Microsoft Corporation 0.33ms from Boydton, US
69.132.10.20 AS11426 Charter Communications Inc 4.61ms from Charlotte, US
14.171.209.52 AS45899 VNPT Corp 2.83ms from Hanoi, VN
176.93.24.228 AS16086 DNA Oyj 9.27ms from Helsinki, FI
20.197.63.196 AS8075 Microsoft Corporation 0.14ms from Lohogaon, IN
132.239.61.4 AS7377 University of California, San Diego 2.72ms from Los Angeles, US
115.163.35.68 AS2527 Sony Network Communications Inc. 3.69ms from Osaka, JP
193.48.89.36 AS2200 Renater 12.66ms from Paris, FR
12.9.136.4 AS14990 Avnet Inc. 1.74ms from Phoenix, US
3.212.218.148 AS14618 Amazon.com, Inc. 0.18ms from Reston, US
195.13.164.164 AS12578 SIA Tet 0.46ms from Riga, LV
91.210.7.228 AS48102 JSC Neksain 1.55ms from Saint Petersburg, RU
54.219.231.52 AS16509 Amazon.com, Inc. 0.18ms from San Jose, US
171.67.142.36 AS32 Stanford University 1.67ms from San Jose, US
54.206.43.148 AS16509 Amazon.com, Inc. 0.15ms from Sydney, AU
203.165.89.164 AS9824 JCOM Co., Ltd. 6.87ms from Tokyo, JP
45.224.142.100 AS265843 NUBICOM S.R.L. 16.27ms from Asuncion, PY
156.214.42.84 AS8452 TE-AS 3.55ms from Cairo, EG
175.10.90.36 AS4134 CHINANET BACKBONE 2.31ms from Changsha, CN
98.228.163.132 AS7922 Comcast Cable Communications, LLC 5.27ms from Chicago, US
81.20.140.180 AS33984 Surfplanet GmbH 1.75ms from Duesseldorf, DE
76.85.8.212 AS11427 Charter Communications Inc 14.58ms from Houston, US

Traceroute

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

$
traceroute -a -n -q1 -m21 121.194.29.28
traceroute to 121.194.29.28 (121.194.29.28): 21 hops max, 52 byte packets
1 [AS210756] 5.188.35.3 0.261 ms
2 *
3 *
4 [AS31133] 78.25.65.61 0.304 ms
5 *
6 *
7 *
8 *
9 [] 79.139.1.49 183.539 ms
10 [AS23764] 5.154.156.110 422.978 ms
11 [AS4134] 202.97.103.245 235.946 ms
12 [AS4134] 202.97.12.69 235.431 ms
13 [AS4134] 202.97.53.17 252.466 ms
14 *
15 *
16 *
17 [AS4538] 101.4.115.250 238.006 ms
18 [AS4538] 101.4.116.94 240.835 ms
19 *
20 *
21 *
Measurement taken from IPinfo ProbeNet in Yekaterinburg, RU
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.

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