121.194.112.0/20

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 121.194.112.0/20

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

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
158.69.131.164 AS16276 OVH SAS 0.08ms from Beauharnois, CA
20.102.221.244 AS8075 Microsoft Corporation 0.75ms from Chicago, US
2.241.145.84 AS6805 Telefonica Germany GmbH & Co.OHG 2.23ms from Hamburg, DE
35.143.201.148 AS33363 Charter Communications, Inc 6.58ms from Orlando, US
74.103.45.100 AS701 Verizon Business 3.73ms from Philadelphia, US
201.37.80.84 AS28573 Claro NXT Telecomunicacoes Ltda 6.80ms from Porto Alegre, BR
98.89.218.132 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
190.167.79.36 AS6400 Compañía Dominicana de Teléfonos S. A. 8.27ms from Santo Domingo, DO
115.3.114.180 AS4766 Korea Telecom 1.96ms from Seoul, KR
13.51.115.228 AS16509 Amazon.com, Inc. 0.14ms from Stockholm, SE
37.250.136.4 AS44034 Hi3G Access AB 6.89ms from Stockholm, SE
179.129.195.84 AS26599 TELEFÔNICA BRASIL S.A 1.57ms from São Paulo, BR
157.101.249.20 AS7677 Dai Nippon Printing Co., Ltd 1.75ms from Tokyo, JP
182.54.170.36 AS45637 UniFone New Zealand Ltd 16.45ms from Auckland, NZ
34.160.96.132 AS396982 Google LLC 0.08ms from Melbourne, AU
79.10.40.148 AS3269 Telecom Italia S.p.A. 3.93ms from Milan, IT
83.253.180.196 AS1257 Tele2 Sverige AB 1.95ms from Stockholm, SE
18.178.197.84 AS16509 Amazon.com, Inc. 0.19ms from Tokyo, JP
105.99.117.116 AS36947 Telecom Algeria 9.25ms from Valencia, ES
83.175.70.164 AS31510 Innsbrucker Kommunalbetriebe AG 8.35ms from Vienna, AT
164.126.136.36 AS39603 P4 Sp. z o.o. 8.93ms from Warsaw, PL
71.228.4.244 AS7922 Comcast Cable Communications, LLC 8.39ms from Chicago, US
80.128.195.4 AS3320 Deutsche Telekom AG 3.91ms from Frankfurt am Main, DE
77.189.210.116 AS6805 Telefonica Germany GmbH & Co.OHG 2.52ms from Frankfurt am Main, DE
189.171.177.20 AS8151 UNINET 1.83ms from Mexico City, MX

Traceroute

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

$
traceroute -a -n -q1 -f3 -m13 121.194.121.67
traceroute to 121.194.121.67 (121.194.121.67): 13 hops max, 52 byte packets
3 [AS749] 11.95.19.225 2.306 ms
4 *
5 *
6 *
7 *
8 [AS4637] 210.57.81.65 64.364 ms
9 [] 123.255.91.118 19.813 ms
10 [AS4538] 101.4.114.181 55.087 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Manila, PH
On

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