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:         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 2025-01-22
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-01-22T13:47:43Z
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 2025-01-22
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-01-22T16:25:45Z
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 121.194.112.0/20

Range ASN Company Num of IPs
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.192.0.0/14 AS4538 China Education and Research Network 262,144

Nearby Ranges

BGP prefixes that overlap with 121.194.0.0/16

Range ASN Company Num of IPs
121.192.0.0/14 AS4538 China Education and Research Network 262,144
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.194.224.0/19 AS4538 China Education and Research Network 8,192
121.194.192.0/19 AS4538 China Education and Research Network 8,192
121.194.0.0/20 AS4538 China Education and Research Network 4,096
121.194.16.0/20 AS4538 China Education and Research Network 4,096
121.194.64.0/20 AS4538 China Education and Research Network 4,096
121.194.96.0/20 AS4538 China Education and Research Network 4,096
121.194.32.0/20 AS4538 China Education and Research Network 4,096
121.194.176.0/20 AS4538 China Education and Research Network 4,096
121.194.144.0/20 AS4538 China Education and Research Network 4,096
121.194.48.0/20 AS4538 China Education and Research Network 4,096
121.194.80.0/21 AS4538 China Education and Research Network 2,048
121.194.92.0/22 AS4538 China Education and Research Network 1,024
121.194.88.0/22 AS4538 China Education and Research Network 1,024
121.194.172.0/22 AS4538 China Education and Research Network 1,024
121.194.174.0/23 AS4538 China Education and Research Network 512
121.194.172.0/23 AS4538 China Education and Research Network 512
121.194.167.0/24 AS4538 China Education and Research Network 256
121.194.4.0/24 AS4538 China Education and Research Network 256
121.194.4.0/24 AS133111 China Education and Research Network 256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
52.166.6.68 AS8075 Microsoft Corporation 0.21ms from Amsterdam, NL
47.26.10.164 AS20115 Charter Communications LLC 10.06ms from Chicago, US
24.4.1.228 AS7922 Comcast Cable Communications, LLC 9.95ms from Fremont, US
62.106.6.68 AS8829 ElmoNet Oy 5.78ms from Helsinki, FI
212.140.81.244 AS2856 British Telecommunications PLC 1.68ms from London, GB
92.25.170.20 AS13285 TalkTalk Communications Limited 6.92ms from Manchester, GB
164.215.8.100 AS35432 Cablenet Communication Systems plc 6.46ms from Nicosia, CY
93.30.33.196 AS15557 Societe Francaise Du Radiotelephone - SFR SA 12.61ms from Paris, FR
27.24.187.244 AS4134 CHINANET-BACKBONE 3.84ms from Wuhan, CN
213.243.170.36 AS16086 DNA Oyj 9.45ms from Helsinki, FI
184.189.241.68 AS22773 Cox Communications Inc. 8.95ms from Los Angeles, US
212.9.24.52 AS8681 JT (Jersey) Limited 7.28ms from Paris, FR
210.108.10.4 AS3786 LG DACOM Corporation 1.39ms from Seoul, KR
157.230.37.148 AS14061 DigitalOcean, LLC 0.25ms from Singapore, SG
61.53.125.228 AS4837 CHINA UNICOM China169 Backbone 3.53ms from Zhengzhou, CN
195.229.199.4 AS5384 Emirates Internet 2.22ms from Al Fujairah City, AE
68.83.178.68 AS7922 Comcast Cable Communications, LLC 8.18ms from Ashburn, US
195.143.183.196 AS3257 GTT Communications Inc. 0.38ms from Frankfurt am Main, DE
157.97.23.20 AS44735 Nova hf 1.58ms from Hafnarfjoerdur, IS
113.169.18.212 AS45899 VNPT Corp 2.56ms from Ho Chi Minh City, VN
181.131.17.148 AS13489 UNE EPM TELECOMUNICACIONES S.A. 7.25ms from Medellin, CO
3.235.207.212 AS14618 Amazon.com, Inc. 0.24ms from Reston, US
179.190.9.4 AS52925 Ascenty Data Centers e Telecomunicações S/A 0.37ms from Sao Paulo, BR
58.65.68.36 AS9694 Seokyung Cable Television Co.. Ltd. 7.17ms from Seoul, KR
113.119.84.116 AS4134 CHINANET-BACKBONE 1.89ms from Guangzhou, CN

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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