121.194.64.0/20

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 121.194.64.0/20

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
121.194.96.0/20 AS4538 China Education and Research Network 4,096
121.194.32.0/20 AS4538 China Education and Research Network 4,096
121.194.112.0/20 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
92.75.95.132 AS3209 Vodafone GmbH 8.15ms from Berlin, DE
186.3.174.196 AS27947 Telconet S.A 2.04ms from Guayaquil, EC
36.94.208.116 AS7713 PT Telekomunikasi Indonesia 0.76ms from Jakarta, ID
23.42.254.20 AS16625 Akamai Technologies, Inc. 0.08ms from Johannesburg, ZA
85.242.236.36 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 5.82ms from Lisbon, PT
86.149.70.164 AS2856 British Telecommunications PLC 4.35ms from London, GB
94.13.51.196 AS5607 Sky UK Limited 10.69ms from London, GB
75.84.106.164 AS20001 Charter Communications Inc 5.51ms from Los Angeles, US
187.223.76.148 AS8151 UNINET 19.77ms from Los Angeles, US
104.23.139.148 AS13335 Cloudflare, Inc. 0.13ms from Santiago de Queretaro, MX
211.221.107.100 AS4766 Korea Telecom 1.46ms from Seoul, KR
78.88.91.212 AS29314 VECTRA S.A. 9.15ms from Warsaw, PL
111.192.37.164 AS4808 China Unicom Beijing Province Network 3.46ms from Beijing, CN
20.162.9.68 AS8075 Microsoft Corporation 0.19ms from Cardiff, GB
98.13.56.52 AS11351 Charter Communications Inc 16.69ms from Chicago, US
81.71.218.164 AS45090 Shenzhen Tencent Computer Systems Company Limited 3.48ms from Guangzhou, CN
175.172.33.84 AS4837 CHINA UNICOM China169 Backbone 12.91ms from Liaoyang, CN
87.81.67.164 AS5607 Sky UK Limited 2.01ms from London, GB
123.208.212.196 AS135887 Belong (Telstra Limited) 12.61ms from Melbourne, AU
61.190.123.20 AS4134 CHINANET-BACKBONE 10.27ms from Nanchang, CN
71.172.230.116 AS701 Verizon Business 1.61ms from New York City, US
191.242.21.180 AS263466 M.P. TELECOM LTDA - EPP 15.02ms from Osasco, BR
129.240.250.20 AS224 SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDOR 1.95ms from Oslo, NO
37.151.119.132 AS9198 JSC Kazakhtelecom 0.80ms from Pavlodar, KZ
210.215.109.20 AS17766 Nexon Asia Pacific Pty Ltd 0.23ms from Sydney, AU

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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