125.221.192.0/21

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 125.221.192.0/20
Registry APNIC
ID WHR-CERNET

WHOIS Details

inetnum:        125.220.0.0 - 125.221.255.255
netname:        WHR-CERNET
descr:          China Education and Research Network
descr:          Wuhan 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:          125.221.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 125.221.192.0/21

Range ASN Company Num of IPs
125.221.192.0/20 AS4538 China Education and Research Network 4,096
125.216.0.0/13 AS4538 China Education and Research Network 524,288

Nearby Ranges

BGP prefixes that overlap with 125.221.0.0/16

Range ASN Company Num of IPs
125.216.0.0/13 AS4538 China Education and Research Network 524,288
125.221.160.0/19 AS4538 China Education and Research Network 8,192
125.221.64.0/19 AS4538 China Education and Research Network 8,192
125.221.96.0/20 AS4538 China Education and Research Network 4,096
125.221.224.0/20 AS4538 China Education and Research Network 4,096
125.221.192.0/20 AS4538 China Education and Research Network 4,096
125.221.48.0/20 AS4538 China Education and Research Network 4,096
125.221.112.0/20 AS4538 China Education and Research Network 4,096
125.221.32.0/21 AS4538 China Education and Research Network 2,048
125.221.208.0/21 AS4538 China Education and Research Network 2,048
125.221.128.0/22 AS4538 China Education and Research Network 1,024
125.221.16.0/22 AS4538 China Education and Research Network 1,024
125.221.242.0/23 AS4538 China Education and Research Network 512
125.221.8.0/23 AS4538 China Education and Research Network 512
125.221.216.0/23 AS4538 China Education and Research Network 512
125.221.244.0/23 AS4538 China Education and Research Network 512
125.221.240.0/23 AS4538 China Education and Research Network 512
125.221.10.0/23 AS4538 China Education and Research Network 512
125.221.40.0/23 AS4538 China Education and Research Network 512
125.221.250.0/23 AS4538 China Education and Research Network 512
125.221.30.0/23 AS4538 China Education and Research Network 512
125.221.252.0/23 AS4538 China Education and Research Network 512
125.221.4.0/23 AS4538 China Education and Research Network 512
125.221.218.0/23 AS4538 China Education and Research Network 512
125.221.220.0/23 AS4538 China Education and Research Network 512
125.221.254.0/23 AS4538 China Education and Research Network 512
125.221.248.0/23 AS4538 China Education and Research Network 512
125.221.2.0/23 AS4538 China Education and Research Network 512
125.221.42.0/23 AS4538 China Education and Research Network 512
125.221.200.0/23 AS4538 China Education and Research Network 512
125.221.12.0/23 AS4538 China Education and Research Network 512
125.221.14.0/23 AS4538 China Education and Research Network 512
125.221.44.0/23 AS4538 China Education and Research Network 512
125.221.20.0/24 AS4538 China Education and Research Network 256
125.221.40.0/24 AS4538 China Education and Research Network 256
125.221.21.0/24 AS4538 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

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

IP Address ASN Details
125.221.192.2 AS4538 China Education and Research Network Center 7.66ms from Wuhan, 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
20.234.214.101 AS8075 Microsoft Corporation 0.21ms from Amsterdam, NL
20.25.46.133 AS8075 Microsoft Corporation 0.42ms from Ashburn, US
184.30.120.85 AS16625 Akamai Technologies, Inc. 0.48ms from Atlanta, US
175.102.184.53 AS4847 China Networks Inter-Exchange 3.09ms from Beijing, CN
54.213.61.181 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
190.227.27.5 AS7303 Telecom Argentina S.A. 1.98ms from Buenos Aires, AR
162.210.12.5 AS26650 Alpha Technologies Inc 11.82ms from Chicago, US
83.71.88.117 AS5466 Eircom Limited 0.67ms from Dublin, IE
109.210.138.197 AS3215 Orange S.A. 1.93ms from Marseille, FR
124.135.165.245 AS4837 CHINA UNICOM China169 Backbone 7.72ms from Qingdao, CN
4.42.90.213 AS3356 Level 3 Parent, LLC 0.78ms from San Diego, US
35.163.116.5 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
64.76.86.53 AS3549 Level 3 Parent, LLC 1.02ms from Bogota, CO
144.91.241.53 AS53828 NETWORK INNOVATIONS, LLC 0.59ms from Chicago, US
210.212.100.37 AS9829 National Internet Backbone 5.16ms from Delhi, IN
103.209.251.101 AS17440 PT Sinar Alam Abadi 0.50ms from Jakarta, ID
68.194.156.21 AS6128 Cablevision Systems Corp. 2.52ms from New York City, US
71.8.187.133 AS20115 Charter Communications LLC 16.50ms from Seattle, US
2.68.53.181 AS44034 Hi3G Access AB 13.99ms from Stockholm, SE
181.102.171.85 AS7303 Telecom Argentina S.A. 12.33ms from Buenos Aires, AR
95.61.122.181 AS12430 VODAFONE ESPANA S.A.U. 14.30ms from Madrid, ES
76.245.77.181 AS7018 AT&T Enterprises, LLC 9.02ms from Miami, US
168.151.25.5 AS397408 iperceptions inc. 0.78ms from Montreal, CA
104.189.226.5 AS7018 AT&T Enterprises, LLC 5.08ms from San Jose, US
85.14.14.181 AS8262 Evolink EAD 0.48ms from Sofia, BG

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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