125.221.32.0/21

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 125.216.0.0/13
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 125.221.32.0/21

Range ASN Company Num of IPs
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
125.221.208.0/21 AS4538 China Education and Research Network 2,048
125.221.192.0/21 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 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
125.221.38.5 whvcse.edu.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

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

IP Address ASN Details
125.221.39.254 AS4538 China Education and Research Network Center 2.04ms 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
69.23.228.69 AS10796 Charter Communications Inc 13.04ms from Columbus, US
123.25.108.53 AS45899 VNPT Corp 7.11ms from Da Nang, VN
182.177.1.229 AS17557 Pakistan Telecommunication Company Limited 1.74ms from Islamabad, PK
81.187.210.181 AS20712 Andrews & Arnold Ltd 2.02ms from London, GB
51.219.12.197 AS31655 Gamma Telecom Holdings Ltd 3.63ms from London, GB
94.228.12.85 AS42666 Embou Nuevas Tecnologias SL 12.58ms from Madrid, ES
84.120.51.149 AS6739 VODAFONE ONO, S.A. 14.92ms from Madrid, ES
96.6.147.85 AS32787 Akamai Technologies, Inc. 0.19ms from Milan, IT
104.196.70.229 AS396982 Google LLC 0.13ms from Moncks Corner, US
119.25.25.165 AS9617 JCOM Co., Ltd. 8.36ms from Osaka, JP
52.235.29.53 AS8075 Microsoft Corporation 0.16ms from Quebec, CA
38.173.123.245 AS398823 PEG TECH INC 7.83ms from San Jose, US
216.200.69.149 AS6461 Zayo Bandwidth 0.67ms from Seattle, US
1.249.109.85 AS9318 SK Broadband Co Ltd 5.32ms from Seoul, KR
84.241.130.69 AS20847 Previder B.V. 1.85ms from Amsterdam, NL
52.234.168.5 AS8075 Microsoft Corporation 0.33ms from Ashburn, US
54.212.196.197 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
152.200.193.229 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 2.34ms from Bogota, CO
18.222.214.5 AS16509 Amazon.com, Inc. 0.65ms from Columbus, US
175.30.18.181 AS4134 CHINANET-BACKBONE 11.84ms from Dalian, CN
185.193.40.21 AS206219 WideVoice, LLC 0.48ms from Frankfurt am Main, DE
85.195.81.53 AS29066 velia.net Internetdienste GmbH 0.41ms from Frankfurt am Main, DE
77.0.148.149 AS6805 Telefonica Germany GmbH & Co.OHG 2.48ms from Hamburg, DE
175.21.57.21 AS4837 CHINA UNICOM China169 Backbone 17.99ms from Liaoyang, CN
136.168.165.5 AS2152 CENIC 9.60ms from Los Angeles, US

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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