125.221.200.0/23

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 125.221.200.0/23

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
125.221.192.0/21	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
125.221.12.0/23	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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Useful for Cybersecurity

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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
97.127.248.167	AS209 CenturyLink Communications, LLC	7.25ms from Chicago, US
93.116.247.183	AS8926 Moldtelecom SA	6.08ms from Chisinau, MD
79.227.156.7	AS3320 Deutsche Telekom AG	9.78ms from Frankfurt am Main, DE
139.189.67.199	AS4134 CHINANET-BACKBONE	3.88ms from Haikou, CN
223.199.61.231	AS4134 CHINANET-BACKBONE	2.03ms from Haikou, CN
27.109.228.55	AS4609 Companhia de Telecomunicacoes de Macau SARL	2.99ms from Hong Kong, HK
178.150.163.103	AS13188 CONTENT DELIVERY NETWORK LTD	7.09ms from Kyiv, UA
217.42.32.103	AS2856 British Telecommunications PLC	3.26ms from London, GB
46.173.222.183	AS56364 Garant-Park-Internet LLC	1.44ms from Moscow, RU
167.71.111.135	AS14061 DigitalOcean, LLC	0.21ms from New York City, US
108.50.236.135	AS701 Verizon Business	1.65ms from New York City, US
45.166.128.215	AS267957 NITRO TELECOM	2.32ms from Osasco, BR
85.167.190.167	AS2119 Telenor Norge AS	2.37ms from Oslo, NO
92.122.68.7	AS6762 TELECOM ITALIA SPARKLE S.p.A.	0.20ms from Palermo, IT
175.241.37.231	AS4766 Korea Telecom	6.43ms from Seoul, KR
210.97.251.71	AS9286 KINX	4.08ms from Seoul, KR
39.113.155.7	AS9318 SK Broadband Co Ltd	6.91ms from Seoul, KR
2.69.196.87	AS44034 Hi3G Access AB	7.79ms from Stockholm, SE
72.38.26.103	AS7992 Cogeco Connexion Inc.	6.76ms from Toronto, CA
59.70.13.87	AS4538 China Education and Research Network Center	7.12ms from Zhengzhou, CN
97.119.148.55	AS209 CenturyLink Communications, LLC	10.51ms from Chicago, US
121.205.72.231	AS4134 CHINANET-BACKBONE	4.96ms from Fuzhou, CN
87.92.115.135	AS16086 DNA Oyj	0.80ms from Helsinki, FI
116.196.135.7	AS131516 Jinhua Weian InfoTech Co., Ltd	2.02ms from Jinan, CN
37.55.215.167	AS6849 JSC "Ukrtelecom"	10.08ms from Kyiv, UA

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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