202.205.148.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.200.0.0/13
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        202.204.0.0 - 202.207.255.255
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
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:26Z
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

Overlapping Ranges

BGP prefixes that contain 202.205.148.0/24

Range	ASN	Company	Num of IPs
202.200.0.0/13	AS4538	China Education and Research Network	524,288
202.192.0.0/12	AS4538	China Education and Research Network	1,048,576

Nearby Ranges

BGP prefixes that overlap with 202.205.0.0/16

Range	ASN	Company	Num of IPs
202.192.0.0/12	AS4538	China Education and Research Network	1,048,576
202.200.0.0/13	AS4538	China Education and Research Network	524,288
202.205.160.0/20	AS4538	China Education and Research Network	4,096
202.205.64.0/20	AS4538	China Education and Research Network	4,096
202.205.80.0/20	AS4538	China Education and Research Network	4,096
202.205.16.0/20	AS24348	China Education and Research Network	4,096
202.205.176.0/20	AS4538	China Education and Research Network	4,096
202.205.16.0/20	AS4538	China Education and Research Network	4,096
202.205.112.0/20	AS4538	China Education and Research Network	4,096
202.205.208.0/20	AS4538	China Education and Research Network	4,096
202.205.96.0/21	AS4538	China Education and Research Network	2,048
202.205.104.0/22	AS4538	China Education and Research Network	1,024
202.205.224.0/22	AS4538	China Education and Research Network	1,024
202.205.144.0/22	AS4538	China Education and Research Network	1,024
202.205.158.0/23	AS4538	China Education and Research Network	512
202.205.252.0/23	AS4538	China Education and Research Network	512
202.205.117.0/24	AS4538	China Education and Research Network	256
202.205.149.0/24	AS4538	China Education and Research Network	256
202.205.131.0/24	AS4538	China Education and Research Network	256
202.205.151.0/24	AS4538	China Education and Research Network	256
202.205.232.0/24	AS4538	China Education and Research Network	256
202.205.127.0/24	AS4538	China Education and Research Network	256
202.205.108.0/24	AS4538	China Education and Research Network	256
202.205.112.0/24	AS4538	China Education and Research Network	256
202.205.130.0/24	AS4538	China Education and Research Network	256
202.205.68.0/24	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
2.23.72.232	AS16625 Akamai Technologies, Inc.	0.41ms from Duesseldorf, DE
81.78.172.88	AS5378 Vodafone Limited	5.79ms from London, GB
79.155.126.24	AS3352 TELEFONICA DE ESPANA S.A.U.	10.80ms from Madrid, ES
120.154.163.232	AS1221 Telstra Limited	10.29ms from Brisbane, AU
60.187.86.216	AS4134 CHINANET-BACKBONE	6.50ms from Hangzhou, CN
151.227.16.40	AS5607 Sky UK Limited	8.39ms from London, GB
154.209.242.184	AS203020 HostRoyale Technologies Pvt Ltd	1.64ms from Mumbai, IN
116.253.167.8	AS4134 CHINANET-BACKBONE	6.41ms from Nanning, CN
189.148.28.104	AS8151 UNINET	18.53ms from Santiago de Queretaro, MX
201.153.128.232	AS8151 UNINET	12.15ms from Santiago de Queretaro, MX
59.2.170.88	AS4766 Korea Telecom	5.20ms from Seoul, KR
48.217.206.8	AS8075 Microsoft Corporation	0.32ms from Ashburn, US
221.203.202.168	AS4837 CHINA UNICOM China169 Backbone	4.75ms from Liaoyang, CN
69.108.57.40	AS7018 AT&T Enterprises, LLC	2.13ms from Los Angeles, US
98.239.117.200	AS7922 Comcast Cable Communications, LLC	10.13ms from Los Angeles, US
216.122.142.24	AS396420 Valley Fiber Ltd.	9.05ms from Minneapolis, US
83.135.211.120	AS8881 1&1 Versatel Deutschland GmbH	12.04ms from Nuernberg, DE
177.162.24.216	AS26599 TELEFÔNICA BRASIL S.A	6.30ms from Osasco, BR
71.250.211.72	AS701 Verizon Business	1.78ms from Secaucus, US
120.24.162.168	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	1.59ms from Shenzhen, CN
60.26.170.8	AS4837 CHINA UNICOM China169 Backbone	5.83ms from Beijing, CN
73.209.104.8	AS7922 Comcast Cable Communications, LLC	3.66ms from Chicago, US
52.222.141.104	AS16509 Amazon.com, Inc.	0.31ms from Frankfurt am Main, DE
88.234.39.8	AS9121 Turk Telekomunikasyon Anonim Sirketi	11.04ms from Istanbul, TR
47.152.155.120	AS5650 Frontier Communications of America, Inc.	6.49ms 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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