202.205.117.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.205.112.0/20
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 202.205.117.0/24

Range	ASN	Company	Num of IPs
202.205.112.0/20	AS4538	China Education and Research Network	4,096
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
202.205.149.0/24	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
202.205.148.0/24	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
68.59.137.104	AS7922 Comcast Cable Communications, LLC	14.68ms from Atlanta, US
3.16.126.8	AS16509 Amazon.com, Inc.	0.15ms from Columbus, US
37.98.128.200	AS57732 Ikaalisten-Parkanon Puhelin Osakeyhtio Ltd	4.31ms from Helsinki, FI
18.162.178.200	AS16509 Amazon.com, Inc.	0.12ms from Hong Kong, HK
188.235.214.136	AS50544 JSC "ER-Telecom Holding"	0.73ms from Krasnoyarsk, RU
51.190.10.72	AS5607 Sky UK Limited	6.49ms from London, GB
91.122.1.184	AS12389 PJSC Rostelecom	1.18ms from Saint Petersburg, RU
1.0.254.248	AS23969 TOT Public Company Limited	12.51ms from Bangkok, TH
34.31.177.216	AS396982 Google LLC	0.13ms from Council Bluffs, US
64.185.25.104	AS13693 Vexus Fiber	4.31ms from Dallas, US
72.109.115.72	AS6167 Verizon Business	8.72ms from Los Angeles, US
97.75.223.248	AS21723 GOCO TECHNOLOGY LIMITED PARTNERSHIP	17.54ms from Vancouver, CA
51.241.40.56	AS5607 Sky UK Limited	4.92ms from London, GB
79.35.33.216	AS3269 Telecom Italia S.p.A.	15.77ms from Milan, IT
125.56.119.8	AS7679 QTnet,Inc.	9.39ms from Osaka, JP
51.20.53.184	AS16509 Amazon.com, Inc.	1.05ms from Stockholm, SE
144.136.1.232	AS1221 Telstra Limited	9.30ms from Sydney, AU
101.206.51.200	AS4837 CHINA UNICOM China169 Backbone	8.56ms from Chengdu, CN
47.104.68.184	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	0.11ms from Qingdao, CN
70.45.32.56	AS14638 Liberty Communications of Puerto Rico LLC	0.88ms from San Juan, PR
191.205.153.184	AS26599 TELEFÔNICA BRASIL S.A	8.01ms from Sao Paulo, BR
162.201.159.56	AS7018 AT&T Enterprises, LLC	7.23ms from Chicago, US
75.188.41.24	AS10796 Charter Communications Inc	9.00ms from Columbus, US
3.145.70.200	AS16509 Amazon.com, Inc.	0.12ms from Columbus, US
34.43.35.136	AS396982 Google LLC	0.08ms from Melbourne, 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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