202.205.68.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.205.64.0/20
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 202.205.68.0/24

Range	ASN	Company	Num of IPs
202.205.64.0/20	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
202.205.117.0/24	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
202.205.148.0/24	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

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
34.217.247.56	AS16509 Amazon.com, Inc.	0.16ms from Boardman, US
97.71.27.24	AS33363 Charter Communications, Inc	8.56ms from Chicago, US
50.44.99.216	AS5650 Frontier Communications of America, Inc.	8.39ms from Chicago, US
24.208.137.200	AS10796 Charter Communications Inc	8.30ms from Columbus, US
92.194.164.104	AS20676 Plusnet GmbH	11.07ms from Frankfurt am Main, DE
76.142.60.56	AS7922 Comcast Cable Communications, LLC	6.53ms from Houston, US
95.37.154.168	AS12389 PJSC Rostelecom	6.19ms from Kazan, RU
86.137.198.248	AS2856 British Telecommunications PLC	2.28ms from London, GB
84.93.113.24	AS6871 Plusnet	10.57ms from London, GB
76.159.200.104	AS7922 Comcast Cable Communications, LLC	14.86ms from Los Angeles, US
80.30.25.184	AS3352 TELEFONICA DE ESPANA S.A.U.	10.69ms from Madrid, ES
220.110.52.152	AS4713 NTT Communications Corporation	5.52ms from Osaka, JP
70.163.126.200	AS22773 Cox Communications Inc.	1.69ms from Phoenix, US
52.203.42.152	AS14618 Amazon.com, Inc.	0.22ms from Reston, US
161.117.40.216	AS45102 Alibaba (US) Technology Co., Ltd.	0.87ms from Singapore, SG
220.233.48.248	AS10143 Exetel Pty Ltd	13.55ms from Sydney, AU
125.206.224.184	AS4713 NTT Communications Corporation	7.54ms from Tokyo, JP
70.30.73.56	AS577 Bell Canada	8.25ms from Toronto, CA
77.165.42.120	AS1136 KPN B.V.	1.72ms from Amsterdam, NL
52.188.249.200	AS8075 Microsoft Corporation	0.37ms from Ashburn, US
171.103.100.200	AS7470 TRUE INTERNET Co.,Ltd.	2.39ms from Bangkok, TH
52.142.150.200	AS8075 Microsoft Corporation	0.21ms from Cardiff, GB
91.0.130.8	AS3320 Deutsche Telekom AG	10.90ms from Frankfurt am Main, DE
91.97.141.200	AS9145 EWE TEL GmbH	5.22ms from Hamburg, DE
23.235.168.8	AS138415 Yancy Limited	1.11ms from Hong Kong, HK

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.

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