202.127.237.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.127.232.0/21
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        202.127.224.0 - 202.127.239.255
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
remarks:        old HIT-CN returned on 19951110
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:28Z
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 202.127.237.0/24

Range	ASN	Company	Num of IPs
202.127.232.0/21	AS4538	China Education and Research Network	2,048
202.127.224.0/19	AS4538	China Education and Research Network	8,192

Nearby Ranges

BGP prefixes that overlap with 202.127.0.0/16

Range	ASN	Company	Num of IPs
202.127.224.0/19	AS4538	China Education and Research Network	8,192
202.127.80.0/20	AS24255	Tannan Cable Television Corporation	4,096
202.127.16.0/20	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	4,096
202.127.144.0/20	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	4,096
202.127.240.0/20	AS4538	China Education and Research Network	4,096
202.127.176.0/20	AS24259	kanuma cable television Corporation	4,096
202.127.96.0/20	AS17910	PT. Tigatra Infokom	4,096
202.127.232.0/21	AS4538	China Education and Research Network	2,048
202.127.32.0/21	AS46030	PT Wahan Inovasi Nusantara	2,048
202.127.200.0/21	AS7497	The Hefei Branch of Chinese Academy of Sciences	2,048
202.127.216.0/21	AS4538	China Education and Research Network	2,048
202.127.40.0/21	AS4808	Information Center, Ministry of Agriculture and Rural Affairs, PRC	2,048
202.127.168.0/21	AS24396	Bank Of China(Hong Kong) Limited	2,048
202.127.0.0/21	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	2,048
202.127.36.0/22	AS46030	PT Wahan Inovasi Nusantara	1,024
202.127.12.0/22	AS9929	Nanjing Institute of Science and Technology Information	1,024
202.127.32.0/22	AS46030	PT Wahan Inovasi Nusantara	1,024
202.127.36.0/23	AS46030	PT Wahan Inovasi Nusantara	512
202.127.48.0/23	AS4808	National Information Center of GACC (National E-Clearance Center of GACC)	512
202.127.34.0/23	AS46030	PT Wahan Inovasi Nusantara	512
202.127.70.0/23	AS4637	Telstra Global Internet Services Network Blocks	512
202.127.30.0/23	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	512
202.127.32.0/23	AS46030	PT Wahan Inovasi Nusantara	512
202.127.38.0/23	AS46030	PT Comradindo Lintasnusa Perkasa	512
202.127.16.0/23	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	512
202.127.144.0/23	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	512
202.127.173.0/24	AS24396	Bank Of China(Hong Kong) Limited	256
202.127.239.0/24	AS4538	China Education and Research Network	256
202.127.10.0/24	AS140220	Sky Broadband	256
202.127.104.0/24	AS17910	Aperto Permata - Niaga Tower	256
202.127.232.0/24	AS4538	China Education and Research Network	256
202.127.99.0/24	AS17910	3GNet Network Operation Center	256
202.127.169.0/24	AS24396	Bank Of China(Hong Kong) Limited	256
202.127.96.0/24	AS17910	3Gate Router and Servers	256
202.127.74.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.97.0/24	AS17910	3Gate Co-Lococation	256
202.127.79.0/24	AS4637	Telstra Global Internet Services Network Blocks	256
202.127.106.0/24	AS17910	Infrastructure for Serial Customer	256
202.127.153.0/24	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	256
202.127.0.0/24	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	256
202.127.170.0/24	AS24396	Bank Of China(Hong Kong) Limited	256
202.127.100.0/24	AS17910	Allocation for 3GNet Platinum Customer	256
202.127.236.0/24	AS4538	China Education and Research Network	256
202.127.171.0/24	AS24396	Bank Of China(Hong Kong) Limited	256
202.127.233.0/24	AS4538	China Education and Research Network	256
202.127.73.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.2.0/24	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	256
202.127.109.0/24	AS17910	DOS NI ROHA	256
202.127.22.0/24	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	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
69.20.49.232	AS27357 Rackspace Hosting	0.45ms from Ashburn, US
71.241.214.104	AS13977 Consolidated Communications, Inc.	1.97ms from Boston, US
123.25.99.88	AS45899 VNPT Corp	0.67ms from Da Nang, VN
188.68.32.152	AS197540 netcup GmbH	3.38ms from Frankfurt am Main, DE
36.78.77.104	AS7713 PT Telekomunikasi Indonesia	4.27ms from Jakarta, ID
206.116.166.232	AS852 TELUS Communications Inc.	3.95ms from Seattle, US
121.229.41.24	AS4134 CHINANET-BACKBONE	5.23ms from Shanghai, CN
36.67.198.24	AS7713 PT Telekomunikasi Indonesia	10.70ms from Surabaya, ID
98.193.217.232	AS7922 Comcast Cable Communications, LLC	10.82ms from Atlanta, US
93.231.240.56	AS3320 Deutsche Telekom AG	10.96ms from Frankfurt am Main, DE
185.86.1.88	AS49223 EVEREST TV AND RADIO COMPANY LLC	3.04ms from Kyiv, UA
164.41.82.8	AS21506 Fundação Universidade de Brasília	0.57ms from Brasilia, BR
63.100.51.136	AS14313 zColo	1.39ms from Dallas, US
154.219.225.152	AS202656 XServerCloud	0.19ms from Frankfurt am Main, DE
82.61.85.232	AS3269 Telecom Italia S.p.A.	12.50ms from Milan, IT
146.103.68.248	AS54994 Meteverse Limited.	0.94ms from Seoul, KR
180.80.193.232	AS9316 DACOM-PUBNETPLUS	2.28ms from Seoul, KR
182.165.174.104	AS17511 OPTAGE Inc.	2.02ms from Osaka, JP
191.202.19.8	AS26599 TELEFÔNICA BRASIL S.A	15.81ms from Sao Paulo, BR
111.255.151.88	AS3462 Data Communication Business Group	4.50ms from Taichung, TW
46.248.181.200	AS47544 IQ PL Sp. z o.o.	0.98ms from Gdynia, PL
111.193.203.8	AS4808 China Unicom Beijing Province Network	3.34ms from Beijing, CN
70.93.200.232	AS20001 Charter Communications Inc	5.54ms from Los Angeles, US
137.49.84.40	AS393337 The University of Hartford	6.78ms from New York City, US
14.52.48.216	AS4766 Korea Telecom	1.22ms from Seoul, KR

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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