202.127.216.0/21

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        202.127.216.0 - 202.127.223.255
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 NJTU-CN returned on 19951109
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:18Z
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

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
202.127.40.0/21	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
202.127.237.0/24	AS4538	China Education and Research Network	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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Pingable IPs

35 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
202.127.216.241	AS4538 China Education and Research Network Center	1.71ms from Wuhan, CN
202.127.217.85	AS4538 China Education and Research Network Center	2.20ms from Shenzhen, CN

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
23.200.50.53	AS16625 Akamai Technologies, Inc.	7.12ms from Bengaluru, IN
27.14.170.165	AS4837 CHINA UNICOM China169 Backbone	8.38ms from Chongqing, CN
136.50.108.197	AS16591 Google Fiber Inc.	7.22ms from Dallas, US
217.182.10.37	AS16276 OVH SAS	0.09ms from Gravelines, FR
116.96.29.85	AS7552 Viettel Group	2.08ms from Hanoi, VN
34.94.118.85	AS396982 Google LLC	0.10ms from Los Angeles, US
216.70.38.117	AS12042 Consolidated Communications, Inc.	5.13ms from Minneapolis, US
73.231.236.21	AS7922 Comcast Cable Communications, LLC	6.83ms from San Jose, US
20.226.41.69	AS8075 Microsoft Corporation	0.18ms from Sao Paulo, BR
67.50.178.181	AS7385 Allstream Business US, LLC	15.45ms from Seattle, US
49.75.106.101	AS140292 CHINATELECOM Jiangsu province Suzhou 5G network	6.29ms from Shanghai, CN
36.230.206.229	AS3462 Data Communication Business Group	1.16ms from Taipei, TW
50.112.20.69	AS16509 Amazon.com, Inc.	0.15ms from Boardman, US
3.148.97.213	AS16509 Amazon.com, Inc.	0.16ms from Columbus, US
188.76.112.5	AS12479 Orange Espagne SA	1.71ms from Madrid, ES
34.90.165.197	AS396982 Google LLC	0.13ms from Oudeschip, NL
189.224.164.149	AS8151 UNINET	10.62ms from Santiago de Queretaro, MX
61.69.15.21	AS2764 AAPT Limited	0.32ms from Sydney, AU
108.18.144.181	AS701 Verizon Business	2.19ms from Ashburn, US
38.15.34.69	AS397142 City of Fort Collins	1.93ms from Denver, US
52.51.228.85	AS16509 Amazon.com, Inc.	0.16ms from Dublin, IE
193.35.154.149	AS212219 HOSTING DUNYAM	0.22ms from Istanbul, TR
217.146.7.101	AS42473 ANEXIA Internetdienstleistungs GmbH	6.86ms from Istanbul, TR
73.85.190.53	AS7922 Comcast Cable Communications, LLC	7.08ms from Miami, US
195.42.181.53	AS8515 CJSC "DataForce IP"	0.66ms from Moscow, RU

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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