202.205.64.0/20

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 202.205.64.0/20

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

BGP prefixes that are contained by 202.205.64.0/20

Range	ASN	Company	Num of IPs
202.205.68.0/24	AS4538	China Education and Research Network	256

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
202.205.80.0/20	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
202.205.68.0/24	AS4538	China Education and Research Network	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
202.205.70.41	cupl.top	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
202.205.71.38	AS4538 China Education and Research Network Center	3.84ms from Beijing, CN
202.205.75.130	AS4538 China Education and Research Network Center	3.43ms from Beijing, CN
202.205.79.141	AS4538 China Education and Research Network Center	2.31ms from Beijing, CN
202.205.64.68	AS4538 China Education and Research Network Center	2.85ms from Beijing, 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
206.162.99.244	AS8047 GENERAL COMMUNICATION, INC.	6.86ms from Anchorage, US
73.82.71.20	AS7922 Comcast Cable Communications, LLC	5.09ms from Atlanta, US
166.78.192.100	AS19994 Rackspace Hosting	1.21ms from Chicago, US
27.153.144.212	AS4134 CHINANET-BACKBONE	2.92ms from Fuzhou, CN
109.154.77.116	AS2856 British Telecommunications PLC	2.44ms from London, GB
5.80.156.20	AS2856 British Telecommunications PLC	1.80ms from London, GB
47.146.123.20	AS5650 Frontier Communications of America, Inc.	3.43ms from Los Angeles, US
176.109.21.100	AS43434 CJSC Contact TV	8.94ms from Moscow, RU
70.185.37.164	AS22773 Cox Communications Inc.	2.05ms from Phoenix, US
46.254.3.68	AS8468 ENTANET International Limited	1.03ms from London, GB
64.188.141.228	AS26801 Zito Media, L.P.	17.80ms from New York City, US
88.126.220.52	AS12322 Free SAS	6.50ms from Paris, FR
73.35.228.20	AS7922 Comcast Cable Communications, LLC	2.68ms from Seattle, US
96.250.47.148	AS701 Verizon Business	3.15ms from Secaucus, US
112.139.82.228	AS10010 TOKAI Communications Corporation	2.62ms from Tokyo, JP
38.152.129.212	AS36352 HostPapa	0.23ms from Los Angeles, US
101.127.27.116	AS55430 Starhub Ltd	1.37ms from Singapore, SG
81.219.47.4	AS12741 Netia SA	0.59ms from Warsaw, PL
128.136.9.68	AS13649 Flexential Colorado Corp.	9.77ms from Ashburn, US
38.152.247.4	AS55286 B2 Net Solutions Inc.	0.19ms from Buffalo, US
157.133.116.20	AS14114 SAP America Inc.	2.31ms from Frankfurt am Main, DE
92.37.157.20	AS12389 PJSC Rostelecom	0.85ms from Khabarovsk, RU
81.189.70.196	AS8437 Hutchison Drei Austria GmbH	5.01ms from Vienna, AT
47.93.97.84	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	2.00ms from Beijing, CN
199.167.228.52	AS53715 VNC Enterprises, LLC	7.32ms from Buffalo, 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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