202.205.104.0/22

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 202.205.104.0/22

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

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
202.205.224.0/22	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 are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
202.205.107.11	AS4538 China Education and Research Network Center	3.42ms from Beijing, CN
202.205.105.147	AS4538 China Education and Research Network Center	21.45ms from Zhongwei, CN
202.205.104.141	AS4538 China Education and Research Network Center	4.03ms from Beijing, CN
202.205.106.248	AS4538 China Education and Research Network Center	4.28ms 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
51.8.104.230	AS8075 Microsoft Corporation	0.46ms from Ashburn, US
96.89.209.214	AS7922 Comcast Cable Communications, LLC	7.69ms from Boston, US
94.105.115.134	AS9031 EDPNET Belgium BV	1.44ms from Brussels, BE
197.44.15.182	AS8452 TE-AS	3.17ms from Cairo, EG
79.197.33.54	AS3320 Deutsche Telekom AG	8.87ms from Frankfurt am Main, DE
35.228.17.38	AS396982 Google LLC	0.14ms from Hamina, FI
107.221.209.86	AS7018 AT&T Enterprises, LLC	10.32ms from Houston, US
133.226.32.102	AS10003 Ogaki Cable Television Co.,Inc.	3.68ms from Osaka, JP
185.45.254.54	AS212976 XPO IT EUROPE SNC	1.11ms from Paris, FR
39.111.247.6	AS2527 Sony Network Communications Inc.	1.09ms from Tokyo, JP
180.36.238.54	AS4713 NTT Communications Corporation	8.05ms from Tokyo, JP
51.37.219.246	AS15502 Vodafone Ireland Limited	3.09ms from Dublin, IE
118.140.10.70	AS9304 HGC Global Communications Limited	1.48ms from Hong Kong, HK
203.200.223.22	AS4755 TATA Communications formerly VSNL is Leading ISP	0.81ms from Hyderabad, IN
4.234.136.54	AS8075 Microsoft Corporation	0.17ms from London, GB
24.118.10.166	AS7922 Comcast Cable Communications, LLC	3.74ms from Minneapolis, US
70.88.183.22	AS7922 Comcast Cable Communications, LLC	4.14ms from Atlanta, US
43.198.127.230	AS16509 Amazon.com, Inc.	0.10ms from Hong Kong, HK
63.222.217.6	AS3491 PCCW Global, Inc.	0.32ms from London, GB
38.105.14.86	AS174 Cogent Communications	0.39ms from Miami, US
104.189.165.150	AS7018 AT&T Enterprises, LLC	10.05ms from Miami, US
96.49.59.54	AS6327 Shaw Communications Inc.	7.68ms from Seattle, US
32.114.184.38	AS2687 AT&T Enterprises, LLC	1.49ms from Singapore, SG
73.160.104.6	AS7922 Comcast Cable Communications, LLC	8.35ms from Ashburn, US
172.171.200.150	AS8075 Microsoft Corporation	0.59ms from Ashburn, 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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