202.205.80.0/20

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 202.205.80.0/20

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

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
202.205.16.0/20	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 are 7 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
202.205.82.61	atfem.cn	3

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
202.205.87.33	AS4538 China Education and Research Network Center	4.42ms from Beijing, CN
202.205.91.181	AS4538 China Education and Research Network Center	4.07ms from Beijing, CN
202.205.92.212	AS4538 China Education and Research Network Center	3.13ms from Tianjin, CN
202.205.80.178	AS4538 China Education and Research Network Center	4.17ms from Beijing, CN
202.205.93.230	AS4538 China Education and Research Network Center	3.71ms from Beijing, CN
202.205.85.174	AS4538 China Education and Research Network Center	4.37ms from Beijing, CN
202.205.86.43	AS4538 China Education and Research Network Center	4.39ms 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
86.88.254.244	AS1136 KPN B.V.	2.47ms from Amsterdam, NL
156.196.86.244	AS8452 TE-AS	4.59ms from Cairo, EG
52.184.35.196	AS8075 Microsoft Corporation	0.54ms from Hong Kong, HK
86.134.2.100	AS2856 British Telecommunications PLC	2.21ms from London, GB
121.109.142.100	AS2516 KDDI CORPORATION	4.08ms from Tokyo, JP
185.151.164.132	AS205959 Convotis Schweiz AG	0.23ms from Zuerich, CH
132.232.24.4	AS45090 Shenzhen Tencent Computer Systems Company Limited	3.84ms from Chengdu, CN
13.245.245.164	AS16509 Amazon.com, Inc.	0.10ms from Cape Town, ZA
14.183.73.212	AS45899 VNPT Corp	3.83ms from Ho Chi Minh City, VN
115.79.100.228	AS7552 Viettel Group	1.30ms from Ho Chi Minh City, VN
180.200.105.52	AS17529 STARCAT CABLE NETWORK Co .,LTD.	4.58ms from Osaka, JP
222.98.72.100	AS4766 Korea Telecom	1.22ms from Seoul, KR
133.238.178.148	AS2497 Internet Initiative Japan Inc.	6.60ms from Tokyo, JP
65.24.121.132	AS10796 Charter Communications Inc	8.21ms from Columbus, US
103.181.69.84	AS137967 Digicon Telecommunication Ltd	0.47ms from Dhaka, BD
154.215.5.228	AS137951 ASLINE LIMITED	0.63ms from Hong Kong, HK
90.52.61.84	AS3215 Orange S.A.	8.54ms from Marseille, FR
139.14.205.4	AS2857 Johannes Gutenberg-Universitaet Mainz	2.50ms from Frankfurt am Main, DE
188.95.1.228	AS28918 Manage Now GmbH	4.70ms from Frankfurt am Main, DE
94.49.208.196	AS25019 Saudi Telecom Company JSC	5.95ms from Jeddah, SA
188.12.195.52	AS3269 Telecom Italia S.p.A.	4.37ms from Milan, IT
1.225.39.212	AS9318 SK Broadband Co Ltd	1.25ms from Seoul, KR
120.24.55.148	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	1.58ms from Shenzhen, CN
52.193.231.196	AS16509 Amazon.com, Inc.	0.15ms from Tokyo, JP
126.39.69.228	AS17676 SoftBank Corp.	11.13ms from Tokyo, JP

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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