202.203.144.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.203.144.0/20
Registry	APNIC
ID	CDR-CERNET

WHOIS Details

inetnum:        202.202.0.0 - 202.203.255.255
netname:        CDR-CERNET
descr:          China Education and Research Network
descr:          Chengdu Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ASSIGNED NON-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:  2021-03-24T13:05:10Z
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 202.203.144.0/24

Range	ASN	Company	Num of IPs
202.203.144.0/20	AS4538	China Education and Research Network	4,096
202.203.0.0/16	AS4538	China Education and Research Network	65,536
202.203.0.0/16	AS138378	China Education and Research Network	65,536
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 202.203.0.0/16

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
202.203.0.0/16	AS138378	China Education and Research Network	65,536
202.203.0.0/16	AS4538	China Education and Research Network	65,536
202.203.224.0/20	AS4538	China Education and Research Network	4,096
202.203.176.0/20	AS4538	China Education and Research Network	4,096
202.203.208.0/20	AS4538	China Education and Research Network	4,096
202.203.144.0/20	AS4538	China Education and Research Network	4,096
202.203.64.0/20	AS4538	China Education and Research Network	4,096
202.203.48.0/20	AS4538	China Education and Research Network	4,096
202.203.160.0/20	AS4538	China Education and Research Network	4,096
202.203.240.0/20	AS4538	China Education and Research Network	4,096
202.203.32.0/20	AS4538	China Education and Research Network	4,096
202.203.192.0/20	AS4538	China Education and Research Network	4,096
202.203.136.0/21	AS4538	China Education and Research Network	2,048
202.203.80.0/21	AS4538	China Education and Research Network	2,048
202.203.128.0/23	AS4538	China Education and Research Network	512
202.203.176.0/24	AS4538	China Education and Research Network	256
202.203.2.0/24	AS4538	China Education and Research Network	256
202.203.66.0/24	AS4538	China Education and Research Network	256
202.203.187.0/24	AS4538	China Education and Research Network	256
202.203.112.0/24	AS4538	China Education and Research Network	256
202.203.160.0/24	AS4538	China Education and Research Network	256
202.203.132.0/24	AS4538	China Education and Research Network	256
202.203.16.0/24	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

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

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
216.236.168.168	AS16863 Home Telephone Company, Inc.	8.79ms from Atlanta, US
101.73.21.8	AS4837 CHINA UNICOM China169 Backbone	7.91ms from Beijing, CN
188.25.208.72	AS8708 DIGI ROMANIA S.A.	0.69ms from Bucharest, RO
112.166.43.152	AS4766 Korea Telecom	4.25ms from Seoul, KR
84.197.123.104	AS6848 Telenet BV	7.29ms from Brussels, BE
35.203.46.184	AS396982 Google LLC	0.10ms from Montreal, CA
109.161.119.24	AS12389 PJSC Rostelecom	10.60ms from Moscow, RU
213.33.189.248	AS3216 PJSC "Vimpelcom"	0.63ms from Moscow, RU
118.140.163.72	AS9304 HGC Global Communications Limited	1.47ms from Hong Kong, HK
188.39.218.8	AS8468 ENTANET International Limited	0.76ms from London, GB
173.186.157.72	AS7029 Windstream Communications LLC	2.10ms from Miami, US
79.219.101.24	AS3320 Deutsche Telekom AG	2.95ms from Frankfurt am Main, DE
160.124.223.216	AS132839 POWER LINE DATACENTER	1.48ms from Hong Kong, HK
3.89.171.200	AS14618 Amazon.com, Inc.	0.20ms from Reston, US
32.211.153.152	AS46690 Southern New England Telephone Company and SNET America, Inc.	9.83ms from Secaucus, US
188.148.87.120	AS1257 Tele2 Sverige AB	10.19ms from Falkenberg, SE
31.54.139.104	AS2856 British Telecommunications PLC	6.30ms from London, GB
47.137.81.8	AS5650 Frontier Communications of America, Inc.	10.41ms from Los Angeles, US
77.83.246.232	AS215540 GLOBAL CONNECTIVITY SOLUTIONS LLP	0.30ms from Warsaw, PL
36.156.58.88	AS56046 China Mobile communications corporation	2.61ms from Nanjing, CN
216.232.137.248	AS852 TELUS Communications Inc.	12.18ms from Seattle, US
106.75.227.120	AS4812 China Telecom (Group)	3.27ms from Shanghai, CN
114.116.170.8	AS23724 IDC, China Telecommunications Corporation	4.99ms from Beijing, CN
114.246.171.72	AS4808 China Unicom Beijing Province Network	3.23ms from Beijing, CN
133.3.242.40	AS2504 Kyoto University	1.46ms from Osaka, 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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