202.203.32.0/20

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 202.203.0.0/16
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 202.203.32.0/20

Range ASN Company Num of IPs
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
202.203.192.0/20 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
202.203.144.0/24 AS4538 China Education and Research Network 256
202.203.16.0/24 AS4538 China Education and Research Network 256

Hosted domains

There are no domains currently hosted on this ASN.

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

Pingable IPs

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

IP Address ASN Details
202.203.40.227 AS4538 China Education and Research Network Center 18.60ms from Chengdu, 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
23.133.28.228 AS2914 NTT America, Inc. 0.20ms from Ashburn, US
52.61.26.68 AS8987 Amazon Data Services Ireland Ltd 0.34ms from Boardman, US
14.141.31.116 AS4755 TATA Communications formerly VSNL is Leading ISP 1.64ms from Delhi, IN
106.53.239.164 AS45090 Shenzhen Tencent Computer Systems Company Limited 2.03ms from Guangzhou, CN
182.152.253.100 AS17924 SmarTone Mobile Communications Ltd 12.09ms from Hong Kong, HK
90.65.196.196 AS3215 Orange S.A. 5.68ms from Marseille, FR
1.81.171.244 AS4134 CHINANET-BACKBONE 7.19ms from Xi'an, CN
104.182.201.180 AS7018 AT&T Enterprises, LLC 3.41ms from Atlanta, US
81.169.154.148 AS6724 Strato GmbH 0.55ms from Berlin, DE
181.234.70.212 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 18.76ms from Bogota, CO
5.103.169.100 AS44869 FIBIA P/S 5.82ms from Copenhagen, DK
37.78.237.180 AS12389 PJSC Rostelecom 1.15ms from Krasnodar, RU
23.60.5.244 AS16625 Akamai Technologies, Inc. 0.91ms from New York City, US
188.239.38.212 AS136907 HUAWEI CLOUDS 1.00ms from Singapore, SG
197.116.218.116 AS36947 Telecom Algeria 17.51ms from Valencia, ES
57.133.8.4 AS8220 COLT Technology Services Group Limited 0.47ms from Madrid, ES
88.121.57.196 AS12322 Free SAS 2.50ms from Paris, FR
58.221.69.4 AS4134 CHINANET-BACKBONE 5.30ms from Shanghai, CN
153.195.140.244 AS4713 NTT Communications Corporation 3.55ms from Tokyo, JP
117.254.231.100 AS9829 National Internet Backbone 3.50ms from Mumbai, IN
1.13.79.244 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.19ms from Nanjing, CN
151.0.117.84 AS21334 One Hungary Ltd. 13.43ms from Budapest, HU
97.98.223.84 AS11427 Charter Communications Inc 4.37ms from Dallas, US
34.34.219.20 AS396982 Google LLC 0.09ms from Jakarta, ID
89.145.213.180 AS5413 Wavenet Limited 3.46ms from London, GB

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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