202.203.80.0/21

AS4538  ·  China Education and Research Network Center

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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 202.203.80.0/21

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
202.203.32.0/20 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
202.203.128.0/23 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

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

IP Address ASN Details
202.203.84.254 AS4538 China Education and Research Network Center 30.23ms 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
38.18.31.149 AS174 Cogent Communications 0.76ms from Los Angeles, US
67.49.28.37 AS20001 Charter Communications Inc 10.62ms from Los Angeles, US
209.212.39.181 AS20283 CONSOLIDATED TELEPHONE COMPANY 5.21ms from Minneapolis, US
213.245.111.197 AS15557 Societe Francaise Du Radiotelephone - SFR SA 6.50ms from Paris, FR
61.26.225.229 AS9824 JCOM Co., Ltd. 13.28ms from Tokyo, JP
79.200.174.133 AS3320 Deutsche Telekom AG 3.57ms from Duesseldorf, DE
78.4.105.69 AS8968 BT Italia S.p.A. 0.94ms from Milan, IT
34.148.145.149 AS396982 Google LLC 0.14ms from Moncks Corner, US
178.208.23.117 AS50628 Leonix Telecom 0.29ms from Paris, FR
86.88.55.117 AS1136 KPN B.V. 1.09ms from Amsterdam, NL
216.37.72.21 AS21922 WorldSpice Technologies 11.72ms from Atlanta, US
130.195.212.69 AS9009 M247 Europe SRL 0.20ms from Atlanta, US
223.108.214.101 AS56046 China Mobile communications corporation 5.27ms from Nanjing, CN
67.251.73.245 AS11351 Charter Communications Inc 14.24ms from Piscataway, US
15.204.56.21 AS16276 OVH SAS 0.44ms from Portland, US
35.76.150.245 AS16509 Amazon.com, Inc. 0.14ms from Tokyo, JP
126.121.245.149 AS17676 SoftBank Corp. 5.41ms from Tokyo, JP
89.119.238.5 AS8968 BT Italia S.p.A. 4.92ms from Arezzo, IT
54.192.192.213 AS16509 Amazon.com, Inc. 0.28ms from Ashburn, US
188.176.160.37 AS3292 TDC Holding A/S 3.02ms from Copenhagen, DK
195.191.68.37 AS50407 Douglas Group Technology GmbH & Co. KG 0.12ms from Duesseldorf, DE
85.195.152.149 AS25019 Saudi Telecom Company JSC 2.94ms from Jeddah, SA
145.239.205.37 AS16276 OVH SAS 0.17ms from London, GB
31.50.83.197 AS2856 British Telecommunications PLC 8.09ms from London, GB
71.87.31.37 AS20115 Charter Communications LLC 8.31ms from Milwaukee, 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs