202.197.240.0/21

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 202.196.0.0/15
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        202.192.0.0 - 202.199.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          SY Region
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
remarks:        hostmaster@apnic.net 960130
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2021-10-30T08:29:34Z
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
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 202.197.240.0/21

Range ASN Company Num of IPs
202.196.0.0/15 AS4538 China Education and Research Network 131,072
202.192.0.0/13 AS4538 China Education and Research Network 524,288
202.192.0.0/12 AS4538 China Education and Research Network 1,048,576

BGP prefixes that are contained by 202.197.240.0/21

Range ASN Company Num of IPs
202.197.240.0/24 AS4538 China Education and Research Network 256

Nearby Ranges

BGP prefixes that overlap with 202.197.0.0/16

Range ASN Company Num of IPs
202.192.0.0/12 AS4538 China Education and Research Network 1,048,576
202.192.0.0/13 AS4538 China Education and Research Network 524,288
202.196.0.0/15 AS4538 China Education and Research Network 131,072
202.197.176.0/20 AS4538 China Education and Research Network 4,096
202.197.0.0/20 AS4538 China Education and Research Network 4,096
202.197.64.0/20 AS4538 China Education and Research Network 4,096
202.197.48.0/20 AS4538 China Education and Research Network 4,096
202.197.224.0/20 AS4538 China Education and Research Network 4,096
202.197.192.0/20 AS4538 China Education and Research Network 4,096
202.197.208.0/20 AS4538 China Education and Research Network 4,096
202.197.144.0/20 AS4538 China Education and Research Network 4,096
202.197.32.0/20 AS4538 China Education and Research Network 4,096
202.197.112.0/20 AS4538 China Education and Research Network 4,096
202.197.80.0/20 AS4538 China Education and Research Network 4,096
202.197.96.0/20 AS4538 China Education and Research Network 4,096
202.197.16.0/21 AS4538 China Education and Research Network 2,048
202.197.24.0/21 AS4538 China Education and Research Network 2,048
202.197.159.0/24 AS4538 China Education and Research Network 256
202.197.2.0/24 AS4538 China Education and Research Network 256
202.197.0.0/24 AS4538 China Education and Research Network 256
202.197.96.0/24 AS4538 China Education and Research Network 256
202.197.124.0/24 AS4538 China Education and Research Network 256
202.197.111.0/24 AS4538 China Education and Research Network 256
202.197.240.0/24 AS4538 China Education and Research Network 256
202.197.193.0/24 AS4538 China Education and Research Network 256
202.197.112.0/24 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

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

IP Address ASN Details
202.197.240.140 AS4538 China Education and Research Network Center 8.37ms from Wuhan, 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
135.236.74.85 AS8075 Microsoft Corporation 0.24ms from Amsterdam, NL
104.178.132.21 AS7018 AT&T Enterprises, LLC 7.51ms from Atlanta, US
41.46.153.5 AS8452 TE-AS 3.15ms from Cairo, EG
89.233.29.149 AS3308 Telia Company AB 0.99ms from Copenhagen, DK
47.97.52.229 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 4.29ms from Hangzhou, CN
31.186.63.165 AS39045 Gazprom telecom LLC 0.96ms from Saint Petersburg, RU
222.136.175.37 AS4837 CHINA UNICOM China169 Backbone 4.99ms from Zhengzhou, CN
79.244.151.181 AS3320 Deutsche Telekom AG 2.06ms from Berlin, DE
50.87.223.165 AS46606 Unified Layer 1.91ms from Draper, US
35.157.148.85 AS16509 Amazon.com, Inc. 0.13ms from Frankfurt am Main, DE
139.199.19.133 AS45090 Shenzhen Tencent Computer Systems Company Limited 2.00ms from Guangzhou, CN
194.70.86.245 AS1273 Vodafone Group PLC 0.47ms from London, GB
177.23.137.53 AS52699 ITANET CONECTA LTDA 0.86ms from Rio de Janeiro, BR
120.209.182.149 AS9808 China Mobile Communications Group Co., Ltd. 7.98ms from Suzhou, CN
114.181.58.197 AS4713 NTT Communications Corporation 5.81ms from Tokyo, JP
85.255.96.69 AS24645 CSC Telecom, UAB 0.46ms from Vilnius, LT
107.134.217.197 AS7018 AT&T Enterprises, LLC 4.40ms from Fremont, US
80.22.2.101 AS3269 Telecom Italia S.p.A. 0.87ms from Milan, IT
116.75.185.69 AS17488 Hathway IP Over Cable Internet 9.81ms from Mumbai, IN
60.167.164.229 AS140527 China Telecom 6.54ms from Nanchang, CN
210.183.82.245 AS4766 Korea Telecom 5.12ms from Seoul, KR
14.76.226.69 AS4766 Korea Telecom 7.40ms from Seoul, KR
61.231.198.5 AS3462 Data Communication Business Group 3.72ms from Taipei, TW
175.161.99.245 AS4837 CHINA UNICOM China169 Backbone 8.00ms from Liaoyang, CN
31.28.199.37 AS12389 PJSC Rostelecom 16.78ms from Moscow, RU

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