211.84.240.0/20

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
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        211.84.0.0 - 211.85.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Wuhan Regional Network
country:        CN
admin-c:        JW1-CN
tech-c:         XL1-CN
tech-c:         SZ2-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-10-20T00:56:30Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Center,
address:        FIT-3-220, 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:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, 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 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
source:         APNIC

person:         Jianping Wu
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         jianping@cernet.edu.cn
nic-hdl:        JW1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

person:         Shuang Zhu
address:        China Education and Research Network Information Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-5931
fax-no:         +86-10-6278-5933
e-mail:         szhu@cernet.edu.cn
nic-hdl:        SZ2-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:36Z
source:         APNIC

person:         Xing Li
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         xing@cernet.edu.cn
nic-hdl:        XL1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 211.84.0.0/16

No nearby ranges found.

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
211.84.240.9 kfu.edu.cn 1

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

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

IP Address ASN Details
211.84.240.86 AS4538 China Education and Research Network Center 4.64ms from Zhengzhou, CN
211.84.244.96 AS4538 China Education and Research Network Center 4.99ms from Zhengzhou, CN
211.84.241.248 AS4538 China Education and Research Network Center 6.01ms from Zhengzhou, 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
86.95.49.20 AS1136 KPN B.V. 2.21ms from Amsterdam, NL
73.99.94.164 AS7922 Comcast Cable Communications, LLC 9.71ms from Ashburn, US
52.117.62.244 AS36351 IBM Cloud 1.11ms from Dallas, US
103.186.62.244 AS45701 Internet Madju Abad Millenindo, PT 0.61ms from Denpasar, ID
34.255.203.68 AS16509 Amazon.com, Inc. 0.18ms from Dublin, IE
219.151.11.4 AS4134 CHINANET-BACKBONE 1.12ms from Guiyang, CN
85.119.66.20 AS15924 Vodafone Net Iletisim Hizmetler AS 2.16ms from Istanbul, TR
90.218.206.36 AS5607 Sky UK Limited 2.90ms from London, GB
82.210.253.20 AS48951 Telekom Deutschland GmbH 7.55ms from Nuernberg, DE
220.110.49.36 AS4713 NTT DOCOMO BUSINESS,Inc. 4.99ms from Osaka, JP
180.220.165.20 AS9617 JCOM Co., Ltd. 12.85ms from Osaka, JP
17.60.172.196 AS714 Apple Inc. 6.84ms from Seattle, US
27.117.103.148 AS17857 SK Broadband Co Ltd 7.33ms from Seoul, KR
125.130.224.36 AS4766 Korea Telecom 1.26ms from Seoul, KR
175.206.218.36 AS4766 Korea Telecom 2.59ms from Seoul, KR
139.196.42.228 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.59ms from Shanghai, CN
36.229.123.52 AS3462 Data Communication Business Group 1.37ms from Taipei, TW
60.147.204.84 AS17676 SoftBank Corp. 2.91ms from Tokyo, JP
139.103.179.4 AS611 NB-PEI Educational Computer Network 13.44ms from Beauharnois, CA
120.4.121.20 AS4837 CHINA UNICOM China169 Backbone 5.83ms from Beijing, CN
2.204.255.4 AS3209 Vodafone GmbH 4.54ms from Berlin, DE
62.235.41.212 AS5432 Proximus NV 2.41ms from Brussels, BE
172.253.145.180 AS15169 Google LLC 2.01ms from Council Bluffs, US
51.183.31.20 AS5607 Sky UK Limited 1.17ms from Dublin, IE
94.134.191.36 AS8881 1&1 Versatel GmbH 0.96ms from Hamburg, DE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f4 -m23 211.84.248.128
traceroute to 211.84.248.128 (211.84.248.128): 23 hops max, 52 byte packets
4 [] 15.230.139.194 277.805 ms
5 *
6 *
7 *
8 *
9 [AS6453] 64.86.79.123 27.567 ms
10 [AS6453] 64.86.79.122 27.467 ms
11 *
12 [AS6453] 216.6.52.18 219.666 ms
13 *
14 *
15 *
16 *
17 [AS6453] 180.87.168.114 216.539 ms
18 [AS6453] 180.87.112.110 204.794 ms
19 [AS4538] 101.4.114.221 231.054 ms
20 [AS4538] 101.4.116.121 238.307 ms
21 *
22 *
23 *
Measurement taken from IPinfo ProbeNet in Kansas City, US
On

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