211.66.0.0/16

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        211.64.0.0 - 211.69.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Room 224, Tsinghua University
descr:          Beijing, China
country:        CN
admin-c:        JW725-AP
tech-c:         XL364-AP
tech-c:         LZ530-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-10-20T00:56:04Z
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 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-11-18T00:26:28Z
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 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
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:        JW725-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:23:32Z
source:         APNIC

person:         Ling Zhang
address:        Network Center
address:        South China University of Technology
address:        Guangzhou, Guangdong 510641, China
address:        CN
country:        CN
phone:          +86-20-87110596
fax-no:         +86-20-87110019
e-mail:         ling@scut.edu.cn
nic-hdl:        LZ530-AP
notify:         dbmon@apnic.net
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:23:32Z
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:        XL364-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:23:32Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 211.0.0.0/8

Range ASN Company Num of IPs
211.216.0.0/13 AS9318 Korea Telecom 524,288
211.216.0.0/13 AS4961 Korea Telecom 524,288
211.216.0.0/13 AS17859 Korea Telecom 524,288
211.136.0.0/13 AS56046 China Mobile Communications Corporation 524,288
211.216.0.0/13 AS152214 Korea Telecom 524,288
211.136.0.0/13 AS9808 China Mobile Communications Corporation 524,288
211.216.0.0/13 AS4766 Korea Telecom 524,288
211.216.0.0/13 AS38089 Korea Telecom 524,288
211.28.0.0/14 AS4804 OPTUS INTERNET - RETAIL 262,144
211.212.0.0/14 AS9318 SK Broadband Co Ltd 262,144
211.208.0.0/14 AS9318 SK Broadband Co Ltd 262,144
211.59.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.146.0.0/16 AS4847 China Network Information Center 65,536
211.53.0.0/16 AS18294 LG DACOM Corporation 65,536
211.171.0.0/16 AS3786 DACOM Corp. 65,536
211.134.0.0/16 AS2516 KDDI CORPORATION 65,536
211.108.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.126.0.0/16 AS2516 KDDI CORPORATION 65,536
211.32.0.0/16 AS9699 LG DACOM Corporation 65,536
211.243.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.183.0.0/16 AS17878 DREAMLINE CO. 65,536
211.244.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.58.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.171.0.0/16 AS9641 DACOM Corp. 65,536
211.151.0.0/16 AS9802 21ViaNet(China),Inc. 65,536
211.117.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.48.0.0/16 AS17615 Korea Telecom 65,536
211.158.0.0/16 AS4837 CHONGQING CNC BROADBAND NETWORKS CO.,LTD 65,536
211.109.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.186.0.0/16 AS9318 SK Broadband Co Ltd 65,536
211.170.0.0/16 AS3786 DACOM Corp. 65,536
211.169.0.0/16 AS3786 DACOM Corp. 65,536
211.40.0.0/16 AS3786 LG DACOM Corporation 65,536
211.50.0.0/16 AS3786 LG DACOM Corporation 65,536
211.32.0.0/16 AS3786 LG DACOM Corporation 65,536
211.5.0.0/16 AS2516 KDDI CORPORATION 65,536
211.60.0.0/16 AS3786 LG DACOM Corporation 65,536
211.51.0.0/16 AS38427 Korea Telecom 65,536
211.151.0.0/16 AS23724 21ViaNet(China),Inc. 65,536
211.151.0.0/16 AS23724 21ViaNet(China),Inc. 65,536
211.53.0.0/16 AS3786 LG DACOM Corporation 65,536
211.183.0.0/16 AS17875 DREAMLINE CO. 65,536
211.169.0.0/16 AS38661 DACOM Corp. 65,536
211.151.0.0/16 AS9802 21ViaNet(China),Inc. 65,536
211.18.0.0/16 AS2516 KDDI CORPORATION 65,536
211.53.0.0/16 AS23601 LG DACOM Corporation 65,536
211.0.0.0/16 AS4713 NTT DOCOMO BUSINESS,Inc. 65,536
211.151.0.0/16 AS9308 21ViaNet(China),Inc. 65,536
211.26.0.0/16 AS9443 Vocus Australia 65,536
211.169.0.0/16 AS9526 DACOM Corp. 65,536

Hosted domains

There are 11 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
211.66.64.110 gzmtu.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

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

IP Address ASN Details
211.66.241.8 AS4538 China Education and Research Network Center 2.19ms from Guangzhou, CN
211.66.184.100 AS4538 China Education and Research Network Center 1.63ms from Guangzhou, CN
211.66.152.3 AS4538 China Education and Research Network Center 3.33ms from Guangzhou, CN
211.66.170.53 AS4538 China Education and Research Network Center 1.16ms from Guangzhou, CN
211.66.210.229 AS4538 China Education and Research Network Center 2.31ms from Guangzhou, CN
211.66.248.250 AS4538 China Education and Research Network Center 2.67ms from Guangzhou, CN
211.66.199.94 AS4538 China Education and Research Network Center 1.65ms from Guangzhou, CN
211.66.75.7 AS4538 China Education and Research Network Center 2.73ms from Guangzhou, CN
211.66.74.101 AS4538 China Education and Research Network Center 2.23ms from Guangzhou, CN
211.66.206.19 AS4538 China Education and Research Network Center 2.06ms from Guangzhou, CN
211.66.186.129 AS4538 China Education and Research Network Center 2.06ms from Guangzhou, CN
211.66.219.78 AS4538 China Education and Research Network Center 1.31ms from Guangzhou, CN
211.66.89.5 AS4538 China Education and Research Network Center 2.29ms from Guangzhou, CN
211.66.211.6 AS4538 China Education and Research Network Center 3.28ms from Guangzhou, CN
211.66.0.65 AS4538 China Education and Research Network Center 1.89ms from Guangzhou, CN
211.66.218.48 AS4538 China Education and Research Network Center 1.37ms from Guangzhou, CN
211.66.166.11 AS4538 China Education and Research Network Center 1.54ms from Guangzhou, CN
211.66.168.41 AS4538 China Education and Research Network Center 1.59ms from Guangzhou, CN
211.66.64.171 AS4538 China Education and Research Network Center 2.06ms from Guangzhou, CN
211.66.209.1 AS4538 China Education and Research Network Center 1.90ms from Guangzhou, CN
211.66.171.140 AS4538 China Education and Research Network Center 1.17ms from Guangzhou, 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
118.96.254.0 AS7713 PT Telekomunikasi Indonesia 9.84ms from Batam, ID
100.20.217.96 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
20.141.90.32 AS8070 Microsoft Corporation 0.57ms from Boydton, US
129.28.86.80 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.85ms from Chengdu, CN
178.201.81.48 AS3209 Vodafone GmbH 8.16ms from Duesseldorf, DE
223.16.157.32 AS9304 HGC Global Communications Limited 1.31ms from Hong Kong, HK
223.16.196.48 AS9304 HGC Global Communications Limited 1.26ms from Hong Kong, HK
36.63.114.240 AS4134 CHINANET-BACKBONE 7.44ms from Huai'an, CN
98.254.18.48 AS7922 Comcast Cable Communications, LLC 4.83ms from Miami, US
66.220.210.32 AS12042 Fidium 1.72ms from Minneapolis, US
209.26.23.0 AS209 CenturyLink Communications, LLC 0.61ms from Orlando, US
151.31.26.80 AS1267 WIND TRE S.P.A. 3.87ms from Rome, IT
172.215.142.224 AS8075 Microsoft Corporation 1.27ms from San Antonio, US
200.234.192.192 AS27715 Locaweb Serviços de Internet S/A 0.74ms from Sao Paulo, BR
49.166.60.48 AS17858 LG POWERCOMM 1.78ms from Seoul, KR
124.85.49.80 AS4713 NTT DOCOMO BUSINESS,Inc. 3.08ms from Tokyo, JP
52.174.232.80 AS8075 Microsoft Corporation 0.24ms from Amsterdam, NL
68.16.34.0 AS6389 AT&T Enterprises, LLC 14.94ms from Atlanta, US
44.229.88.192 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
66.97.213.192 AS207355 Ka-net 3.75ms from Copenhagen, DK
37.201.188.112 AS3209 Vodafone GmbH 10.11ms from Frankfurt am Main, DE
142.56.51.224 AS15108 Allo Communications LLC 4.22ms from Lincoln, US
71.95.37.240 AS20115 Charter Communications LLC 5.39ms from Los Angeles, US
79.157.112.80 AS3352 TELEFONICA DE ESPANA S.A.U. 8.45ms from Madrid, ES
107.206.216.144 AS7018 AT&T Enterprises, LLC 1.95ms from Miami, US

Traceroute

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

$
traceroute -a -n -q1 -f2 -m12 211.66.251.226
traceroute to 211.66.251.226 (211.66.251.226): 12 hops max, 52 byte packets
2 [AS29049] 94.20.241.9 1.134 ms
3 *
4 *
5 [] 69.194.166.153 242.014 ms
6 *
7 [] 203.22.177.246 241.716 ms
8 [] 203.144.99.18 262.287 ms
9 [AS4538] 101.4.114.181 291.014 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Baku, AZ
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.

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