166.111.0.0/17

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain tsinghua.edu.cn
ASN AS4538
Parent Range 166.111.0.0/16
Registry APNIC
ID TSINGHUA-CN

WHOIS Details

inetnum:        166.111.0.0 - 166.111.255.255
netname:        TSINGHUA-CN
descr:          Tsinghua University
country:        CN
org:            ORG-CEAR1-AP
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-TSINGHUA-CERNET
mnt-routes:     MAINT-TSINGHUA-CERNET
mnt-irt:        IRT-CERNET-AP
last-modified:  2023-09-06T06:09:18Z
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

organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        FIT 3-220,
address:        Tsinghua University
phone:          +86-10-62785983
fax-no:         +86-10-62785933
e-mail:         hostmaster@cernic.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
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

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 166.111.0.0/17

Range ASN Company Num of IPs
166.111.0.0/16 AS4538 Tsinghua University 65,536

Nearby Ranges

BGP prefixes that overlap with 166.111.0.0/16

Range ASN Company Num of IPs
166.111.0.0/16 AS4538 Tsinghua University 65,536

Hosted domains

There are 56 domain names hosted across 42 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
166.111.77.32 tedhub.cn 2
166.111.96.189 ourwl.com 2
166.111.111.128 fineval.space 2
166.111.107.252 yinding.cn 2
166.111.86.30 thuse408.xin 1
166.111.61.120 gdp-lab.top 1
166.111.81.33 qrimalne.uk 1
166.111.32.226 zsxgroup.asia 1
166.111.98.101 liujingming.com 1
166.111.80.114 jingjuplus.cn 1
166.111.8.30 dns5.edu.cn 1
166.111.124.168 qhfz.cn 1
166.111.57.57 letstestthis.xyz 1
166.111.80.237 sense-lab.org 1
166.111.41.139 bestchina.org 1
166.111.5.215 mbacn.edu.cn 1
166.111.17.82 interact.cool 1
166.111.96.152 g20e.org 1
166.111.59.16 airlinedata.org 1
166.111.100.96 xn--jhqxa2d35c41a64moylppeh3bkvq404bdizavfd5tfi43l.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

2,054 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
166.111.58.72 AS4538 China Education and Research Network Center 2.49ms from Beijing, CN
166.111.41.150 AS4538 China Education and Research Network Center 2.37ms from Beijing, CN
166.111.99.253 AS4538 China Education and Research Network Center 2.45ms from Beijing, CN
166.111.11.1 AS4538 China Education and Research Network Center 3.94ms from Beijing, CN
166.111.127.28 AS4538 China Education and Research Network Center 2.59ms from Beijing, CN
166.111.124.1 AS4538 China Education and Research Network Center 3.87ms from Beijing, CN
166.111.29.129 AS4538 China Education and Research Network Center 3.59ms from Beijing, CN
166.111.53.207 AS4538 China Education and Research Network Center 2.07ms from Beijing, CN
166.111.4.5 AS4538 China Education and Research Network Center 2.42ms from Beijing, CN
166.111.93.1 AS4538 China Education and Research Network Center 3.63ms from Beijing, CN
166.111.102.129 AS4538 China Education and Research Network Center 2.30ms from Beijing, CN
166.111.38.107 AS4538 China Education and Research Network Center 2.37ms from Beijing, CN
166.111.109.20 AS4538 China Education and Research Network Center 2.69ms from Beijing, CN
166.111.119.1 AS4538 China Education and Research Network Center 2.23ms from Beijing, CN
166.111.92.129 AS4538 China Education and Research Network Center 3.24ms from Tianjin, CN
166.111.18.45 AS4538 China Education and Research Network Center 2.22ms from Beijing, CN
166.111.34.223 AS4538 China Education and Research Network Center 2.86ms from Beijing, CN
166.111.30.5 AS4538 China Education and Research Network Center 2.47ms from Beijing, CN
166.111.50.77 AS4538 China Education and Research Network Center 2.19ms from Beijing, CN
166.111.40.129 AS4538 China Education and Research Network Center 2.18ms from Beijing, CN
166.111.10.1 AS4538 China Education and Research Network Center 4.36ms from Beijing, CN
166.111.73.149 AS4538 China Education and Research Network Center 2.28ms from Beijing, CN
166.111.12.65 AS4538 China Education and Research Network Center 3.06ms from Tianjin, CN
166.111.116.72 AS4538 China Education and Research Network Center 3.12ms from Beijing, CN
166.111.106.1 AS4538 China Education and Research Network Center 2.37ms from Beijing, 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
154.247.14.129 AS36947 Telecom Algeria 14.06ms from Algiers, DZ
213.126.30.145 AS33915 Vodafone Libertel B.V. 0.50ms from Amsterdam, NL
174.172.135.33 AS7922 Comcast Cable Communications, LLC 4.25ms from Ashburn, US
2.86.46.65 AS6799 Ote SA (Hellenic Telecommunications Organisation) 6.21ms from Athens, GR
60.27.156.1 AS4837 CHINA UNICOM China169 Backbone 5.86ms from Beijing, CN
38.162.200.129 AS397545 Purple Cow Internet Inc 15.02ms from Boston, US
2.80.176.1 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 2.10ms from Braga, PT
184.70.223.17 AS6327 Shaw Communications 0.85ms from Calgary, CA
175.13.225.1 AS4134 CHINANET-BACKBONE 2.19ms from Changsha, CN
222.213.83.1 AS4134 CHINANET-BACKBONE 5.70ms from Chengdu, CN
171.90.157.1 AS4134 CHINANET-BACKBONE 11.95ms from Chengdu, CN
112.192.44.1 AS4837 CHINA UNICOM China169 Backbone 10.65ms from Chengdu, CN
223.87.6.33 AS9808 China Mobile Communications Group Co., Ltd. 1.88ms from Chengdu, CN
47.35.76.1 AS20115 Charter Communications LLC 5.07ms from Chicago, US
173.242.94.225 AS36001 Bertram Communications LLC 0.25ms from Chicago, US
208.59.136.1 AS6079 RCN 0.53ms from Chicago, US
113.249.189.113 AS4134 CHINANET-BACKBONE 1.87ms from Chongqing, CN
69.94.250.81 AS25956 Logix 5.57ms from Dallas, US
87.200.146.1 AS15802 Emirates Integrated Telecommunications Company PJSC 2.64ms from Dubai, AE
156.227.0.1 AS149440 Evoxt Enterprise 0.48ms from Frankfurt am Main, DE
109.71.128.1 AS50133 Wimifi Systems Telecom and Electronics SARL 4.70ms from Geneve, CH
129.16.50.129 AS2841 Chalmers University of Technology 0.71ms from Goeteborg, SE
85.183.140.81 AS6805 Telefonica Germany GmbH & Co.OHG 4.35ms from Hamburg, DE
122.231.12.129 AS4134 CHINANET-BACKBONE 6.08ms from Hangzhou, CN
103.186.154.1 AS63739 VIETPN Company Limited 0.64ms from Hanoi, VN

Traceroute

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

$
traceroute -a -n -q1 -f5 166.111.127.148
traceroute to 166.111.127.148 (166.111.127.148): 64 hops max, 52 byte packets
5 [AS4788] 58.26.87.61 1.71 ms
6 *
7 [] 123.255.91.118 43.94 ms
8 [AS4538] 101.4.114.181 77.755 ms
9 *
10 *
11 [AS4538] 101.4.115.249 77.014 ms
12 *
13 [AS4538] 202.112.38.142 72.445 ms
14 [AS4538] 118.229.4.74 73.495 ms
15 *
16 [AS4538] 166.111.127.148 72.527 ms
Measurement taken from IPinfo ProbeNet in Kuala Lumpur, MY
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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