166.111.192.0/18

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 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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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 166.111.192.0/18

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 16 domain names hosted across 15 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
166.111.236.70 peidan.me 1
166.111.247.212 hepthu.com 1
166.111.215.133 experter.com.cn 1
166.111.247.154 junhuai.fun 1
166.111.247.135 gidar.cn 1
166.111.224.30 qdlabthu.com 1
166.111.237.12 tongze.wang 1
166.111.247.99 enpg.cn 1
166.111.238.37 joycheck.com.cn 1
166.111.247.29 relics.org.cn 1
166.111.238.247 closedai.top 1
166.111.236.142 tsinghuaqna.cn 1
166.111.224.90 baobabbob.cn 1
166.111.247.25 tmeg.top 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

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

IP Address ASN Details
166.111.240.92 AS4538 China Education and Research Network Center 2.69ms from Beijing, CN
166.111.223.1 AS4538 China Education and Research Network Center 3.39ms from Beijing, CN
166.111.215.133 AS4538 China Education and Research Network Center 3.19ms from Beijing, CN
166.111.232.35 AS4538 China Education and Research Network Center 2.21ms from Beijing, CN
166.111.208.47 AS4538 China Education and Research Network Center 2.32ms from Beijing, CN
166.111.241.5 AS4538 China Education and Research Network Center 2.57ms from Beijing, CN
166.111.237.203 AS4538 China Education and Research Network Center 2.27ms from Beijing, CN
166.111.204.5 AS4538 China Education and Research Network Center 2.96ms from Tianjin, CN
166.111.213.1 AS4538 China Education and Research Network Center 4.40ms from Beijing, CN
166.111.224.112 AS4538 China Education and Research Network Center 2.32ms from Beijing, CN
166.111.216.65 AS4538 China Education and Research Network Center 3.40ms from Beijing, CN
166.111.242.1 AS4538 China Education and Research Network Center 2.17ms from Beijing, CN
166.111.196.206 AS4538 China Education and Research Network Center 2.68ms from Beijing, CN
166.111.238.63 AS4538 China Education and Research Network Center 2.27ms from Beijing, CN
166.111.239.31 AS4538 China Education and Research Network Center 2.25ms from Beijing, CN
166.111.219.206 AS4538 China Education and Research Network Center 2.47ms from Beijing, CN
166.111.247.161 AS4538 China Education and Research Network Center 2.33ms from Beijing, CN
166.111.244.223 AS4538 China Education and Research Network Center 2.81ms from Beijing, CN
166.111.222.161 AS4538 China Education and Research Network Center 3.54ms from Beijing, CN
166.111.214.1 AS4538 China Education and Research Network Center 2.15ms from Beijing, CN
166.111.245.226 AS4538 China Education and Research Network Center 2.48ms from Beijing, CN
166.111.246.77 AS4538 China Education and Research Network Center 3.12ms from Beijing, CN
166.111.254.1 AS4538 China Education and Research Network Center 3.89ms from Beijing, CN
166.111.248.1 AS4538 China Education and Research Network Center 4.09ms from Beijing, CN
166.111.192.105 AS4538 China Education and Research Network Center 2.24ms 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
94.56.207.210 AS5384 Emirates Internet 5.73ms from Al Fujairah City, AE
154.240.84.114 AS36947 Telecom Algeria 9.13ms from Algiers, DZ
73.147.81.226 AS7922 Comcast Cable Communications, LLC 10.46ms from Ashburn, US
67.246.141.98 AS11351 Charter Communications Inc 16.40ms from Chicago, US
87.92.251.162 AS16086 DNA Oyj 0.75ms from Helsinki, FI
175.136.22.194 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 3.39ms from Kuala Lumpur, MY
38.253.143.98 AS265691 WI-NET TELECOM S.A.C. 1.33ms from Lima, PE
210.49.97.66 AS4804 Microplex PTY LTD 1.21ms from Melbourne, AU
75.74.2.146 AS7922 Comcast Cable Communications, LLC 5.07ms from Miami, US
79.36.47.130 AS3269 Telecom Italia S.p.A. 5.76ms from Milan, IT
62.141.92.2 AS3216 PJSC "Vimpelcom" 2.90ms from Moscow, RU
180.56.88.98 AS4713 NTT DOCOMO BUSINESS,Inc. 11.03ms from Osaka, JP
133.155.14.130 AS7524 ITEC HANKYU HANSHIN CO.,LTD. 1.44ms from Osaka, JP
52.242.25.178 AS8075 Microsoft Corporation 0.17ms from Quebec, CA
34.232.124.82 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
23.230.87.2 AS137235 MOBILE SALES & DISTRIBUTION (PVT.) LIMITED 0.60ms from Santa Clara, US
189.9.187.2 AS10954 SERVICO FEDERAL DE PROCESSAMENTO DE DADOS - SERPRO 1.38ms from Sao Paulo, BR
75.253.116.18 AS6167 Verizon Business 10.34ms from Seattle, US
199.224.99.130 AS3593 Frontier Communications of America, Inc. 7.40ms from Secaucus, US
203.229.152.18 AS4766 Korea Telecom 1.05ms from Seoul, KR
61.76.41.114 AS4766 Korea Telecom 7.14ms from Seoul, KR
165.21.96.50 AS3758 SingNet 0.86ms from Singapore, SG
1.163.163.210 AS3462 Data Communication Business Group 1.71ms from Taipei, TW
103.28.169.2 AS132827 GATEWAY INC 0.48ms from Tokyo, JP
45.223.87.2 AS19551 Incapsula Inc 0.24ms from Zuerich, CH

Traceroute

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

$
traceroute -a -n -q1 -f3 -m11 166.111.231.133
traceroute to 166.111.231.133 (166.111.231.133): 11 hops max, 52 byte packets
3 [] 79.127.192.186 0.243 ms
5 *
6 [AS58453] 223.119.81.94 55.652 ms
7 *
8 [AS4538] 101.4.116.121 170.122 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Tokyo, JP
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