203.187.188.0/22

AS23724 · IDC, China Telecommunications Corporation

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Summary

Country	China
Domain	sinnet.com.cn
ASN	AS23724
Registry	APNIC
ID	ZGCKJ

WHOIS Details

inetnum:        203.187.190.0 - 203.187.190.255
netname:        zgckj
country:        CN
descr:          Zhongguancun science and technology Ltd.
descr:          National Internet Registry
descr:          Haidian Distric, Beijing
admin-c:        CH471-AP
tech-c:         WH271-AP
status:         ASSIGNED NON-PORTABLE
changed:        wangxl@sinnet.com.cn 20041216
mnt-by:         MANT-CN-SINNET
source:         APNIC

person:         Chen hao
nic-hdl:        CH471-AP
e-mail:         lichao@sinnet.com.cn
address:        Langfang university Langfang Development Area
phone:          +86-13311166160
country:        CN
changed:        ipas@cnnic.cn 20080227
mnt-by:         MAINT-CNNIC-AP
source:         APNIC

person:         Wang Huijun
nic-hdl:        WH271-AP
e-mail:         chenbincb@sinnet.com.cn
address:        Langfang university Langfang Development Area
phone:          +86-13311166160
fax-no:         +86-64181819
country:        CN
changed:        ipas@cnnic.cn 20080227
mnt-by:         MAINT-CNNIC-AP
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.187.0.0/16

Range	ASN	Company	Num of IPs
203.187.128.0/19	AS3300	BT-Infonet, Internet Service Provider	8,192
203.187.192.0/24	AS18207	YOU Broadband & Cable India Ltd.	256
203.187.193.0/24	AS18207	YOU Broadband & Cable India Ltd.	256
203.187.145.0/24	AS3300	BT GIA SNG	256
203.187.146.0/24	AS3300	BT GIA SNG	256

Hosted domains

There are 9 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.187.188.134	changrungroup.cn	9

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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.187.189.154	AS23724 IDC, China Telecommunications Corporation	`4.54ms` 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
12.194.108.6	AS7018 AT&T Enterprises, LLC	`0.98ms` from Chicago, US
50.194.208.198	AS7922 Comcast Cable Communications, LLC	`13.47ms` from Chicago, US
14.217.140.54	AS4134 CHINANET-BACKBONE	`4.12ms` from Guangzhou, CN
198.101.118.118	AS14265 TPx Communications	`0.38ms` from Los Angeles, US
217.57.104.182	AS3269 Telecom Italia S.p.A.	`3.67ms` from Milan, IT
65.2.187.246	AS16509 Amazon.com, Inc.	`0.12ms` from Mumbai, IN
114.152.211.118	AS4713 NTT DOCOMO BUSINESS,Inc.	`9.77ms` from Osaka, JP
153.244.208.150	AS4713 NTT DOCOMO BUSINESS,Inc.	`11.80ms` from Osaka, JP
187.194.175.54	AS8151 UNINET	`5.50ms` from Santiago de Queretaro, MX
221.168.52.134	AS4766 Korea Telecom	`2.20ms` from Seoul, KR
47.237.144.182	AS45102 Alibaba (US) Technology Co., Ltd.	`0.78ms` from Singapore, SG
91.236.137.6	AS198891 AIROUTE S.C. Sebastian Wrona, Szymon Wrobel	`6.38ms` from Warsaw, PL
84.74.204.198	AS6730 Sunrise GmbH	`6.09ms` from Zuerich, CH
73.174.188.70	AS7922 Comcast Cable Communications, LLC	`12.47ms` from Ashburn, US
24.15.203.38	AS7922 Comcast Cable Communications, LLC	`4.94ms` from Chicago, US
13.58.13.6	AS16509 Amazon.com, Inc.	`0.15ms` from Columbus, US
99.91.195.150	AS7018 AT&T Enterprises, LLC	`6.81ms` from Dallas, US
113.175.250.22	AS45899 VNPT Corp	`2.82ms` from Hanoi, VN
34.96.239.246	AS396982 Google LLC	`0.11ms` from Hong Kong, HK
175.138.44.198	AS4788 TM TECHNOLOGY SERVICES SDN. BHD.	`6.15ms` from Kuala Lumpur, MY
104.12.83.86	AS7018 AT&T Enterprises, LLC	`4.43ms` from Los Angeles, US
142.126.62.150	AS577 Bell Canada	`1.68ms` from Montreal, CA
191.12.91.246	AS26599 TELEFÔNICA BRASIL S.A	`14.43ms` from Rio de Janeiro, BR
181.42.232.230	AS27651 ENTEL CHILE S.A.	`0.97ms` from Santiago, CL
58.41.10.166	AS4812 China Telecom (Group)	`3.93ms` from Shanghai, CN

Traceroute

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

traceroute -a -n -q1 -m5 203.187.191.2

traceroute to 203.187.191.2 (203.187.191.2): 5 hops max, 52 byte packets

1 [AS31898] 140.91.236.15 0.069 ms

2 [AS15802] 91.74.125.162 1.146 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Dubai, AE

On December 14th 2025

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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