203.196.0.0/21

AS23724 · IDC, China Telecommunications Corporation

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Summary

Country	China
Domain	21vianet.com
ASN	AS23724
Registry	APNIC
ID	CHINA-21VIANET

WHOIS Details

inetnum:        203.196.0.0 - 203.196.7.255
netname:        CHINA-21VIANET
descr:          21ViaNet(China),Inc.
descr:          BOE Science Park, 10 Jiuxianqiao Road, Chaoyang,
descr:          Beijing 100016, China
country:        CN
admin-c:        ML2382-AP
tech-c:         BW667-AP
abuse-c:        AC1601-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-CNNIC-AP
mnt-lower:      MAINT-CN-21VIANET
mnt-routes:     MAINT-CNNIC-AP
mnt-irt:        IRT-CNNIC-CN
last-modified:  2021-06-16T01:25:22Z
source:         APNIC

irt:            IRT-CNNIC-CN
address:        Beijing, China
e-mail:         ipas@cnnic.cn
abuse-mailbox:  ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
auth:           # Filtered
remarks:        Please note that CNNIC is not an ISP and is not
remarks:        empowered to investigate complaints of network abuse.
remarks:        Please contact the tech-c or admin-c of the network.
remarks:        ipas@cnnic.cn is invalid
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-09-19T17:19:56Z
source:         APNIC

role:           ABUSE CNNICCN
country:        ZZ
address:        Beijing, China
phone:          +000000000
e-mail:         ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        ipas@cnnic.cn is invalid
abuse-mailbox:  ipas@cnnic.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-19T17:20:32Z
source:         APNIC

person:         Cao Wentao
address:        BOE Science Park, 10 Jiuxianqiao Road, Chaoyang,Beijing 100016, China
country:        CN
phone:          +86-10-84562121
fax-no:         +86-10-84564234
e-mail:         abusemail1010@sina.com
nic-hdl:        BW667-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2014-12-26T06:30:02Z
source:         APNIC

person:         Li  Xuesong
address:        BOE Science Park, 10 Jiuxianqiao Road, Chaoyang,Beijing 100016, China
country:        CN
phone:          +86-10-84562121
fax-no:         +86-10-84564234
e-mail:         abuse@21viamail.com
nic-hdl:        ML2382-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2014-12-26T06:30:02Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 203.196.0.0/21

Range	ASN	Company	Num of IPs
203.196.0.0/22	AS9308	Provide Internet access service,Internet Based Testing	1,024

Nearby Ranges

BGP prefixes that overlap with 203.196.0.0/16

Range	ASN	Company	Num of IPs
203.196.32.0/19	AS38333	Telcoinabox Operations Pty Ltd	8,192
203.196.64.0/20	AS17534	NSK Co.,Ltd.	4,096
203.196.112.0/20	AS2687	Asia Pacific Operations	4,096
203.196.16.0/21	AS2514	INTERLINK Co.,LTD.	2,048
203.196.80.0/21	AS17534	KANAZAWA CABLE TELEVISION NET CO.,LTD.	2,048
203.196.0.0/22	AS9308	Provide Internet access service,Internet Based Testing	1,024
203.196.24.0/22	AS7602	Sai gon Postel Corporation	1,024
203.196.92.0/22	AS7604	Zettagrid Pty Ltd	1,024
203.196.101.0/24	AS2687	AT&T	256
203.196.14.0/24	AS23764	Chinatelecom Next Carrying Network backbone Singapore	256
203.196.15.0/24	AS23764	Chinatelecom Next Carrying Network backbone	256
203.196.90.0/24	AS131762	PT. VOLTRAS International	256

Hosted domains

There are 15 domain names hosted across 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.196.4.101	fmc.com.cn	8
203.196.4.50	http.net.cn	2
203.196.7.83	acdelcochina.com	1
203.196.0.6	zjdechuan.com	1
203.196.7.90	hijiki.com.cn	1
203.196.7.251	chinaev.com	1
203.196.4.99	essex.com.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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.196.0.6	AS9308 Abitcool(China) Inc.	`3.17ms` from Tianjin, CN
203.196.4.100	AS23724 IDC, China Telecommunications Corporation	`5.91ms` from Beijing, CN
203.196.1.6	AS9308 Abitcool(China) Inc.	`3.25ms` from Beijing, CN
203.196.7.45	AS4835 China Telecom (Group)	`4.13ms` 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
135.148.142.85	AS16276 OVH SAS	`1.38ms` from Ashburn, US
101.73.105.101	AS4837 CHINA UNICOM China169 Backbone	`7.28ms` from Beijing, CN
35.92.226.197	AS16509 Amazon.com, Inc.	`0.52ms` from Boardman, US
75.222.194.69	AS6167 Verizon Business	`18.79ms` from Chicago, US
98.206.87.69	AS7922 Comcast Cable Communications, LLC	`5.38ms` from Chicago, US
34.28.76.117	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
69.134.157.5	AS7843 Charter Communications Inc	`14.46ms` from Dallas, US
3.124.7.21	AS16509 Amazon.com, Inc.	`0.12ms` from Frankfurt am Main, DE
185.65.20.5	AS201745 COURIER-SERVICE, LLC	`0.28ms` from Hong Kong, HK
221.231.24.229	AS4134 CHINANET-BACKBONE	`6.91ms` from Huai'an, CN
90.205.21.229	AS5607 Sky UK Limited	`4.35ms` from London, GB
134.69.82.5	AS14486 Occidental College	`1.59ms` from Los Angeles, US
104.62.24.85	AS7018 AT&T Enterprises, LLC	`2.59ms` from Los Angeles, US
91.217.124.213	AS206124 MAZARRON-5G, S.L.	`8.98ms` from Madrid, ES
148.243.104.85	AS6503 Axtel, S.A.B. de C.V.	`1.43ms` from Monterrey, MX
20.18.140.117	AS8075 Microsoft Corporation	`0.14ms` from Osaka, JP
27.209.226.213	AS4837 CHINA UNICOM China169 Backbone	`7.15ms` from Qingdao, CN
34.205.37.229	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
189.61.189.21	AS28573 Claro NXT Telecomunicacoes Ltda	`9.82ms` from Rio de Janeiro, BR
155.101.126.53	AS17055 University of Utah	`1.55ms` from Salt Lake City, US
123.116.196.5	AS4808 China Unicom Beijing Province Network	`3.50ms` from Beijing, CN
84.2.10.149	AS5483 Magyar Telekom Plc.	`6.87ms` from Budapest, HU
208.40.107.165	AS2707 First Communications LLC	`4.43ms` from Buffalo, US
45.47.97.181	AS11351 Charter Communications Inc	`18.39ms` from Chicago, US
3.137.194.181	AS16509 Amazon.com, Inc.	`0.69ms` from Columbus, 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 203.196.5.132

traceroute to 203.196.5.132 (203.196.5.132): 12 hops max, 52 byte packets

2 [AS3356] 8.243.140.145 0.985 ms

3 *

4 [AS3356] 4.26.3.26 326.097 ms

5 *

6 *

7 *

8 *

9 [AS4808] 61.149.202.129 338.778 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Buenos Aires, AR

On November 6th 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.

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