210.76.200.0/21

AS7497 · Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)

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Summary

Country	China
Domain	cnic.cn
ASN	AS7497
Parent Range	210.76.192.0/19
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inetnum:        210.76.192.0 - 210.76.223.255
netname:        CSTNET-CN
descr:          Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
country:        CN
org:            ORG-CA107-AP
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
abuse-c:        AC2741-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CSTNET-CN
mnt-routes:     MAINT-CSTNET-CN
mnt-irt:        IRT-CSTNET-CN
last-modified:  2023-10-10T01:35:49Z
source:         APNIC

irt:            IRT-CSTNET-CN
address:        2 Dongsheng South Road, Haidian District, Beijing Beijing 100190
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-07-25
mnt-by:         MAINT-CSTNET-CN
last-modified:  2025-11-18T00:35:26Z
source:         APNIC

organisation:   ORG-CA107-AP
org-name:       CNIC-CAS
org-type:       LIR
country:        CN
address:        2 Dongsheng South Road, Haidian District
phone:          +86.10.58812266
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:18:50Z
source:         APNIC

role:           ABUSE CSTNETCN
country:        ZZ
address:        2 Dongsheng South Road, Haidian District, Beijing Beijing 100190
phone:          +000000000
e-mail:         [email protected]
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
nic-hdl:        AC2741-AP
remarks:        Generated from irt object IRT-CSTNET-CN
remarks:        [email protected] was validated on 2025-07-25
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-25T01:16:46Z
source:         APNIC

role:           Computer Network Information Center of Chinese Academy of Sciences administrator
address:        2 Dongsheng South Road, Haidian District, Beijing Beijing 100190
country:        CN
phone:          +86.10.58812266
e-mail:         [email protected]
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
nic-hdl:        CNIC1-AP
mnt-by:         MAINT-CNICOCAOS-CN
last-modified:  2022-05-12T07:31:01Z
source:         APNIC

route:          210.76.192.0/19
descr:          Chinese Science & Technology Network
country:        CN
origin:         AS7497
mnt-by:         MAINT-CSTNET-CN
last-modified:  2023-10-06T05:09:24Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.76.200.0/21

Range	ASN	Company	Num of IPs
210.76.192.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192

Nearby Ranges

BGP prefixes that overlap with 210.76.0.0/16

Range	ASN	Company	Num of IPs
210.76.64.0/19	AS134773	Digital Guangdong Network Construction Co, Ltd	8,192
210.76.0.0/19	AS24137	HeNan Ping Coal Group	8,192
210.76.32.0/19	AS4837	The Science&Technology Information Center of Heilongjiang	8,192
210.76.192.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.76.203.3	gscas.ac.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

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

IP Address	ASN	Details
210.76.200.71	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.02ms` from Beijing, CN
210.76.203.134	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.81ms` from Beijing, CN
210.76.204.64	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.57ms` 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
12.77.56.117	AS7018 AT&T Enterprises, LLC	`0.78ms` from Atlanta, US
203.158.225.181	AS132866 Rajamangala University of Technology Suvarnabhumi under UniNet Network	`1.30ms` from Bangkok, TH
46.229.225.37	AS29405 VNET a.s.	`0.31ms` from Bratislava, SK
60.243.113.181	AS17488 Hathway IP Over Cable Internet	`4.88ms` from Chennai, IN
172.101.144.165	AS11351 Charter Communications Inc	`16.98ms` from Chicago, US
58.144.240.165	AS4837 CHINA UNICOM China169 Backbone	`0.28ms` from Chongqing, CN
137.118.255.197	AS40317 Peoples Communications Inc.	`2.75ms` from Dallas, US
216.230.21.5	AS397129 LifeScan Global Corporation	`17.00ms` from London, GB
82.42.90.53	AS5089 Virgin Media Limited	`8.05ms` from London, GB
193.237.88.69	AS5378 Vodafone Limited	`4.32ms` from Manchester, GB
24.51.124.53	AS15146 Cable Bahamas	`0.53ms` from Miami, US
122.21.237.37	AS4713 NTT DOCOMO BUSINESS,Inc.	`9.86ms` from Osaka, JP
217.198.137.245	AS202613 Aruba S.p.A.	`1.70ms` from Rome, IT
119.221.98.69	AS4766 Korea Telecom	`6.63ms` from Seoul, KR
118.89.207.133	AS45090 Shenzhen Tencent Computer Systems Company Limited	`3.22ms` from Shanghai, CN
182.55.115.85	AS55430 Starhub Ltd	`1.49ms` from Singapore, SG
85.217.244.181	AS39401 Link+ Ltd	`4.66ms` from Sofia, BG
125.231.64.117	AS3462 Data Communication Business Group	`1.82ms` from Taichung, TW
126.103.148.5	AS17676 SoftBank Corp.	`3.50ms` from Tokyo, JP
126.3.162.21	AS17676 SoftBank Corp.	`15.57ms` from Tokyo, JP
45.207.25.245	AS20326 TeraSwitch Networks Inc.	`0.18ms` from Amsterdam, NL
87.107.184.69	AS42337 Respina Networks & Beyond PJSC	`15.74ms` from Baku, AZ
54.68.4.181	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
98.253.37.69	AS7922 Comcast Cable Communications, LLC	`6.07ms` from Chicago, US
78.138.119.37	AS61157 PlusServer GmbH	`0.45ms` from Duesseldorf, DE

Traceroute

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

traceroute -a -n -q1 -f5 -m14 210.76.201.130

traceroute to 210.76.201.130 (210.76.201.130): 14 hops max, 52 byte packets

5 [AS6939] 184.104.188.149 67.259 ms

6 *

7 *

8 [] 123.255.91.238 196.884 ms

9 [AS7497] 159.226.254.9 235.706 ms

10 [AS7497] 159.226.254.237 235.548 ms

11 [AS7497] 159.226.254.162 235.606 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Halifax, CA

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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