210.76.192.0/21

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:         abuse-ip@cstnet.cn
abuse-mailbox:  abuse-ip@cstnet.cn
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
auth:           # Filtered
remarks:        abuse-ip@cstnet.cn 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:         support@cnic.cn
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:         abuse-ip@cstnet.cn
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
nic-hdl:        AC2741-AP
remarks:        Generated from irt object IRT-CSTNET-CN
remarks:        abuse-ip@cstnet.cn was validated on 2025-07-25
abuse-mailbox:  abuse-ip@cstnet.cn
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:         supervise@cnic.cn
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 210.76.192.0/21

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

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

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Pingable IPs

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

IP Address	ASN	Details
210.76.193.254	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.56ms` from Beijing, CN
210.76.194.134	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.32ms` from Beijing, CN
210.76.195.136	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.93ms` from Beijing, CN
210.76.197.18	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.29ms` from Beijing, CN
210.76.196.29	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.64ms` from Beijing, CN
210.76.192.253	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.66ms` 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
107.202.19.21	AS7018 AT&T Enterprises, LLC	`5.51ms` from Atlanta, US
191.110.109.149	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`18.20ms` from Bogotá, CO
186.57.224.197	AS22927 Telefonica de Argentina	`2.40ms` from Buenos Aires, AR
181.96.147.85	AS7303 Telecom Argentina S.A.	`3.34ms` from Buenos Aires, AR
75.88.66.5	AS7029 Windstream Communications LLC	`12.86ms` from Chicago, US
222.180.104.213	AS4134 CHINANET-BACKBONE	`3.46ms` from Chongqing, CN
59.44.101.85	AS134762 CHINANET Liaoning province Dalian MAN network	`0.56ms` from Dalian, CN
36.255.53.245	AS135092 Ashraf Uddin t/a Dhaka tech	`0.60ms` from Dhaka, BD
73.32.122.117	AS7922 Comcast Cable Communications, LLC	`4.51ms` from Houston, US
110.68.136.245	AS4766 Korea Telecom	`4.68ms` from Incheon, KR
211.214.109.85	AS9318 SK Broadband Co Ltd	`1.87ms` from Incheon, KR
81.156.67.5	AS2856 British Telecommunications PLC	`3.42ms` from London, GB
192.227.246.149	AS36352 HostPapa	`0.33ms` from Los Angeles, US
162.252.239.21	AS63436 Great Lakes Communication Corp.	`11.67ms` from Minneapolis, US
50.75.75.69	AS11351 Charter Communications Inc	`8.51ms` from New York City, US
182.164.250.53	AS17511 OPTAGE Inc.	`1.69ms` from Osaka, JP
91.168.33.117	AS12322 Free SAS	`3.59ms` from Paris, FR
120.151.130.133	AS1221 Telstra Limited	`2.13ms` from Perth, AU
87.244.65.53	AS8681 JT (Jersey) Limited	`0.73ms` from Saint Helier, JE
14.90.62.133	AS4766 Korea Telecom	`1.34ms` from Seoul, KR
111.70.26.117	AS17421 Mobile Business Group	`13.30ms` from Taipei, TW
103.78.157.21	AS37893 Tradeweb Japan	`1.72ms` from Tokyo, JP
1.91.16.181	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`9.38ms` from Beijing, CN
20.94.41.69	AS8075 Microsoft Corporation	`0.33ms` from Boydton, US
5.14.45.165	AS8708 DIGI ROMANIA S.A.	`3.92ms` from Bucharest, RO

Traceroute

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

traceroute -a -n -q1 -f5 -m12 210.76.199.92

traceroute to 210.76.199.92 (210.76.199.92): 12 hops max, 52 byte packets

5 [] 123.255.91.238 37.945 ms

6 [AS7497] 159.226.254.214 37.097 ms

7 [AS7497] 159.226.254.229 69.942 ms

8 [AS7497] 159.226.254.237 71.272 ms

9 [AS7497] 159.226.254.162 69.444 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 18th 2026

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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