210.76.208.0/21

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 210.76.208.0/21

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 5 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.76.211.113	feds.ac.cn	3
210.76.211.10	unit.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

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

IP Address	ASN	Details
210.76.212.243	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.64ms` from Beijing, CN
210.76.214.125	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.41ms` from Beijing, CN
210.76.211.89	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.58ms` from Beijing, CN
210.76.215.11	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.73ms` from Beijing, CN
210.76.213.17	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.61ms` 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
44.233.46.197	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
222.212.210.21	AS38283 CHINANET SiChuan Telecom Internet Data Center	`2.36ms` from Chengdu, CN
2.101.61.181	AS13285 TalkTalk Communications Limited	`6.13ms` from London, GB
31.98.90.101	AS51809 BRSK Limited	`0.42ms` from London, GB
83.50.209.133	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.41ms` from Madrid, ES
67.80.246.37	AS6128 Cablevision Systems Corp.	`5.97ms` from New York City, US
52.67.246.245	AS16509 Amazon.com, Inc.	`0.15ms` from Osasco, BR
24.124.233.69	AS7922 Comcast Cable Communications, LLC	`2.52ms` from Secaucus, US
59.23.102.181	AS4766 Korea Telecom	`8.73ms` from Seoul, KR
202.148.9.101	AS38778 PT. Dutakom Wibawa Putra	`0.61ms` from Surabaya, ID
221.103.212.149	AS17676 SoftBank Corp.	`2.60ms` from Tokyo, JP
122.134.145.69	AS2518 BIGLOBE Inc.	`2.12ms` from Tokyo, JP
66.248.196.5	AS199524 G-Core Labs S.A.	`0.14ms` from Amsterdam, NL
97.129.215.229	AS6167 Verizon Business	`17.27ms` from Atlanta, US
172.206.69.133	AS8075 Microsoft Corporation	`0.26ms` from Boydton, US
24.152.18.101	AS270495 JRD TELECOM LTDA	`8.61ms` from Curitiba, BR
125.124.237.229	AS58461 CT-HangZhou-IDC	`5.32ms` from Hangzhou, CN
141.11.82.21	AS61317 Hivelocity LLC	`0.43ms` from London, GB
203.45.255.117	AS1221 Telstra Limited	`2.09ms` from Melbourne, AU
87.10.63.85	AS3269 Telecom Italia S.p.A.	`4.04ms` from Milan, IT
129.219.141.21	AS2900 Arizona Tri University Network	`0.84ms` from Phoenix, US
92.100.7.101	AS12389 PJSC Rostelecom	`17.92ms` from Saint Petersburg, RU
125.191.78.21	AS17858 LG POWERCOMM	`2.98ms` from Seoul, KR
67.58.214.21	AS11260 EastLink	`15.11ms` from Toronto, CA
193.115.78.69	AS7545 TPG Telecom Limited	`11.18ms` from Adelaide, AU

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 210.76.209.209

traceroute to 210.76.209.209 (210.76.209.209): 12 hops max, 52 byte packets

5 [AS174] 154.54.94.113 153.137 ms

6 [AS174] 154.18.9.165 152.654 ms

7 [AS7497] 159.226.254.229 185.011 ms

8 [AS7497] 159.226.254.237 185.24 ms

9 [AS7497] 159.226.254.162 185.048 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On January 9th 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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