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:         [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 210.76.208.0/21

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

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
210.76.213.17	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.59ms` from Beijing, CN
210.76.211.89	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.54ms` from Beijing, CN
210.76.215.11	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.28ms` from Beijing, CN
210.76.214.36	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.89ms` from Beijing, CN
210.76.212.182	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.62ms` 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
69.73.145.213	AS11042 NETWORK TRANSIT HOLDINGS LLC	`0.47ms` from Atlanta, US
50.227.7.101	AS7922 Comcast Cable Communications, LLC	`1.67ms` from Atlanta, US
160.187.76.117	AS153241 APLEIXA TECHNOLOGIES PVT LTD	`1.73ms` from Bengaluru, IN
175.9.104.117	AS4134 CHINANET-BACKBONE	`2.60ms` from Changsha, CN
216.253.195.181	AS3549 Level 3 Parent, LLC	`0.38ms` from Denver, US
68.148.75.149	AS6327 Shaw Communications	`4.24ms` from Edmonton, CA
80.147.227.181	AS3320 Deutsche Telekom AG	`4.47ms` from Frankfurt am Main, DE
157.167.46.165	AS44444 Forcepoint UK Limited	`0.35ms` from Frankfurt am Main, DE
193.19.162.21	AS8767 M-net Telekommunikations GmbH	`6.31ms` from Frankfurt am Main, DE
106.53.121.85	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.15ms` from Guangzhou, CN
1.95.180.149	AS55990 Huawei Cloud Service data center	`1.10ms` from Guiyang, CN
113.177.55.5	AS45899 VNPT Corp	`2.35ms` from Hanoi, VN
117.161.132.5	AS9808 China Mobile Communications Group Co., Ltd.	`3.00ms` from Hohhot, CN
180.104.213.213	AS4134 CHINANET-BACKBONE	`8.30ms` from Huai'an, CN
122.35.20.133	AS17858 LG POWERCOMM	`1.46ms` from Incheon, KR
119.62.68.21	AS4837 CHINA UNICOM China169 Backbone	`2.99ms` from Kunming, CN
84.129.113.149	AS3320 Deutsche Telekom AG	`5.28ms` from Nuernberg, DE
98.246.196.165	AS7922 Comcast Cable Communications, LLC	`5.01ms` from Portland, US
38.12.151.69	AS54600 PEG TECH INC	`0.64ms` from San Jose, US
203.66.231.5	AS3462 Data Communication Business Group	`0.68ms` from Taipei, TW
120.194.115.21	AS24445 Henan Mobile Communications Co.,Ltd	`6.61ms` from Zhengzhou, CN
45.170.130.245	AS61512 GIG@NET SOCIEDAD ANONIMA	`5.88ms` from Asuncion, PY
103.142.234.101	AS4808 China Unicom Beijing Province Network	`4.17ms` from Beijing, CN
83.134.111.197	AS5432 Proximus NV	`1.97ms` from Brussels, BE
156.223.74.197	AS8452 TE-AS	`4.98ms` from Cairo, EG

Traceroute

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

traceroute -a -n -q1 -f6 210.76.215.11

traceroute to 210.76.215.11 (210.76.215.11): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.128 6.219 ms

7 [AS7497] 159.226.254.89 4.351 ms

8 *

9 *

10 *

11 [AS7497] 210.77.16.121 5.865 ms

12 *

13 [AS7497] 210.76.215.11 4.365 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On January 30th 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.

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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