210.75.240.0/23

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	210.75.224.0/19
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inetnum:        210.75.224.0 - 210.75.255.255
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:          210.75.224.0/19
descr:          Route origin from CSTNET
country:        CN
origin:         AS7497
remarks:        Please contact lihong@cstnet.cn if you have any
remarks:        questions regarding this object.
remarks:        Antispam mail please send to antispam@cstnet.cn.
notify:         lihong@cstnet.cn
mnt-by:         MAINT-CSTNET-CN
last-modified:  2023-10-06T05:09:24Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.75.240.0/23

Range	ASN	Company	Num of IPs
210.75.224.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192

Nearby Ranges

BGP prefixes that overlap with 210.75.0.0/16

Range	ASN	Company	Num of IPs
210.75.192.0/19	AS18239	China Internet Network Information Center	8,192
210.75.224.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192

Hosted domains

There are 16 domain names hosted across 8 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.75.240.5	nsfc.gov.cn	9
210.75.240.142	stimes.cn	1
210.75.241.52	xinhuagroup.com.cn	1
210.75.240.141	chatknow.top	1
210.75.240.164	hceo.ac.cn	1
210.75.240.39	solver-plex.top	1
210.75.241.51	betop.com.cn	1
210.75.240.6	seeod.net	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

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

IP Address	ASN	Details
210.75.240.158	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.52ms` from Beijing, CN
210.75.241.120	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`1.28ms` 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
5.194.85.199	AS5384 Emirates Internet	`5.31ms` from Al Fujairah City, AE
191.56.14.167	AS4230 CLARO S.A.	`19.88ms` from Brasilia, BR
66.253.137.87	AS23473 PAVLOV MEDIA INC	`4.70ms` from Chicago, US
97.243.143.215	AS6167 Verizon Business	`12.81ms` from Chicago, US
141.147.3.7	AS31898 Oracle Corporation	`0.19ms` from Frankfurt am Main, DE
115.192.231.135	AS4134 CHINANET-BACKBONE	`6.14ms` from Hangzhou, CN
111.95.137.55	AS23700 Linknet-Fastnet ASN	`4.86ms` from Jakarta, ID
31.49.66.167	AS2856 British Telecommunications PLC	`3.81ms` from London, GB
79.156.188.215	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.63ms` from Madrid, ES
176.77.22.103	AS12714 PJSC MegaFon	`1.73ms` from Moscow, RU
88.122.6.87	AS12322 Free SAS	`2.30ms` from Paris, FR
91.163.89.215	AS12322 Free SAS	`2.66ms` from Paris, FR
176.128.130.119	AS5410 Bouygues Telecom SA	`4.19ms` from Paris, FR
46.13.187.247	AS13036 T-Mobile Czech Republic a.s.	`2.36ms` from Prague, CZ
180.52.59.167	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.00ms` from Tokyo, JP
171.115.240.7	AS4134 CHINANET-BACKBONE	`8.85ms` from Wuhan, CN
173.194.76.215	AS15169 Google LLC	`0.19ms` from Brussels, BE
98.187.37.151	AS22773 Cox Communications Inc.	`8.51ms` from Dallas, US
1.189.228.135	AS4837 CHINA UNICOM China169 Backbone	`2.23ms` from Harbin, CN
221.140.204.23	AS9318 SK Broadband Co Ltd	`1.54ms` from Incheon, KR
20.199.218.231	AS8075 Microsoft Corporation	`3.99ms` from Kloten, CH
68.127.71.87	AS7018 AT&T Enterprises, LLC	`1.72ms` from Los Angeles, US
88.13.136.231	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.27ms` from Madrid, ES
73.24.87.119	AS7922 Comcast Cable Communications, LLC	`14.90ms` from Miami, US
73.37.196.247	AS7922 Comcast Cable Communications, LLC	`6.51ms` from Minneapolis, US

Traceroute

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

traceroute -a -n -q1 -f6 210.75.240.12

traceroute to 210.75.240.12 (210.75.240.12): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.128 6.498 ms

7 *

8 [AS7497] 210.75.240.12 5.543 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

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.

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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