210.72.26.0/23

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	210.72.0.0/17
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inetnum:        210.72.0.0 - 210.72.127.255
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:  2023-10-09T05:58:10Z
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:          210.72.0.0/17
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:  2023-10-06T05:09:22Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.72.26.0/23

Range	ASN	Company	Num of IPs
210.72.0.0/17	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	32,768

Nearby Ranges

BGP prefixes that overlap with 210.72.0.0/16

Range	ASN	Company	Num of IPs
210.72.0.0/17	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	32,768
210.72.160.0/19	AS4808	China Internet Network Information Center	8,192
210.72.192.0/19	AS4808	Communication Center, China Aerospace	8,192
210.72.128.0/19	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
210.72.27.80	airscan.top	1
210.72.26.47	tgenviron.org	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

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

IP Address	ASN	Details
210.72.26.248	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.78ms` from Beijing, CN
210.72.27.135	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.94ms` 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
154.28.251.103	AS46261 QuickPacket, LLC	`0.23ms` from Ashburn, US
181.120.196.39	AS23201 Telecel S.A.	`10.29ms` from Asuncion, PY
173.221.229.183	AS7029 Windstream Communications LLC	`5.06ms` from Atlanta, US
50.216.133.7	AS30196 CAPS	`5.67ms` from Boston, US
45.241.6.199	AS24863 Link Egypt (Link.NET)	`10.86ms` from Cairo, EG
123.145.235.183	AS4837 CHINA UNICOM China169 Backbone	`1.56ms` from Chongqing, CN
23.116.87.215	AS7018 AT&T Enterprises, LLC	`2.94ms` from Dallas, US
119.51.232.199	AS4837 CHINA UNICOM China169 Backbone	`7.98ms` from Harbin, CN
211.58.183.119	AS9318 SK Broadband Co Ltd	`7.12ms` from Incheon, KR
124.152.17.23	AS4837 CHINA UNICOM China169 Backbone	`8.84ms` from Lanzhou, CN
201.175.161.199	AS28469 AT&T COMUNICACIONES DIGITALES S DE RL	`4.17ms` from Los Angeles, US
212.128.243.23	AS766 RedIRIS Autonomous System	`1.54ms` from Madrid, ES
79.45.44.183	AS3269 Telecom Italia S.p.A.	`4.25ms` from Milan, IT
115.28.139.199	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.30ms` from Qingdao, CN
45.142.194.135	AS396073 Majestic Hosting Solutions, LLC	`0.36ms` from Santa Clara, US
181.37.233.55	AS28118 ALTICE DOMINICANA S.A.	`9.58ms` from Santo Domingo, DO
24.235.142.135	AS7992 Cogeco Connexion Inc.	`11.60ms` from Toronto, CA
34.211.28.23	AS16509 Amazon.com, Inc.	`0.33ms` from Boardman, US
201.67.75.103	AS8167 V tal	`1.28ms` from Brasilia, BR
102.97.68.199	AS36925 MEDITELECOM	`6.82ms` from Casablanca, MA
34.56.215.231	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
198.109.72.7	AS237 Merit Network Inc.	`2.23ms` from Detroit, US
101.99.14.167	AS45903 CMC Telecom Infrastructure Company	`1.04ms` from Hanoi, VN
156.242.137.151	AS132839 POWER LINE DATACENTER	`1.02ms` from Hong Kong, HK
51.199.238.23	AS5607 Sky UK Limited	`3.01ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f3 210.72.26.254

traceroute to 210.72.26.254 (210.72.26.254): 64 hops max, 52 byte packets

3 [AS749] 11.254.129.53 1.283 ms

4 [AS749] 11.62.83.173 0.605 ms

5 *

6 [AS141679] 106.63.0.165 0.901 ms

7 [AS141679] 106.63.121.105 0.477 ms

8 *

9 *

10 [AS4134] 202.97.92.2 4.157 ms

11 [AS7497] 159.226.254.69 4.204 ms

12 [AS7497] 159.226.254.158 5.857 ms

13 [AS7497] 210.72.26.254 3.858 ms

Measurement taken from

IPinfo ProbeNet in Tianjin, 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.

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