210.72.9.0/24

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 210.72.9.0/24

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 5 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.72.9.160	optics.org.cn	1
210.72.9.178	optics.sh.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

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

IP Address	ASN	Details
210.72.9.1	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.97ms` from Shanghai, 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
59.108.127.136	AS4847 China Networks Inter-Exchange	`18.38ms` from Beijing, CN
54.71.92.8	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
122.137.29.72	AS4837 CHINA UNICOM China169 Backbone	`3.38ms` from Changchun, CN
69.245.203.88	AS7922 Comcast Cable Communications, LLC	`5.62ms` from Chicago, US
86.25.223.216	AS5089 Virgin Media Limited	`7.23ms` from Erith, GB
20.79.57.24	AS8075 Microsoft Corporation	`0.23ms` from Frankfurt am Main, DE
60.156.233.56	AS17676 SoftBank Corp.	`3.67ms` from Osaka, JP
20.38.6.56	AS8075 Microsoft Corporation	`0.28ms` from Phoenix, US
35.215.247.248	AS15169 Google LLC	`0.13ms` from Sao Paulo, BR
117.17.187.24	AS3786 LG DACOM Corporation	`2.21ms` from Seoul, KR
14.56.176.184	AS4766 Korea Telecom	`1.53ms` from Seoul, KR
47.130.224.104	AS16509 Amazon.com, Inc.	`0.11ms` from Singapore, SG
41.100.143.216	AS36947 Telecom Algeria	`13.94ms` from Valencia, ES
61.53.127.184	AS4837 CHINA UNICOM China169 Backbone	`3.99ms` from Zhengzhou, CN
165.154.51.40	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	`1.08ms` from Bangkok, TH
187.85.180.248	AS28343 UNIFIQUE TELECOMUNICACOES S/A	`3.36ms` from Curitiba, BR
70.112.82.136	AS11427 Charter Communications Inc	`5.10ms` from Dallas, US
113.186.82.184	AS45899 VNPT Corp	`4.92ms` from Hanoi, VN
95.92.161.232	AS2860 NOS COMUNICACOES, S.A.	`5.67ms` from Lisbon, PT
146.212.35.152	AS21283 A1 Slovenija telekomunikacijske storitve,d.d.	`0.95ms` from Ljubljana, SI
159.115.48.8	AS10294 Coast Community College District	`2.75ms` from Los Angeles, US
95.120.142.88	AS3352 TELEFONICA DE ESPANA S.A.U.	`5.43ms` from Madrid, ES
172.233.98.152	AS63949 Akamai Connected Cloud	`0.67ms` from Madrid, ES
45.126.211.8	AS23470 ReliableSite.Net LLC	`0.34ms` from Miami, US
95.246.73.216	AS3269 Telecom Italia S.p.A.	`5.91ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -f4 210.72.9.55

traceroute to 210.72.9.55 (210.72.9.55): 64 hops max, 52 byte packets

4 [AS4134] 218.2.56.225 2.311 ms

5 *

6 *

7 *

8 *

9 [AS7497] 159.226.253.161 9.081 ms

10 *

11 *

12 [AS7497] 210.72.9.55 10.387 ms

Measurement taken from

IPinfo ProbeNet in Huai'an, CN

On December 6th 2025

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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