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
210.72.238.0/24	AS9814	bei jing zhao shuang co.,ltd	256

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
210.72.9.5	siom.ac.cn	2
210.72.9.160	optics.org.cn	1
210.72.9.178	optics.sh.cn	1
210.72.9.158	sglf.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

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)	`5.05ms` 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
157.187.109.232	AS668 United States Department of Defense (DoD)	`2.72ms` from Ashburn, US
170.185.21.24	AS11686 Zayo Bandwidth	`17.48ms` from Atlanta, US
23.50.52.200	AS20940 Akamai International B.V.	`0.95ms` from Chicago, US
164.132.203.136	AS16276 OVH SAS	`0.10ms` from Gravelines, FR
66.229.204.56	AS7922 Comcast Cable Communications, LLC	`5.03ms` from Miami, US
67.4.236.248	AS209 CenturyLink Communications, LLC	`1.05ms` from Minneapolis, US
89.222.254.40	AS34123 Netorn LLC	`1.06ms` from Moscow, RU
38.80.192.40	AS174 Cogent Communications, LLC	`4.57ms` from San Jose, US
64.25.140.216	AS21947 Blackfoot Telephone Cooperative, Inc.	`13.98ms` from Seattle, US
146.88.21.200	AS45763 Opticomm Co Pty Ltd	`3.09ms` from Sydney, AU
210.139.239.232	AS2527 Sony Network Communications Inc.	`1.97ms` from Tokyo, JP
116.209.125.200	AS4134 CHINANET-BACKBONE	`5.63ms` from Wuhan, CN
54.75.200.216	AS16509 Amazon.com, Inc.	`0.32ms` from Dublin, IE
217.225.57.216	AS3320 Deutsche Telekom AG	`4.89ms` from Frankfurt am Main, DE
223.16.150.136	AS9304 HGC Global Communications Limited	`1.25ms` from Hong Kong, HK
23.199.150.248	AS16625 Akamai Technologies, Inc.	`0.23ms` from Kuala Lumpur, MY
188.62.181.104	AS3303 Swisscom (Switzerland) Ltd	`0.72ms` from Lausanne, CH
64.5.65.136	AS32867 Long Lines Internet	`7.82ms` from Lincoln, US
185.7.166.72	AS199448 Babble Cloud Holdings Ltd.	`16.12ms` from London, GB
34.39.19.168	AS396982 Google LLC	`0.10ms` from London, GB
98.7.79.136	AS12271 Charter Communications Inc	`3.12ms` from New York City, US
34.228.229.104	AS14618 Amazon.com, Inc.	`0.57ms` from Reston, US
108.147.90.120	AS7018 AT&T Enterprises, LLC	`2.63ms` from San Jose, US
104.42.130.24	AS8075 Microsoft Corporation	`0.57ms` from San Jose, US
1.97.8.24	AS4766 Korea Telecom	`1.19ms` from Seoul, KR

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 1.761 ms

5 *

6 *

7 *

8 [AS4134] 202.97.44.130 7.866 ms

9 [AS7497] 159.226.253.161 12.082 ms

10 *

11 *

12 [AS7497] 210.72.9.55 12.321 ms

Measurement taken from

IPinfo ProbeNet in Huai'an, CN

On January 19th 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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