210.72.30.0/23

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 210.72.30.0/23

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 no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
210.72.30.254	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.40ms` 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
198.82.230.55	AS1312 Virginia Polytechnic Institute and State Univ.	`6.39ms` from Ashburn, US
71.225.14.135	AS7922 Comcast Cable Communications, LLC	`8.31ms` from Ashburn, US
102.44.242.87	AS8452 TE-AS	`8.61ms` from Cairo, EG
24.14.238.39	AS7922 Comcast Cable Communications, LLC	`12.92ms` from Chicago, US
185.72.109.199	AS204103 Comms West Limited	`12.67ms` from Edinburgh, GB
82.17.61.215	AS5089 Virgin Media Limited	`10.09ms` from London, GB
90.253.240.167	AS5378 Vodafone Limited	`1.66ms` from Manchester, GB
134.0.174.167	AS28885 OmanTel NAP	`3.06ms` from Muscat, OM
167.20.22.231	AS21928 T-Mobile USA, Inc.	`18.64ms` from New York City, US
186.239.24.231	AS10429 TELEFÔNICA BRASIL S.A	`0.74ms` from Osasco, BR
54.160.180.151	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
24.87.222.7	AS6327 Shaw Communications	`5.85ms` from Seattle, US
23.64.122.151	AS20940 Akamai International B.V.	`0.12ms` from Singapore, SG
91.114.249.151	AS8447 A1 Telekom Austria AG	`1.11ms` from Vienna, AT
68.145.149.103	AS6327 Shaw Communications	`3.76ms` from Calgary, CA
186.68.207.39	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`1.65ms` from Guayaquil, EC
182.43.235.135	AS58519 Cloud Computing Corporation	`0.30ms` from Guiyang, CN
72.31.119.23	AS33363 Charter Communications, Inc	`1.76ms` from Orlando, US
40.74.208.103	AS8075 Microsoft Corporation	`0.26ms` from San Antonio, US
204.11.229.71	AS30640 Etheric Networks, Inc.	`0.40ms` from San Jose, US
66.123.95.151	AS7018 AT&T Enterprises, LLC	`4.11ms` from San Jose, US
64.65.234.87	AS7029 Windstream Communications LLC	`5.80ms` from Secaucus, US
65.99.174.7	AS12552 GlobalConnect AB	`2.50ms` from Stockholm, SE
163.17.200.135	AS1659 Taiwan Academic Network (TANet) Information Center	`2.33ms` from Taichung, TW
43.175.127.55	AS139341 ACE	`0.15ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f2 210.72.30.1

traceroute to 210.72.30.1 (210.72.30.1): 64 hops max, 52 byte packets

2 [AS23265] 206.126.16.197 2.306 ms

3 *

4 *

5 *

6 *

7 [AS6939] 184.105.64.129 138.582 ms

8 *

9 [AS7497] 159.226.254.214 144.131 ms

10 [AS7497] 159.226.254.229 177.548 ms

11 [AS7497] 159.226.254.237 173.031 ms

12 [AS7497] 159.226.254.98 176.443 ms

13 *

14 [AS7497] 210.72.30.1 193.698 ms

Measurement taken from

IPinfo ProbeNet in Walla Walla, US

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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