210.72.128.0/24

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	210.72.128.0/19
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inetnum:        210.72.128.0 - 210.72.159.255
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:          210.72.128.0/19
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:  2023-10-06T05:09:23Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.72.128.0/24

Range	ASN	Company	Num of IPs
210.72.128.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192

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
210.72.128.101	sipsys.com	1
210.72.128.46	sict.ac.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

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

IP Address	ASN	Details
210.72.128.43	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`14.77ms` 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
122.178.81.248	AS24560 Bharti Airtel Ltd., Telemedia Services	`11.02ms` from Chennai, IN
168.216.112.8	AS7925 West Virginia Network for Educational Telecomputing	`16.34ms` from Chicago, US
177.128.237.232	AS28621 NetOeste Telecomunicações Ltda	`11.74ms` from Curitiba, BR
217.252.22.168	AS3320 Deutsche Telekom AG	`3.46ms` from Duesseldorf, DE
24.76.245.104	AS6327 Shaw Communications	`19.79ms` from Edmonton, CA
93.255.171.200	AS3320 Deutsche Telekom AG	`14.16ms` from Frankfurt am Main, DE
83.49.220.232	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.08ms` from Madrid, ES
85.71.40.88	AS5610 O2 Czech Republic, a.s.	`8.30ms` from Prague, CZ
175.205.35.104	AS4766 Korea Telecom	`2.54ms` from Seoul, KR
116.213.2.8	AS139337 Ozhosting.com Pty Ltd	`0.81ms` from Sydney, AU
191.54.76.88	AS53006 ALGAR TELECOM S/A	`5.88ms` from Uberlandia, BR
220.158.213.8	AS133075 Telesmart Limited	`0.47ms` from Auckland, NZ
107.10.153.104	AS10796 Charter Communications Inc	`9.53ms` from Columbus, US
37.80.222.40	AS3320 Deutsche Telekom AG	`16.36ms` from Frankfurt am Main, DE
162.19.49.24	AS16276 OVH SAS	`0.09ms` from Gravelines, FR
98.199.148.24	AS7922 Comcast Cable Communications, LLC	`8.02ms` from Houston, US
115.135.232.152	AS4788 TM TECHNOLOGY SERVICES SDN. BHD.	`2.21ms` from Kuala Lumpur, MY
82.37.157.8	AS5089 Virgin Media Limited	`13.97ms` from London, GB
80.44.62.8	AS13285 TalkTalk Communications Limited	`2.62ms` from Manchester, GB
177.255.186.216	AS27831 Colombia Móvil	`7.31ms` from Medellin, CO
18.102.8.136	AS16509 Amazon.com, Inc.	`0.16ms` from Milan, IT
112.122.51.104	AS4837 CHINA UNICOM China169 Backbone	`10.26ms` from Nanjing, CN
188.243.58.40	AS35807 SkyNet Ltd.	`0.62ms` from Saint Petersburg, RU
141.237.106.120	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`4.91ms` from Sofia, BG
71.10.191.152	AS20115 Charter Communications LLC	`3.07ms` from St. Louis, 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 210.72.128.43

traceroute to 210.72.128.43 (210.72.128.43): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.130 4.423 ms

7 [AS7497] 159.226.254.97 4.221 ms

8 [AS7497] 159.226.254.146 4.384 ms

9 [AS7497] 159.226.253.194 15.577 ms

10 *

11 [AS7497] 210.72.128.43 15.505 ms

Measurement taken from

IPinfo ProbeNet in Beijing, 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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