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
210.72.128.1	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`13.79ms` 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
185.173.15.216	AS61349 MaxiTEL Telecom B.V.	`1.42ms` from Amsterdam, NL
140.235.21.168	AS6079 RCN	`2.67ms` from Ashburn, US
54.77.42.56	AS16509 Amazon.com, Inc.	`0.24ms` from Dublin, IE
114.67.168.200	AS58466 CHINANET Guangdong province network	`3.01ms` from Guangzhou, CN
101.62.213.168	AS210278 Sky Italia srl	`0.16ms` from Milan, IT
113.36.7.248	AS17506 ARTERIA Networks Corporation	`8.76ms` from Osaka, JP
186.10.75.8	AS27651 ENTEL CHILE S.A.	`1.07ms` from Santiago, CL
208.84.237.120	AS33131 INTRALINKS INC.	`1.78ms` from Secaucus, US
219.111.124.200	AS2497 Internet Initiative Japan Inc.	`3.54ms` from Tokyo, JP
27.139.126.152	AS9824 JCOM Co., Ltd.	`11.60ms` from Tokyo, JP
107.192.84.216	AS7018 AT&T Enterprises, LLC	`12.01ms` from Atlanta, US
4.153.237.200	AS8075 Microsoft Corporation	`0.23ms` from Boydton, US
184.14.5.216	AS5650 Frontier Communications of America, Inc.	`16.51ms` from Chicago, US
108.139.69.248	AS16509 Amazon.com, Inc.	`0.45ms` from Dubai, AE
74.162.179.104	AS8075 Microsoft Corporation	`0.93ms` from Dubai, AE
109.79.11.40	AS15502 Vodafone Ireland Limited	`2.85ms` from Dublin, IE
82.142.152.8	AS3216 PJSC "Vimpelcom"	`0.45ms` from Frankfurt am Main, DE
23.197.235.24	AS16625 Akamai Technologies, Inc.	`0.53ms` from Hong Kong, HK
86.144.191.88	AS2856 British Telecommunications PLC	`4.48ms` from London, GB
86.20.138.120	AS5089 Virgin Media Limited	`4.54ms` from London, GB
38.66.106.24	AS174 Cogent Communications, LLC	`0.73ms` from Los Angeles, US
91.92.3.8	AS210218 Open Fiber S.P.A.	`0.91ms` from Milan, IT
54.183.15.152	AS16509 Amazon.com, Inc.	`0.12ms` from San Jose, US
1.171.50.72	AS3462 Data Communication Business Group	`2.40ms` from Taipei, TW
13.93.70.168	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL

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] 103.2.211.128 5.014 ms

7 [AS7497] 159.226.254.89 4.322 ms

8 [AS7497] 159.226.254.146 4.919 ms

9 [AS7497] 159.226.253.194 16.1 ms

10 *

11 [AS7497] 210.72.128.43 15.131 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On December 28th 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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