210.72.26.0/23

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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
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:         [email protected]
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
nic-hdl:        AC2741-AP
remarks:        Generated from irt object IRT-CSTNET-CN
remarks:        [email protected] was validated on 2025-07-25
abuse-mailbox:  [email protected]
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:         [email protected]
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 [email protected] if you have any
remarks:        questions regarding this object.
remarks:        Antispam mail please send to [email protected].
notify:         [email protected]
mnt-by:         MAINT-CSTNET-CN
last-modified:  2023-10-06T05:09:22Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.72.26.0/23

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 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
210.72.27.80	airscan.top	1
210.72.26.47	tgenviron.org	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

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

IP Address	ASN	Details
210.72.27.135	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.86ms` from Beijing, CN
210.72.26.248	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.91ms` 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
158.106.131.151	AS63410 PrivateSystems Networks	`0.38ms` from Atlanta, US
87.160.144.215	AS3320 Deutsche Telekom AG	`4.92ms` from Duesseldorf, DE
209.38.203.151	AS14061 DigitalOcean, LLC	`0.26ms` from Frankfurt am Main, DE
54.93.102.7	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
119.29.239.199	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.00ms` from Guangzhou, CN
177.85.89.55	AS262773 PROXXIMA TELECOMUNICACOES SA	`9.61ms` from Joao Pessoa, BR
41.25.220.55	AS36994 Vodacom	`2.65ms` from Johannesburg, ZA
217.39.34.151	AS2856 British Telecommunications PLC	`3.16ms` from London, GB
143.159.111.103	AS6871 Plusnet	`3.89ms` from London, GB
174.161.14.167	AS7922 Comcast Cable Communications, LLC	`13.90ms` from Murfreesboro, US
69.141.47.119	AS7922 Comcast Cable Communications, LLC	`5.41ms` from New York City, US
136.36.117.7	AS16591 Google Fiber Inc.	`1.40ms` from Salt Lake City, US
42.178.164.167	AS4837 CHINA UNICOM China169 Backbone	`9.82ms` from Tieling, CN
54.95.175.247	AS16509 Amazon.com, Inc.	`0.22ms` from Tokyo, JP
41.225.192.23	AS37671 3S INF	`1.99ms` from Tunis, TN
120.71.6.119	AS4134 CHINANET-BACKBONE	`1.93ms` from UEruemqi, CN
89.77.125.135	AS9141 P4 Sp. z o.o.	`8.54ms` from Warsaw, PL
104.211.8.23	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
34.76.134.247	AS396982 Google LLC	`0.17ms` from Brussels, BE
73.44.1.23	AS7922 Comcast Cable Communications, LLC	`5.31ms` from Chicago, US
216.174.151.55	AS803 Saskatchewan Telecommunications	`19.20ms` from Des Moines, US
90.11.196.119	AS3215 Orange S.A.	`4.24ms` from Frankfurt am Main, DE
98.211.138.39	AS7922 Comcast Cable Communications, LLC	`7.60ms` from Miami, US
52.4.247.23	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
125.150.71.55	AS4766 Korea Telecom	`1.56ms` 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 -f6 210.72.27.135

traceroute to 210.72.27.135 (210.72.27.135): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.130 5 ms

7 [AS7497] 159.226.254.93 4.698 ms

8 *

9 [AS7497] 210.72.27.135 3.408 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On January 30th 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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