210.72.80.0/22

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 210.72.80.0/22

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

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

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

IP Address	ASN	Details
210.72.81.165	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`27.50ms` from Beijing, CN
210.72.82.115	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`28.90ms` from Beijing, CN
210.72.80.156	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`29.55ms` 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
143.176.149.86	AS13127 Odido Netherlands B.V.	`7.10ms` from Amsterdam, NL
158.108.64.54	AS9411 Kasetsart University, Thailand	`0.93ms` from Bangkok, TH
51.0.142.86	AS16509 Amazon.com, Inc.	`0.90ms` from Berlin, DE
165.173.180.6	AS2639 ZOHO	`0.65ms` from Dallas, US
14.235.126.214	AS45899 VNPT Corp	`5.17ms` from Hanoi, VN
209.137.187.6	AS9304 HGC Global Communications Limited	`2.34ms` from Hong Kong, HK
74.91.26.38	AS33387 Nocix, LLC	`0.17ms` from Kansas City, US
4.226.17.102	AS8075 Microsoft Corporation	`0.20ms` from Kloten, CH
47.137.26.214	AS5650 Frontier Communications of America, Inc.	`7.08ms` from Los Angeles, US
99.106.129.230	AS7018 AT&T Enterprises, LLC	`3.15ms` from Los Angeles, US
96.91.31.6	AS7922 Comcast Cable Communications, LLC	`6.03ms` from Murfreesboro, US
118.106.24.6	AS18126 Chubu Telecommunications Company, Inc.	`4.32ms` from Osaka, JP
118.17.151.198	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.89ms` from Osaka, JP
153.227.14.150	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.31ms` from Osaka, JP
52.65.153.214	AS16509 Amazon.com, Inc.	`0.14ms` from Sydney, AU
115.59.31.54	AS4837 CHINA UNICOM China169 Backbone	`4.94ms` from Zhengzhou, CN
123.4.252.230	AS4837 CHINA UNICOM China169 Backbone	`5.71ms` from Zhengzhou, CN
160.242.0.182	AS33763 Paratus Telecommunications Limited	`7.00ms` from Amsterdam, NL
36.78.89.86	AS7713 PT Telekomunikasi Indonesia	`10.35ms` from Batam, ID
82.150.48.54	AS8990 4iG Telecommunications Holding Zrt	`0.84ms` from Budapest, HU
74.219.226.230	AS10796 Charter Communications Inc	`2.78ms` from Columbus, US
222.220.96.6	AS4134 CHINANET-BACKBONE	`9.43ms` from Kunming, CN
34.39.90.166	AS396982 Google LLC	`0.13ms` from London, GB
97.167.156.54	AS6167 Verizon Business	`7.11ms` from Los Angeles, US
86.248.159.246	AS3215 Orange S.A.	`3.85ms` from Lyon, FR

Traceroute

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

traceroute -a -n -q1 -f6 210.72.81.169

traceroute to 210.72.81.169 (210.72.81.169): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.130 5.221 ms

7 [AS7497] 159.226.254.93 10.219 ms

8 [AS7497] 159.226.254.142 5.004 ms

9 [AS7497] 159.226.253.102 29.779 ms

10 *

11 [AS7497] 210.72.81.169 29.072 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

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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