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:         [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 210.72.30.0/23

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)	`1.44ms` 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
118.247.49.231	AS4847 China Networks Inter-Exchange	`5.20ms` from Beijing, CN
197.50.169.39	AS8452 TE-AS	`5.66ms` from Cairo, EG
153.0.29.183	AS4837 CHINA UNICOM China169 Backbone	`16.84ms` from Guangzhou, CN
123.21.147.199	AS45899 VNPT Corp	`1.65ms` from Ho Chi Minh City, VN
98.195.175.167	AS7922 Comcast Cable Communications, LLC	`7.11ms` from Houston, US
46.234.16.199	AS60093 Bupa Acibadem Sigorta A.S.	`3.26ms` from Istanbul, TR
180.252.147.71	AS7713 PT Telekomunikasi Indonesia	`1.79ms` from Jakarta, ID
144.139.90.7	AS1221 Telstra Limited	`2.01ms` from Melbourne, AU
193.41.7.199	AS15923 Logos S.P.A.	`4.47ms` from Milan, IT
133.1.142.39	AS4730 Osaka University	`1.57ms` from Osaka, JP
89.23.8.55	AS47438 Pskovline Ltd.	`5.10ms` from Saint Petersburg, RU
115.136.191.23	AS17858 LG POWERCOMM	`2.10ms` from Seoul, KR
115.5.172.103	AS4766 Korea Telecom	`1.55ms` from Seoul, KR
82.173.164.231	AS13127 Odido Netherlands B.V.	`16.31ms` from Amsterdam, NL
70.186.222.7	AS22773 Cox Communications Inc.	`9.16ms` from Ashburn, US
52.42.15.71	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
81.245.81.103	AS5432 Proximus NV	`1.13ms` from Brussels, BE
24.252.91.103	AS22773 Cox Communications Inc.	`15.34ms` from Dallas, US
39.119.240.7	AS9318 SK Broadband Co Ltd	`4.30ms` from Incheon, KR
195.23.184.103	AS1897 NOS COMUNICACOES, S.A.	`2.02ms` from Lisbon, PT
86.8.65.151	AS5089 Virgin Media Limited	`8.39ms` from London, GB
82.8.22.23	AS5089 Virgin Media Limited	`6.87ms` from London, GB
105.168.210.167	AS37119 UNITEL SA	`0.81ms` from Luanda, AO
15.216.107.247	AS16509 Amazon.com, Inc.	`5.83ms` from Madrid, ES
183.150.198.39	AS4134 CHINANET-BACKBONE	`8.55ms` from Ningbo, CN

Traceroute

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

traceroute -a -n -q1 -f4 -m11 210.72.31.65

traceroute to 210.72.31.65 (210.72.31.65): 11 hops max, 52 byte packets

4 [AS174] 154.54.94.113 153.446 ms

5 [AS174] 154.18.9.165 159.93 ms

6 [AS7497] 159.226.254.229 179.581 ms

7 [AS7497] 159.226.254.65 191.786 ms

8 [AS7497] 159.226.254.94 193.041 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

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.

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