210.73.2.0/23

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	210.73.0.0/18
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inetnum:        210.73.0.0 - 210.73.63.255
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:          210.73.0.0/18
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:  2023-10-06T05:09:23Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.73.2.0/23

Range	ASN	Company	Num of IPs
210.73.0.0/18	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	16,384

Nearby Ranges

BGP prefixes that overlap with 210.73.0.0/16

Range	ASN	Company	Num of IPs
210.73.0.0/18	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	16,384
210.73.64.0/19	AS18239	(CPIP)Beijing Information Highway Corp	8,192
210.73.128.0/19	AS4134	Wucheng District of Jinhua City huan cheng	8,192
210.73.160.0/19	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	8,192
210.73.224.0/19	AS4808	Shanghai Hongmao Information Technology Co. Ltd	8,192
210.73.208.0/20	AS4808	Beijing capitalonline data service co.,LTD	4,096

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

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

IP Address	ASN	Details
210.73.2.240	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`1.39ms` from Beijing, CN
210.73.3.136	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`1.72ms` 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
85.17.205.71	AS60781 LeaseWeb Netherlands B.V.	`0.25ms` from Amsterdam, NL
98.71.233.151	AS8075 Microsoft Corporation	`1.36ms` from Amsterdam, NL
57.153.162.231	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
47.160.98.23	AS5650 Frontier Communications of America, Inc.	`7.27ms` from Dallas, US
51.7.168.247	AS6871 Plusnet	`7.09ms` from Erith, GB
103.170.22.23	AS141123 PT Puskomedia Indonesia Kreatif	`1.43ms` from Jakarta, ID
176.224.77.231	AS35819 Etihad Etisalat, a joint stock company	`4.29ms` from Jeddah, SA
99.172.169.183	AS7018 AT&T Enterprises, LLC	`13.39ms` from Kansas City, US
85.59.117.87	AS12479 Orange Espagne SA	`11.07ms` from Madrid, ES
75.226.108.39	AS6167 Verizon Business	`10.77ms` from Santa Clara, US
183.135.8.87	AS4134 CHINANET-BACKBONE	`13.03ms` from Shanghai, CN
119.15.71.103	AS23854 NINE ENTERTAINMENT CO. PTY LTD	`0.23ms` from Sydney, AU
114.24.134.231	AS3462 Data Communication Business Group	`1.27ms` from Taipei, TW
116.198.65.199	AS23724 IDC, China Telecommunications Corporation	`3.61ms` from Tianjin, CN
99.228.247.199	AS812 Rogers Communications Canada Inc.	`3.94ms` from Toronto, CA
106.46.40.231	AS4134 CHINANET-BACKBONE	`4.42ms` from Zhengzhou, CN
23.50.106.119	AS16625 Akamai Technologies, Inc.	`0.33ms` from Zuerich, CH
85.1.121.151	AS3303 Swisscom (Switzerland) Ltd	`1.41ms` from Zuerich, CH
46.176.249.7	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`1.27ms` from Athens, GR
52.27.137.247	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
3.77.125.103	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
115.73.179.231	AS7552 Viettel Group	`1.11ms` from Ho Chi Minh City, VN
147.46.135.55	AS9488 Seoul National University	`1.06ms` from Incheon, KR
73.94.89.87	AS7922 Comcast Cable Communications, LLC	`7.92ms` from Minneapolis, US
13.234.3.23	AS16509 Amazon.com, Inc.	`0.15ms` from Mumbai, IN

Traceroute

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

traceroute -a -n -q1 -f7 210.73.2.17

traceroute to 210.73.2.17 (210.73.2.17): 64 hops max, 52 byte packets

7 [AS3491] 63.220.198.25 53.791 ms

8 [AS7497] 159.226.254.229 86.225 ms

9 [AS7497] 159.226.254.65 91.531 ms

10 [AS7497] 159.226.254.94 89.524 ms

11 [AS7497] 159.226.254.54 85.913 ms

12 *

13 [AS7497] 210.73.2.17 86.195 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 31st 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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