210.73.54.0/23

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 210.73.54.0/23

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

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

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

IP Address	ASN	Details
210.73.55.9	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`1.48ms` from Beijing, CN
210.73.54.8	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.18ms` 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
3.85.43.119	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
34.249.193.119	AS16509 Amazon.com, Inc.	`0.29ms` from Dublin, IE
47.76.91.151	AS45102 Alibaba (US) Technology Co., Ltd.	`0.89ms` from Hong Kong, HK
73.136.248.183	AS7922 Comcast Cable Communications, LLC	`7.36ms` from Houston, US
147.139.129.55	AS45102 Alibaba (US) Technology Co., Ltd.	`0.29ms` from Jakarta, ID
62.202.29.247	AS3303 Swisscom (Switzerland) Ltd	`1.09ms` from Lausanne, CH
176.136.118.215	AS5410 Bouygues Telecom SA	`5.78ms` from Marseille, FR
132.148.5.215	AS26496 GoDaddy.com, LLC	`0.91ms` from Phoenix, US
183.107.158.7	AS4766 Korea Telecom	`4.60ms` from Seoul, KR
117.82.137.39	AS4134 CHINANET-BACKBONE	`6.23ms` from Shanghai, CN
120.154.58.23	AS1221 Telstra Limited	`12.73ms` from Sydney, AU
99.238.239.199	AS812 Rogers Communications Canada Inc.	`3.11ms` from Toronto, CA
95.101.229.55	AS20940 Akamai International B.V.	`4.32ms` from Zuerich, CH
75.4.117.39	AS7018 AT&T Enterprises, LLC	`14.20ms` from Atlanta, US
14.98.38.55	AS45820 Tata Teleservices ISP AS	`0.70ms` from Chennai, IN
67.213.119.231	AS262287 Latitude.sh LTDA	`0.78ms` from Chicago, US
34.71.253.167	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
49.205.175.71	AS18209 Atria Convergence Technologies Ltd.,	`0.60ms` from Delhi, IN
37.209.75.119	AS3209 Vodafone GmbH	`7.78ms` from Frankfurt am Main, DE
154.195.166.55	AS62240 Clouvider	`0.24ms` from Frankfurt am Main, DE
125.91.107.167	AS4134 CHINANET-BACKBONE	`1.93ms` from Guangzhou, CN
196.39.51.39	AS20011 Dimension Data	`0.89ms` from Johannesburg, ZA
38.55.18.39	AS8796 FASTNET DATA INC	`0.30ms` from Los Angeles, US
88.30.243.39	AS3352 TELEFONICA DE ESPANA S.A.U.	`13.20ms` from Madrid, ES
60.185.180.135	AS4134 CHINANET-BACKBONE	`5.60ms` 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 210.73.55.2

traceroute to 210.73.55.2 (210.73.55.2): 64 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 1.71 ms

2 *

3 [AS3491] 63.220.66.128 55.128 ms

4 [AS3491] 63.220.198.25 55.188 ms

5 [AS7497] 159.226.254.229 87.818 ms

6 [AS7497] 159.226.254.65 87.794 ms

7 [AS7497] 159.226.254.94 87.294 ms

8 [AS7497] 210.73.55.2 86.944 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

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.

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