210.73.40.0/23

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

Overlapping Ranges

BGP prefixes that contain 210.73.40.0/23

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
210.73.128.0/19	AS4134	Wucheng District of Jinhua City huan cheng	8,192
210.73.64.0/19	AS18239	(CPIP)Beijing Information Highway Corp	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	AS4134	Beijing capitalonline data service co.,LTD	4,096
210.73.208.0/20	AS4808	Beijing capitalonline data service co.,LTD	4,096

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.73.40.186	mbkbase.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

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

IP Address	ASN	Details
210.73.41.88	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`2.98ms` from Beijing, CN
210.73.40.254	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.49ms` 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
89.109.16.7	AS12389 PJSC Rostelecom	`6.44ms` from Kazan, RU
91.203.114.103	AS25183 FREERIDE LLC	`4.23ms` from Kyiv, UA
86.166.235.39	AS2856 British Telecommunications PLC	`2.68ms` from London, GB
80.11.162.103	AS3215 Orange S.A.	`1.80ms` from Paris, FR
121.209.37.119	AS1221 Telstra Limited	`1.66ms` from Sydney, AU
52.12.226.231	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
87.155.54.55	AS3320 Deutsche Telekom AG	`3.52ms` from Duesseldorf, DE
3.70.80.103	AS16509 Amazon.com, Inc.	`0.19ms` from Frankfurt am Main, DE
88.152.247.39	AS3209 Vodafone GmbH	`6.50ms` from Frankfurt am Main, DE
120.27.251.103	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`5.71ms` from Hangzhou, CN
196.39.115.71	AS20011 Dimension Data	`1.18ms` from Johannesburg, ZA
213.221.231.151	AS15600 Quickline AG	`11.88ms` from Kloten, CH
43.159.114.55	AS139341 ACE	`0.12ms` from Madrid, ES
69.180.177.55	AS7922 Comcast Cable Communications, LLC	`5.47ms` from Minneapolis, US
83.159.2.87	AS12322 Free SAS	`7.58ms` from Paris, FR
189.250.241.231	AS8151 UNINET	`10.03ms` from Santiago de Queretaro, MX
150.158.88.135	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.34ms` from Shanghai, CN
110.153.191.87	AS4134 CHINANET-BACKBONE	`11.61ms` from UEruemqi, CN
13.82.124.247	AS8075 Microsoft Corporation	`0.46ms` from Ashburn, US
50.80.219.7	AS30036 Mediacom Communications Corp	`14.84ms` from Atlanta, US
106.74.20.71	AS133118 China Unicom IP network	`10.69ms` from Beijing, CN
35.209.39.183	AS15169 Google LLC	`0.11ms` from Council Bluffs, US
24.160.159.103	AS11427 Charter Communications Inc	`4.05ms` from Dallas, US
24.127.248.7	AS7922 Comcast Cable Communications, LLC	`10.01ms` from Flint, US
116.63.171.151	AS58519 Cloud Computing Corporation	`0.69ms` from Guiyang, CN

Traceroute

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

traceroute -a -n -q1 -f6 210.73.40.116

traceroute to 210.73.40.116 (210.73.40.116): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.130 5.703 ms

7 [AS7497] 159.226.254.97 4.696 ms

8 *

9 *

10 [AS7497] 210.73.40.116 24.705 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On January 19th 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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