210.72.74.0/24

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 210.72.74.0/24

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

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

IP Address	ASN	Details
210.72.74.6	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`22.20ms` 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
94.21.32.168	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`1.36ms` from Budapest, HU
3.121.44.152	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
217.251.185.152	AS3320 Deutsche Telekom AG	`5.08ms` from Frankfurt am Main, DE
81.141.30.168	AS2856 British Telecommunications PLC	`2.88ms` from London, GB
51.190.11.248	AS5607 Sky UK Limited	`6.61ms` from London, GB
79.150.87.184	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.88ms` from Madrid, ES
118.17.184.216	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.25ms` from Osaka, JP
90.2.9.104	AS3215 Orange S.A.	`15.53ms` from Paris, FR
114.213.160.168	AS4538 China Education and Research Network Center	`14.44ms` from Shanghai, CN
36.9.169.56	AS2516 KDDI CORPORATION	`17.16ms` from Tokyo, JP
131.130.31.8	AS760 Vienna University Computer Center	`0.89ms` from Vienna, AT
31.20.111.88	AS50266 Odido Netherlands B.V.	`2.56ms` from Amsterdam, NL
73.219.53.200	AS7922 Comcast Cable Communications, LLC	`12.30ms` from Boston, US
84.90.33.88	AS13156 NOWO COMMUNICATIONS, S.A.	`10.69ms` from Braga, PT
75.117.210.248	AS7029 Windstream Communications LLC	`14.55ms` from Chicago, US
84.182.36.8	AS3320 Deutsche Telekom AG	`2.89ms` from Duesseldorf, DE
155.212.42.56	AS48031 Ivanov Vitaliy Sergeevich	`0.12ms` from Kyiv, UA
92.71.140.152	AS41354 ITS Technology Group Limited	`0.51ms` from Manchester, GB
95.250.247.168	AS3269 Telecom Italia S.p.A.	`1.79ms` from Milan, IT
117.53.137.168	AS17551 Anycast Global Backbone	`0.95ms` from Perth, AU
122.114.240.24	AS4837 CHINA UNICOM China169 Backbone	`0.40ms` from Zhengzhou, CN
47.38.91.104	AS20115 Charter Communications LLC	`10.49ms` from Atlanta, US
109.104.41.136	AS16097 HL komm Telekommunikations GmbH	`4.20ms` from Berlin, DE
172.77.216.200	AS5650 Frontier Communications of America, Inc.	`11.73ms` from Chicago, US
86.46.108.40	AS5466 Eircom Limited	`5.16ms` from Dublin, IE

Traceroute

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

traceroute -a -n -q1 -f5 210.72.74.201

traceroute to 210.72.74.201 (210.72.74.201): 64 hops max, 52 byte packets

5 [AS4837] 221.7.19.97 0.885 ms

6 *

7 *

8 *

9 [AS4837] 219.158.5.118 52.744 ms

10 [AS4837] 219.158.33.150 103.598 ms

11 *

12 [AS7497] 159.226.254.142 53.908 ms

13 *

14 *

15 [AS7497] 210.72.74.201 128.425 ms

Measurement taken from

IPinfo ProbeNet in Hami, 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.

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