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Summary

Country	China
Domain	cnic.cn
ASN	AS7497
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inet6num:       2400:dd00::/28
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:  2023-10-09T03:47:49Z
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

route6:         2400:dd00::/28
descr:          CHINA SCIENCE AND TECHNOLOGY NETWORK
country:        CN
origin:         AS7497
notify:         [email protected]
mnt-by:         MAINT-CSTNET-CN
last-modified:  2023-10-06T05:09:27Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 2400:dd0b:1004::/48

No nearby ranges found.

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
181.121.53.96	AS23201 Telecel S.A.	`8.17ms` from Asuncion, PY
121.17.48.80	AS4837 CHINA UNICOM China169 Backbone	`10.98ms` from Beijing, CN
34.217.245.240	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
84.2.243.192	AS5483 Magyar Telekom Plc.	`4.73ms` from Budapest, HU
209.93.25.224	AS6871 Plusnet	`4.04ms` from London, GB
75.66.50.240	AS7922 Comcast Cable Communications, LLC	`14.84ms` from Atlanta, US
2.81.26.112	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`3.98ms` from Braga, PT
70.37.154.240	AS8075 Microsoft Corporation	`3.31ms` from Denver, US
52.49.129.96	AS16509 Amazon.com, Inc.	`0.25ms` from Dublin, IE
204.25.192.0	AS401307 Michigan Statewide Educational Network	`0.68ms` from Grand Rapids, US
182.186.182.16	AS17557 Pakistan Telecommunication Company Limited	`9.18ms` from Islamabad, PK
65.70.90.16	AS7018 AT&T Enterprises, LLC	`4.53ms` from Kansas City, US
116.94.86.160	AS7679 QTnet,Inc.	`9.50ms` from Osaka, JP
82.63.231.0	AS3269 Telecom Italia S.p.A.	`3.63ms` from Rome, IT
189.147.46.224	AS8151 UNINET	`3.84ms` from Santiago de Queretaro, MX
90.240.84.32	AS5378 Vodafone Limited	`8.76ms` from Edinburgh, GB
16.78.87.80	AS16509 Amazon.com, Inc.	`0.11ms` from Jakarta, ID
90.248.145.128	AS5378 Vodafone Limited	`3.86ms` from London, GB
158.62.219.192	AS397630 Blazing SEO, LLC	`0.71ms` from Los Angeles, US
178.70.147.16	AS12389 PJSC Rostelecom	`1.09ms` from Saint Petersburg, RU
13.73.240.240	AS8075 Microsoft Corporation	`0.70ms` from San Antonio, US
75.111.54.96	AS19108 Optimum	`10.06ms` from San Jose, US
46.9.147.224	AS2119 Telenor Norge AS	`6.74ms` from Sandefjord, NO
52.237.243.144	AS8075 Microsoft Corporation	`0.72ms` from Sydney, AU
20.222.102.192	AS8075 Microsoft Corporation	`0.17ms` from Tokyo, JP

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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