210.77.22.0/23

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	210.77.0.0/19
Registry	APNIC
ID	CSTNET-CN

WHOIS Details

inetnum:        210.77.0.0 - 210.77.31.255
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:  2023-10-10T01:38:39Z
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:          210.77.0.0/19
descr:          China Science & Technology Network
country:        CN
origin:         AS7497
mnt-by:         MAINT-CSTNET-CN
last-modified:  2023-10-06T05:09:24Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.77.22.0/23

Range	ASN	Company	Num of IPs
210.77.0.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192

Nearby Ranges

BGP prefixes that overlap with 210.77.0.0/16

Range	ASN	Company	Num of IPs
210.77.0.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192
210.77.128.0/19	AS23724	21ViaNet(China),Inc.	8,192
210.77.192.0/19	AS4808	China Broadcasting Shandong Network Co., Ltd. Jinan Branch	8,192
210.77.224.0/19	AS4808	China Great Wall Network	8,192
210.77.64.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	8,192
210.77.176.0/20	AS18241	State Power Information Net	4,096
210.77.176.0/20	AS9814	State Power Information Net	4,096
210.77.154.0/24	AS4835	Full Link (China),Inc.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
210.77.23.94	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`6.36ms` from Beijing, CN
210.77.22.1	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.39ms` 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
23.207.138.39	AS16625 Akamai Technologies, Inc.	`0.18ms` from Ashburn, US
67.191.181.103	AS7922 Comcast Cable Communications, LLC	`4.44ms` from Atlanta, US
52.222.51.7	AS8987 Amazon Data Services Ireland Ltd	`0.32ms` from Boardman, US
71.65.254.87	AS11426 Charter Communications Inc	`11.39ms` from Charlotte, US
73.45.83.151	AS7922 Comcast Cable Communications, LLC	`6.86ms` from Chicago, US
20.33.40.39	AS8069 Microsoft Corporation	`0.21ms` from Dublin, IE
183.240.227.7	AS56040 China Mobile communications corporation	`1.17ms` from Guangzhou, CN
154.23.151.39	AS140224 Nebula Global LLC	`0.76ms` from Hong Kong, HK
18.160.162.167	AS16509 Amazon.com, Inc.	`0.10ms` from Houston, US
78.189.148.247	AS9121 Turk Telekomunikasyon Anonim Sirketi	`1.91ms` from Istanbul, TR
203.46.186.167	AS1221 Telstra Limited	`1.48ms` from Melbourne, AU
94.167.173.183	AS1267 WIND TRE S.P.A.	`11.48ms` from Milan, IT
141.155.163.23	AS701 Verizon Business	`2.16ms` from New York City, US
4.190.221.7	AS8075 Microsoft Corporation	`0.17ms` from Osaka, JP
89.178.76.199	AS8402 PJSC "Vimpelcom"	`5.08ms` from Yekaterinburg, RU
77.49.196.215	AS1241 Forthnet	`1.97ms` from Athens, GR
52.10.143.87	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
85.96.126.215	AS9121 Turk Telekomunikasyon Anonim Sirketi	`13.16ms` from Bursa, TR
95.145.35.87	AS2856 British Telecommunications PLC	`5.64ms` from London, GB
104.92.146.135	AS16625 Akamai Technologies, Inc.	`0.70ms` from Osaka, JP
126.108.78.215	AS17676 SoftBank Corp.	`2.29ms` from Osaka, JP
179.95.155.23	AS18881 TELEFÔNICA BRASIL S.A	`3.04ms` from Osasco, BR
18.142.5.7	AS16509 Amazon.com, Inc.	`0.11ms` from Singapore, SG
52.252.66.87	AS8075 Microsoft Corporation	`0.21ms` from Boydton, US
160.160.144.103	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.30ms` from Casablanca, MA

Traceroute

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

traceroute -a -n -q1 210.77.23.30

traceroute to 210.77.23.30 (210.77.23.30): 64 hops max, 52 byte packets

1 [AS749] 11.236.88.22 1 ms

2 [AS749] 11.73.45.41 0.75 ms

3 [AS749] 11.73.14.17 0.676 ms

4 *

5 *

6 *

7 *

8 *

9 [AS7497] 103.2.211.132 5.061 ms

10 [AS7497] 159.226.254.85 6.269 ms

11 *

12 *

13 *

14 [AS7497] 210.77.16.77 5.601 ms

15 *

16 [AS7497] 210.77.23.30 52.771 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On January 30th 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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