210.77.24.0/23

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:         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:          210.77.0.0/19
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 210.77.24.0/23

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

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

IP Address	ASN	Details
210.77.24.254	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.88ms` 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
75.182.113.119	AS11426 Charter Communications Inc	`11.92ms` from Ashburn, US
114.254.230.151	AS4808 China Unicom Beijing Province Network	`3.97ms` from Beijing, CN
47.118.21.23	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.26ms` from Hangzhou, CN
209.101.119.55	AS401783 TOKALA COMMUNICATIONS INC.	`1.75ms` from Jakarta, ID
70.55.71.23	AS577 Bell Canada	`3.35ms` from Montreal, CA
110.72.60.87	AS4837 CHINA UNICOM China169 Backbone	`15.03ms` from Nanning, CN
126.59.242.7	AS17676 SoftBank Corp.	`3.38ms` from Osaka, JP
66.194.68.151	AS3549 Level 3 Parent, LLC	`0.88ms` from Seattle, US
49.60.8.7	AS4766 Korea Telecom	`5.20ms` from Seoul, KR
175.238.146.55	AS4766 Korea Telecom	`1.92ms` from Seoul, KR
73.241.26.199	AS7922 Comcast Cable Communications, LLC	`2.13ms` from Fremont, US
106.52.97.199	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.01ms` from Guangzhou, CN
138.186.48.7	AS263858 RS NET EIRELI ME	`3.50ms` from Osasco, BR
13.218.66.247	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
104.209.40.71	AS8075 Microsoft Corporation	`0.58ms` from San Jose, US
124.197.126.167	AS4773 MobileOne Ltd. Mobile/Internet Service Provider Singapore	`2.61ms` from Singapore, SG
86.104.201.23	AS1653 Vetenskapsradet / SUNET	`0.70ms` from Stockholm, SE
81.228.121.119	AS3301 Telia Company AB	`0.48ms` from Stockholm, SE
111.249.227.247	AS3462 Data Communication Business Group	`1.12ms` from Taipei, TW
95.63.130.231	AS12430 VODAFONE ESPANA S.A.U.	`4.25ms` from Barcelona, ES
121.25.63.135	AS4837 CHINA UNICOM China169 Backbone	`9.15ms` from Beijing, CN
172.225.238.119	AS36183 Akamai Technologies, Inc.	`0.17ms` from Bogota, CO
102.115.215.87	AS23889 Mauritius Telecom Ltd	`4.41ms` from Ebene, MU
92.138.38.231	AS3215 Orange S.A.	`9.39ms` from Frankfurt am Main, DE
196.34.137.167	AS3741 Dimension Data	`1.04ms` from Johannesburg, ZA

Traceroute

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

traceroute -a -n -q1 -f6 210.77.24.254

traceroute to 210.77.24.254 (210.77.24.254): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.130 5.238 ms

7 [AS7497] 159.226.254.97 5.003 ms

8 *

9 *

10 *

11 [AS7497] 210.77.16.112 4.232 ms

12 *

13 [AS7497] 210.77.24.254 4.632 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.

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