210.77.8.0/21

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 210.77.8.0/21

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

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

IP Address	ASN	Details
210.77.10.80	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`5.42ms` 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
52.177.33.149	AS8075 Microsoft Corporation	`0.15ms` from Boydton, US
147.185.34.85	AS398962 CONTROLD INC.	`0.10ms` from Buenos Aires, AR
109.79.116.117	AS15502 Vodafone Ireland Limited	`4.62ms` from Dublin, IE
31.104.94.197	AS2856 British Telecommunications PLC	`4.77ms` from Erith, GB
90.196.75.5	AS5607 Sky UK Limited	`2.41ms` from Erith, GB
38.90.4.229	AS138571 SUPERCLOUDS LIMITED	`1.67ms` from Hong Kong, HK
102.222.112.5	AS328719 Wired Tech Pty Ltd	`0.10ms` from Johannesburg, ZA
66.172.215.213	AS32867 Long Lines Internet	`4.36ms` from Lincoln, US
206.41.118.21	AS33211 RisingNet, LLC	`1.14ms` from Los Angeles, US
212.45.18.181	AS8732 JSC Comcor	`0.59ms` from Moscow, RU
58.5.29.69	AS17506 ARTERIA Networks Corporation	`1.45ms` from Osaka, JP
34.190.181.181	AS15169 Google LLC	`0.14ms` from Paris, FR
185.163.63.245	AS60032 Coriolis Telecom SAS	`2.88ms` from Paris, FR
185.30.166.165	AS60503 FNX Tecnologia LTDA	`0.56ms` from Sao Paulo, BR
58.72.181.245	AS3786 LG DACOM Corporation	`4.05ms` from Seoul, KR
175.231.203.117	AS4766 Korea Telecom	`1.88ms` from Seoul, KR
211.105.38.117	AS4766 Korea Telecom	`1.68ms` from Seoul, KR
60.90.126.245	AS17676 SoftBank Corp.	`2.86ms` from Tokyo, JP
86.88.140.117	AS1136 KPN B.V.	`0.93ms` from Amsterdam, NL
141.140.82.213	AS7029 Windstream Communications LLC	`0.85ms` from Ashburn, US
99.100.100.117	AS7018 AT&T Enterprises, LLC	`2.58ms` from Dallas, US
97.228.162.69	AS6167 Verizon Business	`9.71ms` from Denver, US
218.16.203.69	AS140308 CHINATELECOM Guangdong province Zhuhai 5G network	`6.42ms` from Guangzhou, CN
80.44.245.117	AS13285 TalkTalk Communications Limited	`7.25ms` from London, GB
179.178.25.229	AS18881 TELEFÔNICA BRASIL S.A	`8.11ms` from Novo Hamburgo, BR

Traceroute

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

traceroute -a -n -q1 -f3 -m16 210.77.12.50

traceroute to 210.77.12.50 (210.77.12.50): 16 hops max, 52 byte packets

3 [] 203.144.97.117 1.254 ms

4 [] 69.194.166.61 2.344 ms

5 *

6 *

7 *

8 [] 59.43.132.21 46.466 ms

9 *

10 *

11 *

12 [AS7497] 159.226.254.73 78.497 ms

13 [AS7497] 159.226.254.162 99.061 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On December 6th 2025

What are IP address ranges?

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