210.77.2.0/23

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 210.77.2.0/23

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

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
178.231.191.7	AS31615 Odido Netherlands B.V.	`10.64ms` from Amsterdam, NL
112.126.103.71	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.90ms` from Beijing, CN
54.188.202.23	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
154.146.244.183	AS6713 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`14.59ms` from Casablanca, MA
71.73.217.151	AS10796 Charter Communications Inc	`18.88ms` from Columbus, US
35.239.142.151	AS396982 Google LLC	`0.10ms` from Council Bluffs, US
2.23.196.231	AS16625 Akamai Technologies, Inc.	`0.31ms` from Frankfurt am Main, DE
93.208.76.135	AS3320 Deutsche Telekom AG	`6.23ms` from Frankfurt am Main, DE
107.90.124.71	AS20057 AT&T Enterprises, LLC	`3.40ms` from Fremont, US
122.174.189.167	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.93ms` from Hyderabad, IN
220.191.184.167	AS4809 China Telecom Next Generation Carrier Network	`5.53ms` from Ningbo, CN
218.228.144.7	AS17511 OPTAGE Inc.	`1.99ms` from Osaka, JP
88.122.163.39	AS12322 Free SAS	`10.77ms` from Paris, FR
50.32.133.167	AS5650 Frontier Communications of America, Inc.	`7.38ms` from Secaucus, US
125.154.68.215	AS4766 Korea Telecom	`1.95ms` from Seoul, KR
126.65.90.71	AS17676 SoftBank Corp.	`2.81ms` from Tokyo, JP
60.74.232.151	AS17676 SoftBank Corp.	`17.53ms` from Tokyo, JP
60.238.201.183	AS2518 BIGLOBE Inc.	`9.67ms` from Tokyo, JP
195.142.34.231	AS34984 Superonline Iletisim Hizmetleri A.S.	`6.47ms` from Ankara, TR
172.225.216.119	AS36183 Akamai Technologies, Inc.	`0.21ms` from Chicago, US
68.61.131.247	AS7922 Comcast Cable Communications, LLC	`11.72ms` from Flint, US
59.36.105.247	AS4134 CHINANET-BACKBONE	`0.90ms` from Guangzhou, CN
168.4.69.71	AS8 Rice University	`6.03ms` from Houston, US
122.52.54.119	AS9299 Philippine Long Distance Telephone Company	`2.89ms` from Manila, PH
101.176.113.87	AS1221 Telstra Limited	`3.96ms` from Melbourne, AU

Traceroute

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

traceroute -a -n -q1 -m10 210.77.3.177

traceroute to 210.77.3.177 (210.77.3.177): 10 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 31.88 ms

2 *

3 [AS3491] 63.220.66.128 84.897 ms

4 [AS3491] 63.220.198.25 87.347 ms

5 *

6 *

7 [AS7497] 159.226.254.162 122.08 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 20th 2025

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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