210.77.4.0/22

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 210.77.4.0/22

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

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
75.86.60.22	AS10796 Charter Communications Inc	`4.80ms` from Chicago, US
140.209.216.118	AS394089 Google LLC	`0.16ms` from Dallas, US
75.65.45.118	AS7922 Comcast Cable Communications, LLC	`19.58ms` from Dallas, US
218.199.70.6	AS4538 China Education and Research Network Center	`16.52ms` from Guangzhou, CN
180.67.50.86	AS9318 SK Broadband Co Ltd	`1.48ms` from Incheon, KR
37.52.30.134	AS6849 JSC "Ukrtelecom"	`9.99ms` from Kyiv, UA
201.113.143.86	AS8151 UNINET	`10.70ms` from Santiago de Queretaro, MX
61.75.106.166	AS4766 Korea Telecom	`7.25ms` from Seoul, KR
119.215.170.214	AS4766 Korea Telecom	`4.52ms` from Seoul, KR
62.212.45.134	AS34797 System Net Ltd	`0.83ms` from Tbilisi, GE
172.175.166.230	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
14.223.184.22	AS4134 CHINANET-BACKBONE	`2.23ms` from Guangzhou, CN
171.235.186.166	AS7552 Viettel Group	`0.92ms` from Ho Chi Minh City, VN
80.218.189.166	AS6730 Sunrise GmbH	`4.84ms` from Kloten, CH
43.204.129.22	AS16509 Amazon.com, Inc.	`0.11ms` from Mumbai, IN
126.59.182.246	AS17676 SoftBank Corp.	`4.00ms` from Osaka, JP
118.126.53.86	AS45061 Shanghai Information Network Co.,Ltd.	`3.78ms` from Shanghai, CN
89.249.7.198	AS39642 Norlys Digital A/S	`2.82ms` from Skanderborg, DK
191.250.236.6	AS18881 TELEFÔNICA BRASIL S.A	`15.95ms` from São Paulo, BR
177.162.33.166	AS26599 TELEFÔNICA BRASIL S.A	`1.68ms` from São Paulo, BR
126.8.192.22	AS17676 SoftBank Corp.	`4.01ms` from Tokyo, JP
60.47.232.134	AS4713 NTT DOCOMO BUSINESS,Inc.	`12.19ms` from Tokyo, JP
69.55.118.86	AS19331 Twin Lakes Telephone Cooperative Corporation	`12.93ms` from Atlanta, US
110.242.35.246	AS4837 CHINA UNICOM China169 Backbone	`10.98ms` from Beijing, CN
63.33.216.86	AS16509 Amazon.com, Inc.	`0.38ms` from Dublin, IE

Traceroute

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

traceroute -a -n -q1 -f3 -m13 210.77.4.108

traceroute to 210.77.4.108 (210.77.4.108): 13 hops max, 52 byte packets

3 [AS749] 21.252.32.1 1.672 ms

4 *

5 [AS4134] 36.103.191.213 0.523 ms

6 *

7 *

8 *

9 [AS7497] 159.226.254.73 21.844 ms

10 [AS7497] 159.226.254.162 21.954 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Zhongwei, CN

On January 9th 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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