210.77.12.0/23

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 210.77.12.0/23

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

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
94.64.164.135	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`5.75ms` from Athens, GR
155.166.184.167	AS20057 AT&T Enterprises, LLC	`3.00ms` from Atlanta, US
20.7.240.215	AS8075 Microsoft Corporation	`0.21ms` from Boydton, US
68.45.19.55	AS7922 Comcast Cable Communications, LLC	`15.61ms` from Chicago, US
204.157.130.231	AS268314 EWERTON DA SILVA LOPES TELECOMUNICAÇÕES	`0.66ms` from Joao Pessoa, BR
148.71.209.199	AS12353 Vodafone Portugal	`6.58ms` from Lisbon, PT
51.250.10.151	AS200350 Yandex.Cloud LLC	`2.70ms` from Moscow, RU
200.74.124.119	AS22047 VTR BANDA ANCHA S.A.	`10.16ms` from Santiago, CL
5.83.74.215	AS29119 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL	`1.84ms` from Sevilla, ES
42.236.59.55	AS4837 CHINA UNICOM China169 Backbone	`0.93ms` from Zhengzhou, CN
182.117.131.167	AS4837 CHINA UNICOM China169 Backbone	`5.33ms` from Zhengzhou, CN
31.187.217.247	AS50266 Odido Netherlands B.V.	`4.79ms` from Amsterdam, NL
187.87.170.183	AS53076 INTERPIRA INTERNET SERVICE PROVIDER LTDA	`17.11ms` from Belo Horizonte, BR
212.21.72.247	AS44716 D-hosting die Rackspace & Connectivity GmbH	`0.68ms` from Berlin, DE
109.138.16.119	AS5432 Proximus NV	`2.05ms` from Brussels, BE
62.180.3.87	AS5400 British Telecommunications PLC	`8.06ms` from Frankfurt am Main, DE
88.130.39.55	AS8881 1&1 Versatel GmbH	`0.92ms` from Hamburg, DE
58.186.220.183	AS18403 FPT Telecom Company	`2.24ms` from Ho Chi Minh City, VN
39.117.178.23	AS9318 SK Broadband Co Ltd	`1.80ms` from Incheon, KR
4.213.221.119	AS8075 Microsoft Corporation	`0.14ms` from Lohogaon, IN
5.49.67.231	AS5410 Bouygues Telecom SA	`11.29ms` from Marseille, FR
75.86.146.55	AS10796 Charter Communications Inc	`8.01ms` from Mount Prospect, US
54.233.254.151	AS16509 Amazon.com, Inc.	`0.16ms` from Osasco, BR
124.130.1.7	AS4837 CHINA UNICOM China169 Backbone	`10.05ms` from Qingdao, CN
167.100.179.231	AS25019 Saudi Telecom Company JSC	`3.56ms` from Riyadh, SA

Traceroute

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

traceroute -a -n -q1 -f5 -m14 210.77.12.10

traceroute to 210.77.12.10 (210.77.12.10): 14 hops max, 52 byte packets

5 [AS4837] 42.49.199.245 1.435 ms

6 *

7 *

8 *

9 [AS4837] 219.158.39.2 34.515 ms

10 [AS7497] 159.226.254.69 33.901 ms

11 [AS7497] 159.226.254.158 34.184 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Zhangjiajie, 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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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