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:         [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 210.77.4.0/22

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

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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
181.84.162.86	AS7303 Telecom Argentina S.A.	`16.22ms` from Buenos Aires, AR
117.211.1.54	AS9829 National Internet Backbone	`1.92ms` from Chennai, IN
73.14.32.214	AS7922 Comcast Cable Communications, LLC	`6.46ms` from Denver, US
84.64.125.230	AS5378 Vodafone Limited	`6.69ms` from Edinburgh, GB
116.104.77.166	AS7552 Viettel Group	`1.09ms` from Hanoi, VN
16.50.157.230	AS16509 Amazon.com, Inc.	`0.65ms` from Melbourne, AU
158.222.248.70	AS12271 Charter Communications Inc	`4.25ms` from New York City, US
75.114.118.166	AS33363 Charter Communications, Inc	`1.64ms` from Orlando, US
203.110.229.246	AS17936 Cable Television Kani Co.,Inc.	`4.87ms` from Osaka, JP
123.134.51.230	AS4837 CHINA UNICOM China169 Backbone	`5.20ms` from Qingdao, CN
191.234.152.86	AS8075 Microsoft Corporation	`0.69ms` from Sao Paulo, BR
210.223.167.38	AS4766 Korea Telecom	`6.00ms` from Seoul, KR
103.244.111.230	AS9526 KOSCOM	`1.26ms` from Seoul, KR
191.193.140.134	AS27699 TELEFÔNICA BRASIL S.A	`2.30ms` from São Paulo, BR
213.210.51.54	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP
77.60.19.22	AS1136 KPN B.V.	`0.46ms` from Amsterdam, NL
137.103.93.70	AS11776 Breezeline	`11.56ms` from Ashburn, US
188.25.186.54	AS8708 DIGI ROMANIA S.A.	`0.84ms` from Bucharest, RO
140.209.216.118	AS394089 Google LLC	`0.14ms` from Dallas, US
13.74.35.246	AS8075 Microsoft Corporation	`0.20ms` from Dublin, IE
18.199.160.166	AS16509 Amazon.com, Inc.	`0.13ms` from Frankfurt am Main, DE
130.223.0.70	AS559 SWITCH	`2.15ms` from Geneve, CH
23.100.90.70	AS8075 Microsoft Corporation	`0.36ms` from Hong Kong, HK
122.202.133.6	AS9946 KCTV JEJU BROADCASTING	`9.39ms` from Incheon, KR
105.247.29.182	AS36994 Vodacom	`0.19ms` 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 -f5 -m10 210.77.7.132

traceroute to 210.77.7.132 (210.77.7.132): 10 hops max, 52 byte packets

5 [AS7497] 103.2.211.128 42.949 ms

6 [AS7497] 159.226.254.85 44.619 ms

7 [AS7497] 159.226.254.158 41.579 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Chengdu, 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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