210.77.24.0/23

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 210.77.24.0/23

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

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

IP Address	ASN	Details
210.77.24.254	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`4.75ms` 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
76.151.208.199	AS7922 Comcast Cable Communications, LLC	`6.06ms` from Ashburn, US
99.172.121.247	AS7018 AT&T Enterprises, LLC	`17.38ms` from Atlanta, US
3.135.73.103	AS16509 Amazon.com, Inc.	`0.12ms` from Columbus, US
34.44.112.199	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
54.37.169.39	AS16276 OVH SAS	`0.04ms` from Gravelines, FR
112.114.111.87	AS4134 CHINANET-BACKBONE	`8.50ms` from Kunming, CN
126.95.127.151	AS17676 SoftBank Corp.	`3.64ms` from Osaka, JP
88.100.231.55	AS5610 O2 Czech Republic, a.s.	`1.38ms` from Prague, CZ
35.175.103.71	AS14618 Amazon.com, Inc.	`0.40ms` from Reston, US
95.35.33.71	AS1680 Cellcom Fixed Line Communication L.P	`2.03ms` from Rosh Ha‘Ayin, IL
98.59.250.7	AS7922 Comcast Cable Communications, LLC	`6.21ms` from Seattle, US
123.116.31.119	AS4808 China Unicom Beijing Province Network	`4.45ms` from Beijing, CN
79.252.49.119	AS3320 Deutsche Telekom AG	`1.89ms` from Duesseldorf, DE
108.216.127.183	AS7018 AT&T Enterprises, LLC	`4.25ms` from Houston, US
172.67.178.167	AS13335 Cloudflare, Inc.	`0.10ms` from Lisbon, PT
81.184.252.167	AS6739 VODAFONE ONO, S.A.	`11.24ms` from Madrid, ES
185.206.165.183	AS200350 Yandex.Cloud LLC	`3.00ms` from Moscow, RU
94.251.117.7	AS21127 Joint Stock Company TransTeleCom	`1.17ms` from Novosibirsk, RU
79.235.65.135	AS3320 Deutsche Telekom AG	`2.28ms` from Nuernberg, DE
84.160.23.7	AS3320 Deutsche Telekom AG	`7.07ms` from Nuernberg, DE
78.40.52.199	AS13193 Keyyo SA	`2.69ms` from Paris, FR
86.104.201.23	AS1653 Vetenskapsradet / SUNET	`0.60ms` from Stockholm, SE
219.106.197.247	AS10010 TOKAI Communications Corporation	`8.45ms` from Tokyo, JP
4.241.96.183	AS8075 Microsoft Corporation	`0.17ms` from Tokyo, JP
36.40.64.199	AS134768 CHINANET SHAANXI province Cloud Base network	`2.35ms` from Xi'an, CN

Traceroute

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

traceroute -a -n -q1 -f6 210.77.24.254

traceroute to 210.77.24.254 (210.77.24.254): 64 hops max, 52 byte packets

6 [AS7497] 103.2.211.130 4.419 ms

7 [AS7497] 159.226.254.97 7.922 ms

8 *

9 *

10 *

11 [AS7497] 210.77.16.112 3.47 ms

12 *

13 [AS7497] 210.77.24.254 3.929 ms

Measurement taken from

IPinfo ProbeNet in Beijing, 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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