210.77.26.0/23

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:         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 210.77.26.0/23

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

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Pingable IPs

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

IP Address	ASN	Details
210.77.26.96	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.68ms` 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
78.54.25.119	AS6805 Telefonica Germany GmbH & Co.OHG	`2.40ms` from Berlin, DE
89.173.227.247	AS6830 Liberty Global Europe Holding B.V.	`7.68ms` from Bratislava, SK
147.229.116.119	AS197451 Brno University of Technology	`0.44ms` from Brno, CZ
112.66.135.183	AS4134 CHINANET-BACKBONE	`1.69ms` from Haikou, CN
82.59.156.39	AS3269 Telecom Italia S.p.A.	`6.47ms` from Milan, IT
79.50.122.215	AS3269 Telecom Italia S.p.A.	`2.45ms` from Milan, IT
73.94.199.215	AS7922 Comcast Cable Communications, LLC	`3.33ms` from Minneapolis, US
84.48.64.55	AS211309 Obos Nett AS	`1.94ms` from Sandefjord, NO
99.233.211.23	AS812 Rogers Communications Canada Inc.	`5.78ms` from Toronto, CA
134.112.83.87	AS8075 Microsoft Corporation	`0.18ms` from Warsaw, PL
20.172.202.87	AS8075 Microsoft Corporation	`0.44ms` from Ashburn, US
203.121.131.71	AS4765 Pacific Internet Pte Ltd	`0.65ms` from Bangkok, TH
160.45.213.103	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`1.28ms` from Berlin, DE
52.38.127.199	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
81.183.120.7	AS5483 Magyar Telekom Plc.	`5.59ms` from Budapest, HU
169.45.155.7	AS36351 IBM Cloud	`1.06ms` from Dallas, US
18.184.194.135	AS16509 Amazon.com, Inc.	`0.15ms` from Frankfurt am Main, DE
217.86.181.7	AS3320 Deutsche Telekom AG	`4.40ms` from Frankfurt am Main, DE
47.243.54.87	AS45102 Alibaba (US) Technology Co., Ltd.	`0.77ms` from Hong Kong, HK
116.172.152.151	AS4837 CHINA UNICOM China169 Backbone	`1.20ms` from Lhasa, CN
78.110.64.119	AS39273 Kalaam Telecom Bahrain B.S.C.	`3.88ms` from Manama, BH
179.27.184.71	AS6057 Administracion Nacional de Telecomunicaciones	`1.51ms` from Montevideo, UY
5.143.158.135	AS12389 PJSC Rostelecom	`17.51ms` from Moscow, RU
24.161.93.23	AS12271 Charter Communications Inc	`4.36ms` from New York City, US
87.88.52.39	AS5410 Bouygues Telecom SA	`2.08ms` from Paris, FR

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 210.77.27.248

traceroute to 210.77.27.248 (210.77.27.248): 14 hops max, 52 byte packets

5 [AS4837] 42.49.199.245 2.965 ms

6 *

7 *

8 *

9 [AS4837] 219.158.39.2 29.609 ms

10 [AS7497] 159.226.254.69 28.795 ms

11 [AS7497] 159.226.254.158 29.251 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Zhangjiajie, 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.

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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