210.77.0.0/21

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 is invalid
mnt-by:         MAINT-CSTNET-CN
last-modified:  2026-02-11T13:10:17Z
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 is invalid
abuse-mailbox:  abuse-ip@cstnet.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-02-11T13:11:38Z
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 210.77.0.0/21

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
210.77.224.0/19	AS4808	China Great Wall Network	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
210.77.0.0/19	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	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

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

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

IP Address	ASN	Details
210.77.0.50	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`6.12ms` from Beijing, CN
210.77.1.78	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`3.73ms` 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
94.69.239.181	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`11.51ms` from Athens, GR
18.116.115.149	AS16509 Amazon.com, Inc.	`0.66ms` from Columbus, US
65.183.115.85	AS17253 TEC of Jackson, Inc.	`0.84ms` from Dallas, US
99.183.133.133	AS7018 AT&T Enterprises, LLC	`2.78ms` from Dallas, US
122.39.216.101	AS17858 LG POWERCOMM	`1.91ms` from Incheon, KR
23.51.13.21	AS20940 Akamai International B.V.	`0.12ms` from Kolkata, IN
82.5.47.229	AS5089 Virgin Media Limited	`5.29ms` from London, GB
219.111.26.197	AS2497 Internet Initiative Japan Inc.	`6.81ms` from Osaka, JP
217.108.30.213	AS3215 Orange S.A.	`1.35ms` from Paris, FR
122.178.23.5	AS24560 Bharti Airtel Ltd., Telemedia Services	`10.21ms` from Saint Thomas Mount, IN
185.27.106.85	AS60636 Coolnet Communications ltd	`1.00ms` from Tel Aviv, IL
41.111.200.101	AS36947 Telecom Algeria	`1.07ms` from Algiers, DZ
3.86.93.101	AS14618 Amazon.com, Inc.	`0.42ms` from Ashburn, US
67.172.62.117	AS7922 Comcast Cable Communications, LLC	`10.28ms` from Ashburn, US
101.129.33.245	AS45075 China Central Television	`2.17ms` from Beijing, CN
15.205.72.101	AS8987 Amazon Data Services Ireland Ltd	`0.31ms` from Boardman, US
134.228.48.213	AS13490 Buckeye Cablevision, Inc.	`9.00ms` from Flint, US
41.84.237.101	AS19711 SWAZILAND PTC	`7.00ms` from Johannesburg, ZA
69.30.225.69	AS32097 WholeSale Internet, Inc.	`0.14ms` from Kansas City, US
86.130.239.213	AS2856 British Telecommunications PLC	`3.12ms` from London, GB
45.145.55.133	AS40676 Psychz Networks	`0.36ms` from Los Angeles, US
77.240.146.5	AS42245 PJSC "Vimpelcom"	`9.95ms` from Moscow, RU
223.130.89.21	AS46010 SAMJUNG DATA SERVICE	`1.49ms` from Seoul, KR
188.226.93.101	AS12668 LLC KomTehCentr	`0.71ms` from Yekaterinburg, RU
24.135.238.181	AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.	`6.43ms` from Belgrade, RS

Traceroute

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

traceroute -a -n -q1 -f3 -m9 210.77.6.59

traceroute to 210.77.6.59 (210.77.6.59): 9 hops max, 52 byte packets

3 [] 123.255.91.238 1.945 ms

4 [AS7497] 159.226.254.9 38.059 ms

5 [AS7497] 159.226.254.237 37.897 ms

6 [AS7497] 159.226.254.162 38.104 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On March 13th 2026

What are IP address ranges?

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