210.77.0.0/19 - bgp.tools

210.77.0.0/19

Originated by AS7497
AS Name: Computer Network Information Center of Chinese Academ...

Overview
Connectivity
Whois
DNS
Validation

Registered on: 11 Aug 1998 (27 years old)

Registered to: A91A58AA (apnic)

Prefix status: Active, Allocated under APNIC

Size of prefix: 32 /24's

More Specific Announcements

	Prefix	Description
	210.77.0.0/19	Computer Network Information Center of Chinese Academ...
	210.77.0.0/21	Computer Network Information Center of Chinese Academ...
	210.77.2.0/23	Computer Network Information Center of Chinese Academ...
	210.77.4.0/22	Computer Network Information Center of Chinese Academ...
	210.77.8.0/21	Computer Network Information Center of Chinese Academ...
	210.77.8.0/22	Computer Network Information Center of Chinese Academ...
	210.77.12.0/23	Computer Network Information Center of Chinese Academ...
	210.77.14.0/23	Computer Network Information Center of Chinese Academ...
	210.77.16.0/21	Computer Network Information Center of Chinese Academ...
	210.77.22.0/23	Computer Network Information Center of Chinese Academ...
	210.77.24.0/21	Computer Network Information Center of Chinese Academ...
	210.77.24.0/23	Computer Network Information Center of Chinese Academ...
	210.77.26.0/23	Computer Network Information Center of Chinese Academ...
	210.77.31.0/24	Computer Network Information Center of Chinese Academ...

Upstreams

AS3491 - PCCW Global (HK) Ltd.
AS174 - Cogent Communications, LLC

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description
	AS3491	PCCW Global (HK) Ltd.
	AS174	Cogent Communications, LLC

Peers

	ASN	Description
	AS132337	Axclusive
	AS293	ESnet
	AS4837	China Unicom Backbone
	AS101	University of Washington
	AS1239	Sprint Wireline (Cogent)
	AS36236	NetActuate, Inc
	AS7660	Asia Pacific Advanced Network - Japan
	AS7575	Australian Academic and Research Network (AARNet)
	AS140627	OneQode
	AS49544	i3D.net B.V
	AS9808	China Mobile Backbone
	AS1103	SURF B.V.
	AS24482	SG.GS
	AS2907	Science Information Network
	AS8359	MTS PJSC
	AS6509	CANARIE Inc
	AS11537	Internet2
	AS20965	GEANT Vereniging
	AS4635	HKIX Route Servers
	AS4134	China Telecom Backbone
	AS6939	Hurricane Electric LLC
	AS3491	PCCW Global (HK) Ltd.
	AS174	Cogent Communications, LLC

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


organisation:   ORG-CA107-AP
org-name:       CNIC-CAS
org-type:       LIR
country:        CN
address:        ********
phone:          ********
# Email removed, Log into bgp.tools to see whois emails/phone numbers
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:18:50Z
source:         APNIC

Last Update: 2026-06-03T03:23:17Z UTC

Remove auto generated reverse DNS entries

	Address	PTR
	210.77.0.15	card.ucas.edu.cn.
	210.77.16.1	gsns.gscas.ac.cn.
	210.77.16.44	time.ucas.ac.cn.
	210.77.17.26	zihuan.ucas.ac.cn.
	210.77.19.42	biodata.ucas.ac.cn.
	210.77.19.241	visual.ucas.ac.cn.
	210.77.19.242	pearl.ucas.ac.cn.
	210.77.19.251	hpcc.ucas.ac.cn.
	210.77.19.252	pargma.ucas.ac.cn.
	210.77.19.253	igeon.ucas.ac.cn.
	210.77.21.253	ftp.ucas.ac.cn.
	210.77.29.129	survey.ucas.ac.cn.
	210.77.29.144	dao.ucas.ac.cn.
	210.77.29.147	wsi.ucas.ac.cn.
	210.77.30.21	across.ucas.ac.cn.
	210.77.30.22	pview.ucas.ac.cn.
	210.77.30.23	wcm.ucas.ac.cn.
	210.77.30.24	cec.ucas.ac.cn.
	210.77.30.27	wanglab.ucas.ac.cn.
	210.77.30.28	www.cbl-science.cn.
	210.77.30.29	www.cec-science.cn.
	210.77.30.65	science100.ucas.edu.cn.
	210.77.30.82	wb.ucas.ac.cn.
	210.77.30.130	ctmd.gucas.ac.cn.gucas.ac.cn.
	210.77.30.253	alumadm.ucas.ac.cn.

Data Age between: 2025-11-14T02:35:13Z UTC and 2024-11-14T21:28:22Z UTC

	A	DNS
	210.77.3.133	ribo.asuscomm.com
	210.77.16.1	gsns.gscas.ac.cn, ns.ucas.edu.cn
	210.77.17.126	geodesy.fun
	210.77.18.13	device-54e13fba-1350-40ed-9bf0-b58c821313b8.remotewd.com
	210.77.19.44	file.rseco.net
	210.77.19.74	*.cmp.dscloud.me, cmp.dscloud.me
	210.77.23.56	netbird.kunzh.top
	210.77.23.101	smoothie.ip-dynamic.org
	210.77.23.164	smoothie04.duckdns.org
	210.77.28.152	www.moessl.ucas.ac.cn
	210.77.28.166	moessl.yorelog.com, *.moessl.yorelog.com

Last Update: 2026-05-30T22:53:46Z UTC

IRR Databases

IRR	Expected ASN
apnic	AS7497	Show Raw 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
radb	AS7497	Show Raw route: 210.77.0.0/19 descr: PACNET (proxy-registered route object) origin: AS7497 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some PACNET peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse@pacnet.net if you have any Concerns regarding Spam/Abuses related to this object + Please contact ip-noc@pacnet.net if you have any other Questions regarding this object. notify: ip-noc@pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc@pacnet.net 20100201 source: RADB last-modified: 2023-11-13T15:58:52Z

IRR

Expected ASN

apnic

AS7497

Show Raw

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

radb

AS7497

Show Raw

route:          210.77.0.0/19
descr:          PACNET (proxy-registered route object)
origin:         AS7497
remarks:        This route object is for a PACNET customer route which is
                being exported under this origin AS.
	               +
	               This route object was created because no existing route
                object with the same origin was found, and since some
                PACNET peers filter based on these objects this route
                may be rejected if this object is not created.
                +
                Please contact abuse@pacnet.net if you have any
                Concerns regarding Spam/Abuses related to this object
	               +
                Please contact ip-noc@pacnet.net if you have any other
                Questions regarding this object.
notify:         ip-noc@pacnet.net
mnt-by:         MAINT-AS4637
changed:        ip-noc@pacnet.net 20100201
source:         RADB
last-modified:  2023-11-13T15:58:52Z

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More Specific Announcements

Upstreams

Upstreams

Peers

IRR Databases

RPKI Chain (Current origin: Valid)