223.193.40.0/21 - bgp.tools

223.193.40.0/21

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

Overview
Connectivity
Whois
DNS
Validation

Registered on: 28 Jul 2010 (15 years old)

Registered to: A91A58AA (apnic)

Prefix status: Active, Allocated under APNIC

Size of prefix: 8 /24's

Less Specific Announcements

	Prefix	Description
	223.192.0.0/15	Computer Network Information Center of Chinese Academ...

Upstreams

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

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Upstreams

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

Peers

	ASN	Description
	AS1239	Sprint Wireline (Cogent)
	AS293	ESnet
	AS101	University of Washington
	AS7660	Asia Pacific Advanced Network - Japan
	AS7575	Australian Academic and Research Network (AARNet)
	AS1103	SURF B.V.
	AS2907	Science Information Network
	AS4837	China Unicom Backbone
	AS9808	China Mobile Backbone
	AS6509	CANARIE Inc
	AS11537	Internet2
	AS20965	GEANT Vereniging
	AS4134	China Telecom Backbone
	AS6939	Hurricane Electric LLC
	AS3491	PCCW Global (HK) Ltd.
	AS174	Cogent Communications, LLC

inetnum:        223.192.0.0 - 223.193.255.255
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:  2023-10-12T05:13:42Z
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
	223.193.40.107	list107.niccs.org.cn.
	223.193.40.117	list117.niccs.org.cn.
	223.193.41.77	list77.niccs.org.cn.
	223.193.41.95	list95.niccs.org.cn.

Last Update: 2025-10-29T06:50:51Z UTC

	A	DNS
	223.193.40.5	ops.pan.cstcloud.cn
	223.193.40.155	cytomics.gibh.ac.cn
	223.193.40.166	tdns.cstnet.cn
	223.193.40.191	kjy.yunyingws.com
	223.193.44.17	console.aecs.cstcloud.cn
	223.193.44.66	www.cstcloud.cn
	223.193.44.69	kepu.cn, school.kepu.net.cn, kepu.net.cn
	223.193.44.82	casmooc.cn
	223.193.44.87	hp.casisd.cn, wenj.casisd.cn
	223.193.44.90	fast.bao.ac.cn
	223.193.44.98	bj.yunyingws.com
	223.193.44.132	www.virosin.org, virosin.org, virus.org.cn
	223.193.44.135	goscloud.net
	223.193.44.145	testlist.niccs.org.cn
	223.193.44.162	osic.com.cn, bjzhongke.com.cn, www.casqiem.ac.cn ( 9 total...)
	223.193.44.175	horizon.scidb.cn, wtoapi.scihorizon.cn, api.scihorizon.cn ( 11 total...)
	223.193.44.181	list.niccs.org.cn
	223.193.44.182	*.casconf.cn, www.casconf.cn
	223.193.44.190	sn.genetics.ac.cn, ics.taes.cn, static-cas.dnayun.com ( 4 total...)
	223.193.44.194	www.niccs.org.cn, niccs.org.cn
	223.193.44.205	www.jgenetgenomics.cn, www.chinagene.cn
	223.193.44.212	geoicloud.cn
	223.193.44.213	qhbio.ac.cn
	223.193.44.215	*.coding.cstcloud.cn, agent.cstcloud.cn, coding.cstcloud.cn ( 4 total...)

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

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Upstreams

Upstreams

Peers

RPKI Chain (Current origin: Valid)