203.237.128.0/17 - bgp.tools

203.237.128.0/17

Originated by AS4766
AS Name: Korea Telecom

Overview
Connectivity
Whois
Validation

Registered on: 29 Sep 1996 (29 years old)

Registered to: A929D872 (apnic)

Prefix status: Active, Allocated under Unknown

Size of prefix: 128 /24's

More Specific Announcements

There are too many more specific announcements to display here (71 prefixes!)

Upstreams

AS2914 - NTT America, Inc.
AS3491 - PCCW Global (HK) Ltd.
AS6762 - Telecom Italia Sparkle (Seabone)
AS3320 - Deutsche Telekom AG
AS6830 - Liberty Global Europe Holding B.V.
AS3257 - GTT Communications Inc.
AS1299 - Arelion (fka. Telia Carrier)
AS3356 - Lumen (Level 3)

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Upstreams

	ASN	Description
	AS2914	NTT America, Inc.
	AS3491	PCCW Global (HK) Ltd.
	AS6762	Telecom Italia Sparkle (Seabone)
	AS3320	Deutsche Telekom AG
	AS6830	Liberty Global Europe Holding B.V.
	AS3257	GTT Communications Inc.
	AS1299	Arelion (fka. Telia Carrier)
	AS3356	Lumen (Level 3)
	AS174	Cogent Communications, LLC

Peers

	ASN	Description
	AS63927	RISE
	AS36236	NetActuate, Inc
	AS14907	Wikimedia Foundation Inc.
	AS24516	Virtutel Pty Ltd
	AS4181	TDS TELECOM
	AS8426	Claranet Limited
	AS37271	Workonline Communications(Pty) Ltd
	AS32590	Valve Corporation
	AS8529	Zain Omantel International FZ-LLC
	AS8455	atom86 BV
	AS200052	Feral.io Ltd
	AS16276	OVH SAS
	AS199524	Gcore S.A.
	AS7029	Uniti (fka. Windstream)
	AS50304	Blix Solutions AS
	AS20473	The Constant Company, LLC
	AS8966	Etisalat (E&)
	AS11404	Astound (fka. Wave Broadband)
	AS9457	DREAMLINE CO.
	AS18403	FPT Telecom Company
	AS37100	SEACOM Limited
	AS20485	TransTeleCom JSC
	AS9318	SK Broadband Co Ltd
	AS9304	HGC Global Communications Limited
	AS55818	Matrix Cable Internet Exchange
	AS3216	Vimpelcom PJSC
	AS4651	The Communications Authority of Thailand (CAT)
	AS20115	Spectrum (Charter)
	AS58453	China Mobile International
	AS17676	SoftBank Corp.
	AS13786	Seaborn (Seabras USA, LLC)
	AS12389	Rostelecom PJSC
	AS6327	Shaw Communications
	AS4826	Vocus Connect International Backbone
	AS42708	Glesys AB
	AS2497	Internet Initiative Japan Inc.
	AS13335	Cloudflare, Inc.
	AS7473	Singapore Telecommunications Ltd
	AS23764	China Telecom Global
	AS37468	Angola Cables
	AS60068	Datacamp Limited (CDN77 / DataPacket)
	AS3462	HiNet (Chunghwa Telecom)
	AS9286	KINX
	AS9848	SEJONG NETWORKS
	AS39351	31173 Services AB
	AS49544	i3D.net B.V
	AS1273	Vodafone Group PLC
	AS9498	Bharti Airtel Ltd.
	AS577	Bell Canada
	AS52320	V.tal (GlobeNet)
	AS7922	Comcast Cable Communications, LLC
	AS4637	Telstra International Limited
	AS137409	GSL Networks Pty LTD
	AS33891	Core-Backbone GmbH
	AS2914	NTT America, Inc.
	AS3491	PCCW Global (HK) Ltd.
	AS6762	Telecom Italia Sparkle (Seabone)
	AS6461	Zayo Bandwidth
	AS3320	Deutsche Telekom AG
	AS6830	Liberty Global Europe Holding B.V.
	AS9002	RETN Limited
	AS3257	GTT Communications Inc.
	AS1299	Arelion (fka. Telia Carrier)
	AS3356	Lumen (Level 3)
	AS174	Cogent Communications, LLC
	AS6939	Hurricane Electric LLC

Last Update: 2026-08-30T04:32:37Z UTC

IRR Databases

IRR	Expected ASN
radb	AS3786	Show Raw route: 203.237.128.0/17 descr: contact noc@bora.net if necessary contact noc@bora.net if necessary origin: AS3786 mnt-by: MAINT-AS3786 changed: yuncheol@bora.net 20021216 source: RADB last-modified: 2023-11-13T16:09:31Z
radb	AS4766	Show Raw route: 203.237.128.0/17 descr: KORnet operation Center origin: AS4766 mnt-by: MAINT-AS4766 changed: choi@streamwk.kix.net 20010221 source: RADB last-modified: 2023-11-13T16:15:42Z

IRR

Expected ASN

radb

AS3786

Matches IRR source, but under a different ASN

Show Raw

route:          203.237.128.0/17
descr:          contact noc@bora.net if necessary
                contact noc@bora.net if necessary
origin:         AS3786
mnt-by:         MAINT-AS3786
changed:        yuncheol@bora.net 20021216
source:         RADB
last-modified:  2023-11-13T16:09:31Z

radb

AS4766

Show Raw

route:          203.237.128.0/17
descr:          KORnet operation Center
origin:         AS4766
mnt-by:         MAINT-AS4766
changed:        choi@streamwk.kix.net 20010221
source:         RADB
last-modified:  2023-11-13T16:15:42Z

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More Specific Announcements

Upstreams

Upstreams

Peers

IRR Databases