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	Prefix	Description
	63.249.0.0/19	Semaphore Corporation
	209.221.128.0/18	Semaphore Corporation
	206.208.40.0/21	Semaphore Corporation
	2001:5d8::/32	Semaphore Corporation

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS2914	NTT America, Inc.	✔	✔
	AS3356	Lumen (Level 3)	✔	✔
	AS13331	MetaPeer	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS394492	US Electrodynamics, Inc.	✔	✘
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS22030	Zipcon LLC	✔	✘
	AS2914	NTT America, Inc.	✔	✔
	AS3356	Lumen (Level 3)	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS13331	MetaPeer	✔	✘
	AS137409	GSL Networks Pty LTD	✔	✔
	AS52025	ParadoxNetworks Limited	✔	✔
	AS55850	Mercury NZ Limited	✔	✔
	AS6461	Zayo Bandwidth	✔	✘
	AS47689	Pudu, LLC	✔	✔
	AS16970	MIDnet	✔	✘
	AS49544	i3D.net B.V	✔	✔
	AS26073	Cofractal, Inc.	✔	✔
	AS393577	Tritan Development	✔	✘
	AS9002	RETN Limited	✔	✔
	AS6327	Shaw Communications Inc.	✔	✘
	AS1828	Unitas Global	✔	✔
	AS47272	HYEHOST LTD	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS46997	Black Mesa Corporation	✔	✔
	AS52210	Accuris Technologies Ltd.	✔	✔
	AS16909	imput	✔	✔
	AS835	GoCodeIT Inc	✔	✘
	AS62642	Bigleaf Networks, Inc.	✔	✘
	AS7713	PT Telkom Indonesia Tbk	✔	✘
	AS24482	SG.GS	✔	✔
	AS50131	Spartan Host Ltd	✔	✔
	AS4455	IX Reach Ltd	✔	✔
	AS40138	Mach Dilemma, LLC	✔	✔
	AS10242	US Internet Corp	✔	✔
	AS53597	Hoyos Consulting LLC	✔	✔
	AS23459	applebee	✔	✔
	AS917	Misaka Network, Inc.	✔	✘
	AS400304	Redoubt Networks (Crunchbits)	✔	✘
	AS398465	Rackdog LLC	✔	✘
	AS136557	Host Universal Pty Ltd	✔	✘
	AS54429	Local Connectivity Lab	✔	✘
	AS38136	Akari Networks	✔	✔
	AS15169	Google LLC	✔	✔
	AS395823	doof.net	✔	✔
	AS3786	LG DACOM Corporation	✔	✘
	AS40350	Key Cooperative	✔	✘
	AS394256	Tech Futures Interactive Inc.	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS9299	PLDT (Philippine Long Distance Telephone Company)	✔	✔
	AS400818	Ausra LLC	✔	✔
	AS54309	NEGU	✔	✘
	AS62887	WhiteSky Communications, LLC.	✔	✘
	AS11404	Wave Broadband	✔	✔
	AS23033	Wowrack.com	✔	✘
	AS27523	Kawaii Networks LLC	✘	✔
	AS57695	Misaka Network, Inc.	✘	✔
	AS212895	Johannes Ernst	✘	✔

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Downstreams

	ASN	Description	IPv4	IPv6
	AS394492	US Electrodynamics, Inc.	✔	✘
	AS22030	Zipcon LLC	✔	✘

ASHandle:       AS3742
OrgID:          SEMA
ASName:         SEMAPHORE-1
ASNumber:       3742
RegDate:        1994-08-01
Updated:        2003-01-15
Source:         ARIN



OrgID:          SEMA
OrgName:        Semaphore Corporation
CanAllocate:    
Street:         2001 6th Avenue, Suite 1700
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98121
RegDate:        1994-08-01
Updated:        2022-12-05
OrgAdminHandle: GB31-ARIN
OrgTechHandle:  AGNEW27-ARIN
OrgTechHandle:  GB31-ARIN
OrgTechHandle:  NA15-ORG-ARIN
OrgTechHandle:  VD55-ARIN
OrgAbuseHandle: ABUSE174-ARIN
OrgNOCHandle:   NOC286-ARIN
Source:         ARIN





OrgAdminHandle:       GB31-ARIN
OrgAdminName:         Garth Brown
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        AGNEW27-ARIN
OrgTechName:          John Agnew
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        GB31-ARIN
OrgTechName:          Garth Brown
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NA15-ORG-ARIN
OrgTechName:           Network Address Change Request
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        VD55-ARIN
OrgTechName:          Vanderhoof Dylan
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ABUSE174-ARIN
OrgAbuseName:          Abuse
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NOC286-ARIN
OrgNOCName:            Network Operations Center
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-04-14T03:29:46Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
NTTCOM	as11274:as-transit	2
ALTDB	as-semaphore	10
RADB	as-pnapsea	233
ALTDB	as-sema	10
RADB	as-wave-customers	3614
ARIN	as-as27194-six-peers	24
BELL	as-gtpeers	73
RIPE	as-gblx	963
RADB	as7575:as-peer	256