ASN AS11283 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11283?

AS11283 is listed under Costco, Inc..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS11283 Costco, Inc. | IPGeolocation.io

ASN Lookup Tool

Costco, Inc. costco.com

US 45 Routes

AS Data

AS11283

AS11283 – Costco, Inc.

AS Number	11283
AS Name	COSTCO
Organization	Costco, Inc.(costco-3)
Country	US
Website	costco.com
Number of IPv4 Routes	45
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1998-06-11

ASN Intelligence API for production workflows

Use ASN data for AS11283 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
170.167.240.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.63.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.50.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.100.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.5.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.0.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.249.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.117.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.104.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256
170.167.55.0/24	AS11283	Costco, Inc.	Costco Companies, Inc.	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       11283
ASName:         COSTCO
ASHandle:       AS11283
RegDate:        1998-06-11
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/11283


OrgName:        Costco, Inc.
OrgId:          COSTCO-3
Address:        999 Lake Dr.
City:           Issaquah
StateProv:      WA
PostalCode:     98027
Country:        US
RegDate:        1998-06-11
Updated:        2012-10-10
Ref:            https://rdap.arin.net/registry/entity/COSTCO-3


OrgTechHandle: ZC167-ARIN
OrgTechName:   COSTCO INC
OrgTechPhone:  +1-425-313-8100 
OrgTechEmail:  admincontact@costco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZC167-ARIN

OrgAbuseHandle: ZC167-ARIN
OrgAbuseName:   COSTCO INC
OrgAbusePhone:  +1-425-313-8100 
OrgAbuseEmail:  admincontact@costco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZC167-ARIN

RTechHandle: ZC167-ARIN
RTechName:   COSTCO INC
RTechPhone:  +1-425-313-8100 
RTechEmail:  admincontact@costco.com
RTechRef:    https://rdap.arin.net/registry/entity/ZC167-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US