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AS289 Headquarters, USAISC | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

Headquarters, USAISC mail.mil

US 3 Routes

AS Data

AS289

AS289 – Headquarters, USAISC

AS Number	289
AS Name	DNIC-AS-00289
Organization	Headquarters, USAISC(headqu-3)
Country	US
Website	mail.mil
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1989-06-02

ASN Intelligence API for production workflows

Use ASN data for AS289 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
134.194.0.0/16	AS289	Headquarters, USAISC	Headquarters, USAISC	65536
147.241.0.0/19	AS289	Headquarters, USAISC	Headquarters, USAISC	8192
2001:480:36::/48	AS289	Headquarters, USAISC	High Performance Computing	~1×10²⁴

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:       289
ASName:         DNIC-AS-00289
ASHandle:       AS289
RegDate:        1989-06-02
Updated:        2011-08-24    
Ref:            https://rdap.arin.net/registry/autnum/289


OrgName:        Headquarters, USAISC
OrgId:          HEADQU-3
Address:        NETC-ANC CONUS TNOSC
City:           Fort Huachuca
StateProv:      AZ
PostalCode:     85613
Country:        US
RegDate:        1990-03-26
Updated:        2025-03-13
Ref:            https://rdap.arin.net/registry/entity/HEADQU-3


OrgTechHandle: REGIS10-ARIN
OrgTechName:   Registration
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/REGIS10-ARIN

OrgAbuseHandle: REGIS10-ARIN
OrgAbuseName:   Registration
OrgAbusePhone:  +1-844-347-2457 
OrgAbuseEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgAbuseRef:    https://rdap.arin.net/registry/entity/REGIS10-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
AS668	United States Department of Defense DoD	US
AS668	United States Department of Defense (DoD)	US

Upstreams

AS Number	Description	Country
AS668	United States Department of Defense DoD	US

Frequently Asked Questions

What is ASN AS289?

ASN AS289 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS289?

AS289 is listed under Headquarters, USAISC.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.