ASN Lookup Tool

Headquarters, USAISC mail.mil US US 121 Routes

AS Data

AS1501

AS1501 – Headquarters, USAISC

AS Number 1501
AS Name DNIC-ASBLK-01500-01502
Organization Headquarters, USAISC(headqu-3)
Country US
Website mail.mil
Number of IPv4 Routes 121
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 2004-05-12

ASN Intelligence API for production workflows

Use ASN data for AS1501 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
155.26.228.0/24 256
143.73.38.0/24 256
143.76.48.0/24 256
143.194.132.0/24 256
143.249.164.0/24 256
143.86.63.0/24 256
143.70.21.0/24 256
158.11.17.0/24 256
155.20.54.0/24 256
155.30.127.0/24 256

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:       1500 - 1502
ASName:         DNIC-ASBLK-01500-01502
ASHandle:       AS1500
RegDate:        2004-05-12
Updated:        2011-08-11    
Ref:            https://rdap.arin.net/registry/autnum/1500



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


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

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


#
# 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
AS1555 United States Department of Defense DoD US
AS1555 United States Department of Defense (DoD) US

Upstreams

AS Number Description Country
AS1555 United States Department of Defense DoD US

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Frequently Asked Questions

ASN AS1501 is an Autonomous System Number used to identify a network for BGP internet routing.
AS1501 is listed under Headquarters, USAISC.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
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.