ASN Lookup Tool

Headquarters, USAISC mail.mil US US 46 Routes

AS Data

AS747

AS747 – Headquarters, USAISC

AS Number 747
AS Name DNIC-AS-00747
Organization Headquarters, USAISC(headqu-3)
Country US
Website mail.mil
Number of IPv4 Routes 46
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 1990-09-25

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Use ASN data for AS747 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
144.107.136.0/21 2048
144.107.128.0/21 2048
155.20.163.0/24 256
150.196.48.0/20 4096
150.196.64.0/20 4096
155.20.231.0/24 256
144.107.224.0/20 4096
143.68.64.0/19 8192
215.1.96.0/20 4096
147.242.3.0/24 256

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:       747
ASName:         DNIC-AS-00747
ASHandle:       AS747
RegDate:        1990-09-25
Updated:        2011-08-02    
Ref:            https://rdap.arin.net/registry/autnum/747


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
AS27066 United States Department of Defense (DoD) US
AS27066 United States Department of Defense DoD US
AS5277 United States Department of Defense DoD US
AS5277 United States Department of Defense (DoD) US

Upstreams

AS Number Description Country
AS27066 United States Department of Defense DoD US

Downstreams

AS Number Description Country
AS5277 United States Department of Defense DoD US

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Frequently Asked Questions

ASN AS747 is an Autonomous System Number used to identify a network for BGP internet routing.
AS747 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.