ASN Lookup Tool

Headquarters, USAISC mail.mil US US 1061 Routes

AS Data

AS1540

AS1540 – Headquarters, USAISC

AS Number 1540
AS Name DNIC-ASBLK-01534-01546
Organization Headquarters, USAISC (headqu-3)
Country US
Website mail.mil
Number of IPv4 Routes 1025
Number of IPv6 Routes 36
ASN type GOVERNMENT
Registry ARIN
Date Allocated 2004-05-12

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Use ASN data for AS1540 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
6.65.27.0/24 256
155.8.193.0/24 256
192.153.147.0/24 256
144.104.76.0/24 256
6.71.184.0/22 1024
155.152.254.0/24 256
155.218.149.0/24 256
160.147.41.0/24 256
144.245.58.0/24 256
6.76.70.0/23 512
155.151.6.0/24 256
6.65.174.0/23 512
144.245.8.0/24 256
6.70.50.0/23 512
6.77.46.0/23 512
6.16.70.0/24 256
158.9.168.0/24 256
160.147.246.0/24 256
6.69.48.0/23 512
158.9.136.0/23 512
6.72.240.0/22 1024
158.13.120.0/21 2048
164.169.112.0/20 4096
6.66.98.0/23 512
6.16.73.0/24 256
2608:129:2a10::/48 ~1×10²⁴
6.72.192.0/23 512
143.84.99.0/24 256
144.104.75.0/24 256
144.101.114.0/24 256
144.245.70.0/24 256
6.70.44.0/23 512
155.29.110.0/24 256
144.104.77.0/24 256
6.73.226.0/23 512
6.72.216.0/23 512
155.213.240.0/21 2048
6.66.232.0/23 512
155.218.20.0/23 512
192.82.113.0/24 256
146.55.125.0/24 256
158.16.246.0/23 512
192.108.124.0/24 256
6.130.39.0/24 256
6.16.104.0/24 256
6.130.38.0/24 256
144.105.48.0/21 2048
143.84.169.0/24 256
155.21.178.0/23 512
6.66.224.0/23 512
144.245.10.0/24 256
6.66.226.0/23 512
158.16.48.0/23 512
144.245.129.0/24 256
6.80.166.0/23 512
6.42.216.0/22 1024
6.73.228.0/23 512
146.54.0.0/16 65536
6.72.214.0/23 512
6.16.105.0/24 256

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:       1534 - 1546
ASName:         DNIC-ASBLK-01534-01546
ASHandle:       AS1534
RegDate:        2004-05-12
Updated:        2011-08-24
Ref:            https://rdap.arin.net/registry/autnum/1534


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
AS27064 DoD Network Information Center US
AS367 United States Department of Defense (DoD) US
AS370 United States Department of Defense DoD US
AS337 United States Department of Defense DoD US
AS27064 United States Department of Defense DoD US
AS306 United States Department of Defense (DoD) US
AS13979 AT&T Enterprises, LLC US
AS588 Headquarters, USAISC US
AS306 United States Department of Defense DoD US
AS421005094
AS331 United States Department of Defense DoD US
AS367 United States Department of Defense DoD US

Upstreams

AS Number Description Country
AS27064 United States Department of Defense DoD US
AS367 United States Department of Defense DoD US

Downstreams

AS Number Description Country
AS370 United States Department of Defense DoD US
AS337 United States Department of Defense DoD US
AS13979 AT&T Enterprises, LLC US
AS588 Headquarters, USAISC US
AS306 United States Department of Defense DoD US
AS421005094
AS331 United States Department of Defense DoD US

Legacy Routes

2608:12a:7464::/48

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Frequently Asked Questions

ASN AS1540 is an Autonomous System Number used to identify a network for BGP internet routing.
AS1540 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.