ASN Lookup Tool

United States Department of Defense defense.gov US US 1470 Routes

AS Data

AS5972

AS5972 – United States Department of Defense

AS Number 5972
AS Name DNIC-ASBLK-05800-06055
Organization United States Department of Defense (usddd)
Country US
Website defense.gov
Number of IPv4 Routes 1469
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 1995-10-24

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IP Ranges

Route # IPs
214.47.84.0/22 1024
160.151.112.0/23 512
214.1.121.0/24 256
214.2.112.0/23 512
139.38.86.0/23 512
214.75.160.0/23 512
164.250.24.0/22 1024
214.1.210.0/24 256
214.2.9.0/24 256
214.81.204.0/24 256
164.250.64.0/19 8192
164.251.232.0/21 2048
214.2.137.0/24 256
214.76.122.0/23 512
128.44.24.0/23 512
138.136.208.0/23 512
138.136.152.0/21 2048
214.1.181.0/24 256
139.39.88.0/22 1024
139.38.63.0/24 256
214.1.175.0/24 256
164.250.29.0/24 256
139.38.125.0/24 256
214.81.164.0/22 1024
144.18.60.0/23 512
160.151.72.0/22 1024
214.81.121.0/24 256
214.1.205.0/24 256
138.137.63.0/24 256
139.39.99.0/24 256
138.136.144.0/22 1024
139.39.98.0/24 256
214.78.0.0/17 32768
214.2.17.0/24 256
139.38.160.0/23 512
214.1.84.0/22 1024
138.137.120.0/21 2048
164.249.246.0/23 512
214.1.204.0/24 256
204.208.10.0/23 512
138.137.52.0/22 1024
138.138.136.0/21 2048
214.1.41.0/24 256
160.141.164.0/22 1024
139.38.32.0/23 512
214.79.192.0/19 8192
214.81.120.0/24 256
214.77.200.0/21 2048
164.250.123.0/24 256
214.2.231.0/24 256
214.1.36.0/24 256
199.10.192.0/24 256
214.76.210.0/23 512
214.1.180.0/24 256
139.38.124.0/24 256
164.250.168.0/22 1024
214.3.3.0/24 256
143.83.96.0/21 2048
139.39.242.0/24 256
214.2.76.0/24 256

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:       5800 - 6055
ASName:         DNIC-ASBLK-05800-06055
ASHandle:       AS5800
RegDate:        1995-10-24
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/5800



OrgName:        United States Department of Defense (DoD)
OrgId:          USDDD
Address:        3990 E. Broad Street
City:           Columbus
StateProv:      OH
PostalCode:     43218
Country:        US
RegDate:        2007-01-12
Updated:        2026-08-12
Ref:            https://rdap.arin.net/registry/entity/USDDD


OrgNOCHandle: MIL-HSTMST-ARIN
OrgNOCName:   Network DoD
OrgNOCPhone:  +1-844-347-2457 
OrgNOCEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgNOCRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgTechHandle: MIL-HSTMST-ARIN
OrgTechName:   Network DoD
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-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

OrgAbuseHandle: MIL-HSTMST-ARIN
OrgAbuseName:   Network DoD
OrgAbusePhone:  +1-844-347-2457 
OrgAbuseEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-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
AS27065 United States Department of Defense DoD US
AS27064 United States Department of Defense DoD US
AS27066 United States Department of Defense DoD US

Upstreams

AS Number Description Country
AS27065 United States Department of Defense DoD US
AS27064 United States Department of Defense DoD US
AS27066 United States Department of Defense DoD US

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Frequently Asked Questions

ASN AS5972 is an Autonomous System Number used to identify a network for BGP internet routing.
AS5972 is listed under United States Department of Defense.
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.