ASN Lookup Tool

United States Department of Defense defense.gov US US 127 Routes

AS Data

AS27066

AS27066 – United States Department of Defense

AS Number 27066
AS Name DNIC-ASBLK-27032-27159
Organization United States Department of Defense (usddd)
Country US
Website defense.gov
Number of IPv4 Routes 119
Number of IPv6 Routes 8
ASN type GOVERNMENT
Registry ARIN
Date Allocated 2003-01-16

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IP Ranges

Route # IPs
214.38.198.0/23 512
163.251.160.0/24 256
214.95.108.0/24 256
156.112.167.0/24 256
139.241.77.0/24 256
159.77.79.0/24 256
214.72.6.0/24 256
214.72.14.0/24 256
139.241.151.0/24 256
140.14.45.0/24 256
214.54.128.0/22 1024
163.251.208.0/24 256
134.229.176.0/24 256
159.77.46.0/24 256
139.241.74.0/24 256
214.48.72.0/22 1024
156.112.113.0/24 256
163.251.128.0/24 256
159.77.105.0/24 256
214.16.245.0/24 256
163.251.184.0/24 256
214.24.215.0/24 256
159.77.85.0/24 256
214.23.245.0/24 256
205.56.194.0/24 256
163.251.112.0/24 256
214.54.136.0/24 256
163.251.104.0/24 256
163.251.185.0/24 256
163.251.113.0/24 256
139.241.133.0/24 256
214.54.135.0/24 256
2608:c183:1::/48 ~1×10²⁴
139.241.139.0/24 256
139.241.134.0/24 256
2608:c143:1::/48 ~1×10²⁴
215.65.72.0/24 256
163.251.96.0/22 1024
159.77.106.0/24 256
199.32.31.0/24 256
155.7.180.0/24 256
215.1.84.0/24 256
163.251.161.0/24 256
214.4.241.0/24 256
159.77.104.0/24 256
215.1.33.0/24 256
139.241.148.0/24 256
163.251.244.0/22 1024
214.72.5.0/24 256
134.229.136.0/24 256
207.132.100.0/24 256
214.23.244.0/24 256
209.22.103.0/24 256
156.112.135.0/24 256
215.1.68.0/22 1024
156.112.114.0/24 256
214.48.76.0/22 1024
214.16.244.0/24 256
139.241.129.0/24 256
139.242.12.0/24 256

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:       27032 - 27159
ASName:         DNIC-ASBLK-27032-27159
ASHandle:       AS27032
RegDate:        2003-01-16
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/27032



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
AS3954 United States Department of Defense DoD US
AS1637 Headquarters, USAISC US
AS27153 United States Department of Defense DoD US
AS427 United States Air Force US
AS1649 Headquarters, USAISC US
AS637 United States Department of Defense US
AS647 United States Department of Defense US
AS5284 United States Department of Defense DoD US
AS6025 United States Department of Defense DoD US
AS747 U.S. Army Information Systems Command US
AS721 United States Department of Defense US
AS619 United States Department of Defense DoD US
AS27064 United States Department of Defense DoD US
AS405 Air Force Systems Networking US
AS316 United States Department of Defense US
AS27137 United States Department of Defense DoD US
AS1516 Headquarters, USAISC US
AS321 United States Department of Defense US
AS27149 United States Department of Defense DoD US
AS5860 United States Department of Defense DoD US
AS363 United States Department of Defense DoD US
AS27046 United States Department of Defense DoD US
AS306 United States Department of Defense US
AS5958 United States Department of Defense DoD US
AS1908 United States Department of Defense DoD US
AS665 United States Department of Defense US
AS5982 United States Department of Defense DoD US
AS337 United States Department of Defense US
AS399 United States Air Force US
AS5927 United States Department of Defense DoD US
AS409 United States Air Force US
AS5972 United States Department of Defense US
AS3916 Joint Intelligence Center Pacific US
AS1600 United States Department of Defense DoD US

Upstreams

AS Number Description Country
AS721 United States Department of Defense US
AS27064 United States Department of Defense DoD US

Downstreams

AS Number Description Country
AS3954 United States Department of Defense DoD US
AS1637 Headquarters, USAISC US
AS27153 United States Department of Defense DoD US
AS427 United States Air Force US
AS1649 Headquarters, USAISC US
AS637 United States Department of Defense US
AS647 United States Department of Defense US
AS5284 United States Department of Defense DoD US
AS6025 United States Department of Defense DoD US
AS747 U.S. Army Information Systems Command US

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Frequently Asked Questions

ASN AS27066 is an Autonomous System Number used to identify a network for BGP internet routing.
AS27066 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.