ASN AS668 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS668?

AS668 is listed under United States Department of Defense.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS668 United States Department of Defense

United States Department of Defense war.gov

US 194 Routes

AS Data

AS668

AS668 – United States Department of Defense

AS Number	668
AS Name	DNIC-AS-00668
Organization	United States Department of Defense (usddd)
Country	US
Website	war.gov
Number of IPv4 Routes	192
Number of IPv6 Routes	1
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1990-04-24

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Use ASN data for AS668 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
164.122.0.0/20	AS668	United States Department of Defense	Air Force Systems Networking	4096
198.154.176.0/23	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	512
131.92.144.0/21	AS668	United States Department of Defense	U.S. Army Information Systems Command	2048
204.222.6.0/23	AS668	United States Department of Defense	DoD Network Information Center	512
198.97.236.0/24	AS668	United States Department of Defense	United States Department of Defense	256
199.9.0.0/24	AS668	United States Department of Defense	United States Department of Defense	256
199.31.107.0/24	AS668	United States Department of Defense	DoD Network Information Center	256
6.2.112.0/22	AS0			1024
206.37.28.0/23	AS668	United States Department of Defense	DoD Network Information Center	512
205.66.100.0/22	AS668	United States Department of Defense	United States Department of Defense	1024
147.241.126.0/24	AS668	United States Department of Defense	U.S. Army Information Systems Command	256
164.49.0.0/16	AS668	United States Department of Defense	U.S. Army Information Systems Command	65536
164.191.0.0/16	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	65536
204.238.129.0/24	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	256
130.109.0.0/16	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	65536
134.166.138.0/24	AS668	United States Department of Defense	Air Force Systems Networking	256
131.214.0.0/16	AS668	United States Department of Defense	Air Force Systems Networking	65536
192.171.12.0/24	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	256
198.253.192.0/20	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	4096
206.37.252.0/24	AS668	United States Department of Defense	DoD Network Information Center	256
147.241.96.0/22	AS668	United States Department of Defense	U.S. Army Information Systems Command	1024
129.92.0.0/16	AS668	United States Department of Defense	Air Force Systems Networking	65536
147.241.120.0/22	AS668	United States Department of Defense	U.S. Army Information Systems Command	1024
155.148.128.0/18	AS668	United States Department of Defense	U.S. Army Information Systems Command	16384
140.27.8.0/22	AS668	United States Department of Defense	DoD Network Information Center	1024
192.31.147.0/24	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	256
192.12.124.0/24	AS668	DoD Network Information Center	U.S. Army Information Systems Command	256
131.92.182.0/23	AS668	United States Department of Defense	U.S. Army Information Systems Command	512
198.253.168.0/21	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	2048
147.241.80.0/21	AS668	United States Department of Defense	U.S. Army Information Systems Command	2048
207.132.147.0/24	AS668	United States Department of Defense	DoD Network Information Center	256
140.6.0.0/16	AS668	United States Department of Defense	DoD Network Information Center	65536
155.154.0.0/16	AS668	United States Department of Defense	U.S. Army Information Systems Command	65536
198.253.110.0/24	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	256
204.44.136.0/23	AS668	United States Department of Defense	DoD Network Information Center	512
131.218.0.0/16	AS668	United States Department of Defense	U.S. Army Information Systems Command	65536
131.92.168.0/21	AS668	United States Department of Defense	U.S. Army Information Systems Command	2048
199.123.113.0/24	AS668	United States Department of Defense	United States Department of Defense	256
134.164.220.0/24	AS668	United States Department of Defense	U.S. Army Information Systems Command	256
192.42.141.0/24	AS668	United States Department of Defense	Air Force Systems Networking	256
192.175.87.0/24	AS668	United States Department of Defense	Air Force Systems Networking	256
129.229.0.0/16	AS668	United States Department of Defense	U.S. Army Information Systems Command	65536
199.9.1.0/24	AS668	United States Department of Defense	Naval Research Laboratory, Marine	256
147.248.48.0/20	AS668	United States Department of Defense	U.S. Army Information Systems Command	4096
198.253.56.0/24	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	256
155.148.192.0/19	AS668	United States Department of Defense	U.S. Army Information Systems Command	8192
130.163.0.0/16	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	65536
199.209.144.0/22	AS668	United States Department of Defense	DoD Network Information Center	1024
199.9.2.0/24	AS668	United States Department of Defense	United States Department of Defense	256
198.154.24.0/23	AS668	United States Department of Defense	NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION	512
6.2.0.0/18	AS668	United States Department of Defense DoD	U.S. Army Information Systems Command	16384
131.92.162.0/23	AS668	United States Department of Defense	U.S. Army Information Systems Command	512
131.92.164.0/22	AS668	United States Department of Defense	U.S. Army Information Systems Command	1024
214.10.25.0/24	AS668	United States Department of Defense	United States Department of Defense	256
147.241.160.0/21	AS668	United States Department of Defense	U.S. Army Information Systems Command	2048
131.250.192.0/20	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	4096
140.178.0.0/16	AS668	United States Department of Defense	Navy Network Information Center (NNIC)	65536
155.29.152.0/21	AS668	United States Department of Defense	U.S. Army Information Systems Command	2048
204.222.64.0/21	AS668	United States Department of Defense	DoD Network Information Center	2048
199.10.20.0/24	AS668	United States Department of Defense	United States Department of Defense	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:       668
ASName:         DNIC-AS-00668
ASHandle:       AS668
RegDate:        1990-04-24
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/668



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

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

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

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


#
# 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

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "668",
    "as_handle" : "AS668",
    "as_name" : "DNIC-AS-00668",
    "tech_contacts" : [ "REGIS10-ARIN", "MIL-HSTMST-ARIN" ],
    "abuse_contacts" : [ "MIL-HSTMST-ARIN" ],
    "date_created" : "1990-04-24",
    "date_updated" : "2025-09-12",
    "source" : "https://rdap.arin.net/registry/autnum/668"
  } ],
  "organization" : {
    "handle" : "USDDD",
    "name" : "United States Department of Defense (DoD)",
    "address" : [ "3990 E. Broad Street", "Columbus", "OH", "43218", "US" ],
    "street" : "E. Broad Street",
    "city" : "Columbus",
    "state" : "OH",
    "zip_code" : "43218",
    "country" : [ "US" ],
    "date_created" : "2007-01-12",
    "date_updated" : "2026-08-12",
    "source" : "https://rdap.arin.net/registry/entity/USDDD",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "REGIS10-ARIN",
    "name" : "Registration",
    "email" : [ "disa.columbus.ns.mbx.arin-registrations@mail.mil" ],
    "phone" : [ "+1-844-347-2457" ],
    "source" : "https://rdap.arin.net/registry/entity/REGIS10-ARIN"
  }, {
    "handle" : "MIL-HSTMST-ARIN",
    "name" : "Network DoD",
    "email" : [ "disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil" ],
    "phone" : [ "+1-844-347-2457" ],
    "source" : "https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "MIL-HSTMST-ARIN",
    "name" : "Network DoD",
    "email" : [ "disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil" ],
    "phone" : [ "+1-844-347-2457" ],
    "source" : "https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS289	Headquarters, USAISC	US
AS22335	Metropolitan Research and Education Network	US
AS252	Headquarters, USAISC	US
AS687	United States Department of Defense DoD	US
AS40300	DR Fortress, LLC	US
AS5957	United States Department of Defense DoD	US
AS213	Headquarters, USAISC	US
AS6939	Hurricane Electric LLC	US
AS101	University of Washington	US
AS2914	NTT America, Inc.	US
AS121	United States Department of Defense DoD	US
AS19035	Hawaii Internet Exchange	US
AS366	United States Department of Defense DoD	US
AS293	ESnet	US
AS4221	United States Department of Defense DoD	US
AS36236	NetActuate, Inc	US
AS3381	Maui High Performance Computing Center	US
AS5887	United States Department of Defense DoD	US
AS37	Navy Network Information Center NNIC	US
AS5132	United States Department of Defense DoD	US
AS6009	United States Department of Defense DoD	US
AS393399	Sandia National Laboratories	US
AS2621	United States Department of Defense DoD	US
AS22	Navy Network Information Center NNIC	US
AS5058	Navy Network Information Center NNIC	US
AS2153	CENIC	US
AS5978	United States Department of Defense DoD	US
AS89	Navy Network Information Center NNIC	US
AS228	United States Department of Defense DoD	US
AS10764	University of Illinois	US
AS13	Headquarters, USAISC	US
AS11537	Internet2	US
AS6043	United States Department of Defense DoD	US
AS1508	Headquarters, USAISC	US
AS518	United States Department of Defense DoD	US
AS7575	Australian Academic and Research Network	AU
AS48	Navy Network Information Center NNIC	US
AS6360	University of Hawaii	US
AS84	Navy Network Information Center NNIC	US
AS35889	University of Hawaii	US
AS701	Verizon Business	US
AS5980	United States Department of Defense DoD	US

Upstreams

AS Number	Description	Country
AS22335	Metropolitan Research and Education Network	US
AS7575	Australian Academic and Research Network	AU
AS10764	University of Illinois	US
AS11537	Internet2	US
AS6939	Hurricane Electric LLC	US
AS6360	University of Hawaii	US
AS35889	University of Hawaii	US
AS2914	NTT America, Inc.	US
AS701	Verizon Business	US

Downstreams

AS Number	Description	Country
AS289	Headquarters, USAISC	US
AS252	Headquarters, USAISC	US
AS687	United States Department of Defense DoD	US
AS5957	United States Department of Defense DoD	US
AS213	Headquarters, USAISC	US
AS121	United States Department of Defense DoD	US
AS366	United States Department of Defense DoD	US
AS4221	United States Department of Defense DoD	US
AS3381	Maui High Performance Computing Center	US
AS5887	United States Department of Defense DoD	US
AS37	Navy Network Information Center NNIC	US
AS5132	United States Department of Defense DoD	US
AS6009	United States Department of Defense DoD	US
AS393399	Sandia National Laboratories	US
AS2621	United States Department of Defense DoD	US
AS22	Navy Network Information Center NNIC	US
AS5058	Navy Network Information Center NNIC	US
AS5978	United States Department of Defense DoD	US
AS89	Navy Network Information Center NNIC	US
AS228	United States Department of Defense DoD	US
AS13	Headquarters, USAISC	US
AS6043	United States Department of Defense DoD	US
AS1508	Headquarters, USAISC	US
AS518	United States Department of Defense DoD	US
AS48	Navy Network Information Center NNIC	US
AS84	Navy Network Information Center NNIC	US
AS5980	United States Department of Defense DoD	US

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