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 DoD.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS668 United States Department of Defense DoD

ASN Lookup Tool

United States Department of Defense DoD mail.mil

US 188 Routes

AS Data

AS668

AS668 – United States Department of Defense DoD

AS Number	668
AS Name	DNIC-AS-00668
Organization	United States Department of Defense DoD(usddd)
Country	US
Website	mail.mil
Number of IPv4 Routes	187
Number of IPv6 Routes	1
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1990-04-24

ASN Intelligence API for production workflows

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
192.5.21.0/24	AS668	United States Department of Defense DoD	United States Department of Defense DoD	256
199.209.144.0/22	AS668	United States Department of Defense DoD	DoD Network Information Center	1024
192.31.147.0/24	AS668	United States Department of Defense DoD	Navy Network Information Center NNIC	256
198.253.168.0/21	AS668	United States Department of Defense DoD	Navy Network Information Center NNIC	2048
131.92.184.0/23	AS668	United States Department of Defense DoD	Headquarters, USAISC	512
164.49.0.0/16	AS668	United States Department of Defense DoD	Headquarters, USAISC	65536
131.92.132.0/22	AS668	United States Department of Defense DoD	Headquarters, USAISC	1024
192.138.87.0/24	AS668	United States Department of Defense DoD	Navy Network Information Center NNIC	256
204.235.64.0/20	AS1508	Headquarters, USAISC	Headquarters, USAISC	4096
199.9.2.0/24	AS668	United States Department of Defense DoD	United States Department of Defense DoD	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:        2025-03-13
Ref:            https://rdap.arin.net/registry/entity/USDDD


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: 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

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


#
# 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
AS289	Headquarters, USAISC	US
AS22335	Metropolitan Research and Education Network	US
AS6939	Hurricane Electric LLC	US
AS121	United States Department of Defense (DoD)	US
AS6082	IPiFony Systems, Inc.	US
AS84	Navy Network Information Center (NNIC)	US
AS89	Navy Network Information Center (NNIC)	US
AS687	United States Department of Defense (DoD)	US
AS293	ESnet	US
AS4221	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
AS11537	Internet2	US
AS6360	University of Hawaii	US
AS6939	Hurricane Electric LLC	US
AS2914	NTT America, Inc.	US
AS701	Verizon Business	US
AS137409	GSL Networks Pty LTD	AU

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
AS37	Navy Network Information Center NNIC	US