ASN AS749 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS749?

AS749 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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AS749 United States Department of Defense

United States Department of Defense war.gov

US 3133 Routes

AS Data

AS749

AS749 – United States Department of Defense

AS Number	749
AS Name	DNIC-AS-00749
Organization	United States Department of Defense (usddd)
Country	US
Website	war.gov
Number of IPv4 Routes	3133
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	N/A

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
153.22.0.0/16	AS749	United States Department of Defense	DoD Network Information Center	65536
192.253.200.0/24	AS749	United States Department of Defense	United States Department of Defense DoD	256
29.16.247.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
146.55.126.0/24	AS749	United States Department of Defense	U.S. Army Information Systems Command	256
192.207.240.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
158.20.24.0/21	AS749	United States Department of Defense	U.S. Army Information Systems Command	2048
192.31.174.0/24	AS749	United States Department of Defense	Navy Network Information Center (NNIC)	256
198.55.88.0/22	AS749	United States Department of Defense	Navy Network Information Center (NNIC)	1024
205.3.4.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
140.13.136.0/23	AS5852	United States Department of Defense	DoD Network Information Center	512
198.97.60.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
22.162.219.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
140.19.104.0/21	AS749	United States Department of Defense	DoD Network Information Center	2048
155.20.68.0/24	AS749	United States Department of Defense	U.S. Army Information Systems Command	256
163.251.144.0/21	AS749	United States Department of Defense	Navy Network Information Center (NNIC)	2048
192.12.100.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
11.43.0.0/17	AS749	DoD Network Information Center	DoD Network Information Center	32768
22.185.142.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
140.12.64.0/18	AS749	United States Department of Defense	DoD Network Information Center	16384
164.117.82.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
192.104.158.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
21.0.0.0/8	AS749	United States Department of Defense	DoD Network Information Center	16777216
131.18.192.0/19	AS749	United States Department of Defense	Air Force Systems Networking	8192
199.10.196.0/22	AS749	United States Department of Defense	DoD Network Information Center	1024
139.40.164.0/22	AS5852	United States Department of Defense	DoD Network Information Center	1024
155.26.126.0/23	AS749	United States Department of Defense	U.S. Army Information Systems Command	512
11.5.40.0/21	AS749	DoD Network Information Center	DoD Network Information Center	2048
192.147.237.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
140.20.220.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
140.13.12.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
192.108.185.0/24	AS749	DoD Network Information Center	DoD Network Information Center	256
11.71.124.0/23	AS749	DoD Network Information Center	DoD Network Information Center	512
192.94.234.0/24	AS749	United States Department of Defense	Air Force Systems Networking	256
214.114.0.0/15	AS749	United States Department of Defense	United States Department of Defense DoD	131072
199.32.32.0/19	AS749	United States Department of Defense	DoD Network Information Center	8192
22.98.191.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
22.98.125.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
155.30.43.0/24	AS749	United States Department of Defense	U.S. Army Information Systems Command	256
6.160.0.0/11	AS749	United States Department of Defense DoD	U.S. Army Information Systems Command	2097152
151.125.0.0/16	AS749	United States Department of Defense	DoD Network Information Center	65536
22.23.52.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
192.172.208.0/21	AS749	United States Department of Defense	United States Department of Defense DoD	2048
163.251.100.0/24	AS749	United States Department of Defense	Navy Network Information Center (NNIC)	256
6.56.0.0/13	AS0			524288
139.40.155.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
131.158.61.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
21.23.7.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
22.45.114.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
139.40.228.0/22	AS749	United States Department of Defense	DoD Network Information Center	1024
140.18.0.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
163.251.178.0/23	AS749	United States Department of Defense	Navy Network Information Center (NNIC)	512
29.16.245.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
155.30.12.0/23	AS749	United States Department of Defense	U.S. Army Information Systems Command	512
134.229.0.0/21	AS749	United States Department of Defense	Navy Network Information Center (NNIC)	2048
156.112.150.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
140.19.134.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
150.149.48.0/21	AS749	United States Department of Defense	U.S. Army Information Systems Command	2048
205.4.0.0/23	AS749	United States Department of Defense	DoD Network Information Center	512
140.20.157.0/24	AS749	United States Department of Defense	DoD Network Information Center	256
198.250.2.0/23	AS749	United States Department of Defense	DoD Network Information Center	512

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:       749
ASName:         DNIC-AS-00749
ASHandle:       AS749
RegDate:        
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/749



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" : "749",
    "as_handle" : "AS749",
    "as_name" : "DNIC-AS-00749",
    "tech_contacts" : [ "REGIS10-ARIN", "MIL-HSTMST-ARIN" ],
    "abuse_contacts" : [ "MIL-HSTMST-ARIN" ],
    "date_updated" : "2025-09-12",
    "source" : "https://rdap.arin.net/registry/autnum/749"
  } ],
  "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
AS271253	LINK BRASIL TELECOMUNICACOES LTDA	BR
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US

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