ASN Lookup Tool

United States Department of Defense war.gov US US 530 Routes

AS Data

AS637

AS637 – United States Department of Defense

AS Number 637
AS Name DNIC-ASBLK-00616-00665
Organization United States Department of Defense (usddd)
Country US
Website war.gov
Number of IPv4 Routes 530
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 1990-04-19

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IP Ranges

Route # IPs
158.243.168.0/24 256
158.244.0.0/18 16384
138.167.120.0/21 2048
214.44.136.0/24 256
214.44.81.0/24 256
158.243.75.0/24 256
158.243.45.0/24 256
214.43.10.0/24 256
137.234.208.0/24 256
158.243.51.0/24 256
158.243.203.0/24 256
158.243.198.0/24 256
205.109.126.0/23 512
138.163.160.0/22 1024
158.243.144.0/24 256
192.156.56.0/23 512
138.167.85.0/24 256
158.244.64.0/18 16384
138.167.0.0/20 4096
158.243.39.0/24 256
158.245.128.0/18 16384
138.167.206.0/24 256
158.243.114.0/24 256
158.240.216.0/23 512
158.243.180.0/24 256
214.45.246.0/24 256
158.243.108.0/23 512
158.243.139.0/24 256
205.110.116.0/23 512
138.167.79.0/24 256
205.110.240.0/24 256
158.240.48.0/22 1024
205.109.8.0/23 512
158.243.80.0/24 256
204.223.136.0/21 2048
158.243.167.0/24 256
158.243.74.0/24 256
138.167.176.0/20 4096
205.109.192.0/20 4096
138.157.207.0/24 256
158.243.81.0/24 256
158.243.204.0/24 256
158.243.52.0/24 256
214.44.143.0/24 256
214.43.1.0/24 256
158.243.15.0/24 256
158.240.133.0/24 256
138.157.64.0/23 512
158.243.173.0/24 256
205.110.60.0/24 256
204.223.44.0/22 1024
138.167.200.0/22 1024
158.243.82.0/24 256
138.157.119.0/24 256
205.109.160.0/19 8192
158.240.132.0/24 256
137.234.64.0/22 1024
158.243.44.0/24 256
158.243.210.0/24 256
137.235.128.0/22 1024

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:       616 - 665
ASName:         DNIC-ASBLK-00616-00665
ASHandle:       AS616
RegDate:        1990-04-19
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/616



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

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 AS637 is an Autonomous System Number used to identify a network for BGP internet routing.
AS637 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.