ASN Lookup Tool

United States Air Force af.mil US US 38 Routes

AS Data

AS391

AS391 – United States Air Force

AS Number 391
AS Name AFCONC-BLOCK1-AS
Organization United States Air Force (7esg)
Country US
Website af.mil
Number of IPv4 Routes 38
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 1989-08-04

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IP Ranges

Route # IPs
131.15.160.0/21 2048
131.15.235.0/24 256
131.15.90.0/23 512
131.15.88.0/24 256
128.236.0.0/16 65536
131.15.144.0/21 2048
137.11.0.0/16 65536
131.15.92.0/24 256
199.31.3.0/24 256
199.251.155.0/24 256
131.15.120.0/24 256
131.15.252.0/24 256
131.15.238.0/24 256
131.15.253.0/24 256
143.141.96.0/22 1024
199.251.156.0/24 256
131.15.234.0/24 256
131.15.48.0/20 4096
131.15.119.0/24 256
206.39.56.0/24 256
131.15.237.0/24 256
131.15.80.0/24 256
131.15.208.0/24 256
199.31.2.0/24 256
128.202.0.0/16 65536
204.34.211.0/24 256
131.15.233.0/24 256
131.15.38.0/23 512
137.0.0.0/16 65536
131.15.98.0/23 512
131.15.64.0/20 4096
131.15.136.0/24 256
206.39.58.0/24 256
131.15.236.0/24 256
207.133.189.0/24 256
131.15.239.0/24 256
207.133.179.0/24 256
131.15.40.0/21 2048

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:       379 - 508
ASName:         AFCONC-BLOCK1-AS
ASHandle:       AS379
RegDate:        1989-08-04
Updated:        2008-06-06
Ref:            https://rdap.arin.net/registry/autnum/379


OrgName:        Air Force Systems Networking
OrgId:          7ESG
Address:        501 EAST MOORE DR. BLDG 884 RM 1100 GUNTHER ANNEX
City:           MAXWELL AFB
StateProv:      AL
PostalCode:     36114
Country:        US
RegDate:        2008-06-05
Updated:        2026-08-12
Ref:            https://rdap.arin.net/registry/entity/7ESG


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: REGIS10-ARIN
OrgAbuseName:   Registration
OrgAbusePhone:  +1-844-347-2457 
OrgAbuseEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgAbuseRef:    https://rdap.arin.net/registry/entity/REGIS10-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
AS27064 United States Department of Defense DoD US

Upstreams

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

Legacy Routes

137.14.110.0/23 132.28.127.0/24 132.50.47.0/24 132.28.40.0/24 137.14.138.0/24 131.44.251.0/24 137.240.250.0/24 137.14.238.0/24 131.44.248.0/24 131.60.240.0/21 137.14.239.0/24 137.14.139.0/24 137.14.240.0/21 132.35.120.0/24 137.14.208.0/21 132.50.46.0/24 132.28.128.0/23 137.6.160.0/20 131.62.120.0/24 132.28.130.0/24 131.44.249.0/24 131.44.120.0/24 192.190.107.0/24 131.44.121.0/24 132.35.0.0/16 132.28.19.0/24 131.18.128.0/24 137.14.207.0/24 132.28.38.0/23 132.28.0.0/16 131.44.247.0/24 137.6.192.0/20 137.14.75.0/24 132.17.64.0/20 137.14.127.0/24 131.62.168.0/24 132.50.58.0/24 131.44.0.0/16 132.28.108.0/24 137.14.191.0/24 137.14.122.0/24 131.105.0.0/16 137.14.121.0/24 137.14.128.0/21 137.14.206.0/24 137.14.137.0/24 137.14.200.0/23 132.28.80.0/21 132.28.250.0/24 131.62.158.0/24 132.28.253.0/24 132.28.168.0/21 137.14.112.0/21 132.28.45.0/24 132.50.48.0/21 132.28.165.0/24 132.28.26.0/24 132.28.166.0/23 131.62.112.0/21 131.44.32.0/21 132.28.252.0/24 137.14.216.0/22 132.28.29.0/24 131.44.4.0/24 132.28.32.0/24 131.44.64.0/22 137.14.202.0/24 192.43.253.0/24 137.14.248.0/24 131.44.255.0/24 131.60.220.0/24 132.50.57.0/24 136.149.0.0/16 132.28.254.0/24 132.28.251.0/24 131.62.110.0/23 132.26.127.0/24 132.17.160.0/20 131.62.159.0/24 132.28.76.0/22 132.17.48.0/20 137.14.192.0/21 131.61.0.0/16 132.28.255.0/24 198.218.102.0/24 132.17.192.0/20 131.62.169.0/24 137.14.136.0/24 137.14.190.0/24 132.17.176.0/20 131.61.211.0/24 131.62.170.0/24 132.28.75.0/24 137.14.120.0/24 132.28.248.0/24 198.218.108.0/24 137.14.249.0/24 131.62.160.0/21 132.39.32.0/20 137.14.126.0/24 132.50.56.0/24

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Frequently Asked Questions

ASN AS391 is an Autonomous System Number used to identify a network for BGP internet routing.
AS391 is listed under United States Air Force.
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.