ASN AS27137 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS27137?

AS27137 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?

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AS27137 United States Department of Defense DoD

United States Department of Defense DoD mail.mil

US 28 Routes

AS Data

AS27137

AS27137 – United States Department of Defense DoD

AS Number	27137
AS Name	DNIC-ASBLK-27032-27159
Organization	United States Department of Defense DoD (usddd)
Country	US
Website	mail.mil
Number of IPv4 Routes	28
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2003-01-16

ASN Intelligence API for production workflows

Use ASN data for AS27137 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.218.21.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.219.137.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.26.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
128.26.98.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.220.71.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
128.26.99.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.175.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.22.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.20.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.8.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
128.26.54.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
139.241.234.0/24	AS27137	United States Department of Defense DoD	DoD Network Information Center	256
214.51.16.0/21	AS27137	United States Department of Defense DoD	United States Department of Defense DoD	2048
205.73.180.0/23	AS27137	United States Department of Defense DoD	United States Department of Defense DoD	512
128.26.96.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
205.58.106.0/24	AS27137	United States Department of Defense DoD	United States Department of Defense DoD	256
128.26.88.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
128.26.40.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
214.6.250.0/24	AS27137	United States Department of Defense DoD	United States Department of Defense DoD	256
198.219.147.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
205.58.105.0/24	AS27137	United States Department of Defense DoD	United States Department of Defense DoD	256
128.26.95.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.65.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
128.26.97.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
128.26.38.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
214.25.177.0/24	AS27137	United States Department of Defense DoD	United States Department of Defense DoD	256
128.26.94.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	256
198.218.5.0/24	AS27137	United States Department of Defense DoD	Air Force Systems Networking	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:       27032 - 27159
ASName:         DNIC-ASBLK-27032-27159
ASHandle:       AS27032
RegDate:        2003-01-16
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/27032


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


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

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

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


#
# 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" : "27032 - 27159",
    "as_handle" : "AS27032",
    "as_name" : "DNIC-ASBLK-27032-27159",
    "tech_contacts" : [ "MIL-HSTMST-ARIN", "REGIS10-ARIN" ],
    "abuse_contacts" : [ "MIL-HSTMST-ARIN" ],
    "date_created" : "2003-01-16",
    "date_updated" : "2025-09-12",
    "source" : "https://rdap.arin.net/registry/autnum/27032"
  } ],
  "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" : "2025-03-13",
    "source" : "https://rdap.arin.net/registry/entity/USDDD",
    "addressCountry" : "US"
  },
  "technical_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"
  }, {
    "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"
  } ],
  "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
AS27066	United States Department of Defense (DoD)	US
AS3472	United States Department of Defense (DoD)	US
AS27066	United States Department of Defense DoD	US
AS3472	United States Department of Defense DoD	US

Upstreams

AS Number	Description	Country
AS27066	United States Department of Defense DoD	US

Downstreams

AS Number	Description	Country
AS3472	United States Department of Defense DoD	US

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