All ASNs

Autonomous System details for AS5972

AS5972

United States Department of Defense (DoD) • mail.mil

AS5972 — United States Department of Defense (DoD)

AS Name

DNIC-ASBLK-05800-06055

Country

United States (US)

Website

mail.mil

Number of IPv4

2,288,128

Number of IPv6

ASN type

Government

Status

Assigned

Registry

ARIN

Allocated

October 24, 1995

Last updated

September 12, 2025

IP Ranges

1,433 IPv4 prefixes

Prefix	Company	Number of IPs
128.44.0.0/16	Headquarters, USAISC	65,536
128.44.11.0/24	Headquarters, USAISC	256
128.44.13.0/24	Headquarters, USAISC	256
128.44.14.0/23	Headquarters, USAISC	512
128.44.16.0/23	Headquarters, USAISC	512
128.44.18.0/24	Headquarters, USAISC	256
128.44.24.0/23	Headquarters, USAISC	512
128.44.26.0/23	Headquarters, USAISC	512
128.44.32.0/20	Headquarters, USAISC	4,096
128.44.48.0/21	Headquarters, USAISC	2,048
128.44.56.0/22	Headquarters, USAISC	1,024
128.44.60.0/23	Headquarters, USAISC	512
128.44.62.0/23	Headquarters, USAISC	512
128.44.64.0/22	Headquarters, USAISC	1,024
128.44.68.0/23	Headquarters, USAISC	512
128.44.116.0/23	Headquarters, USAISC	512
128.44.128.0/19	Headquarters, USAISC	8,192
128.44.160.0/22	Headquarters, USAISC	1,024
128.44.168.0/23	Headquarters, USAISC	512
128.44.170.0/23	Headquarters, USAISC	512
128.44.172.0/22	Headquarters, USAISC	1,024
128.44.188.0/22	Headquarters, USAISC	1,024
128.44.196.0/22	Headquarters, USAISC	1,024
128.44.200.0/22	Headquarters, USAISC	1,024
128.44.208.0/20	Headquarters, USAISC	4,096
128.44.224.0/20	Headquarters, USAISC	4,096
128.44.240.0/21	Headquarters, USAISC	2,048
138.136.0.0/23		512
138.136.2.0/24		256
138.136.3.0/24		256
138.136.4.0/22		1,024
138.136.8.0/22		1,024
138.136.12.0/24		256
138.136.13.0/24		256
138.136.14.0/23		512
138.136.16.0/23		512
138.136.18.0/24		256
138.136.19.0/24		256
138.136.20.0/22		1,024
138.136.24.0/24		256
138.136.25.0/24		256
138.136.26.0/23		512
138.136.28.0/23		512
138.136.30.0/24		256
138.136.31.0/24		256
138.136.32.0/23		512
138.136.34.0/23		512
138.136.36.0/23		512
138.136.38.0/24		256
138.136.39.0/24		256
138.136.40.0/22		1,024
138.136.44.0/23		512
138.136.46.0/24		256
138.136.47.0/24		256
138.136.48.0/23		512
138.136.50.0/24		256
138.136.51.0/24		256
138.136.52.0/22		1,024
138.136.56.0/23		512
138.136.58.0/24		256
138.136.59.0/24		256
138.136.60.0/22		1,024
138.136.64.0/23		512
138.136.66.0/23		512
138.136.68.0/23		512
138.136.71.0/24		256
138.136.72.0/21		2,048
138.136.80.0/21		2,048
138.136.88.0/23		512
138.136.89.0/24		256
138.136.90.0/23		512
138.136.92.0/22		1,024
138.136.96.0/21		2,048
138.136.104.0/23		512
138.136.106.0/24		256
138.136.107.0/24		256
138.136.108.0/24		256
138.136.109.0/24		256
138.136.110.0/23		512
138.136.112.0/21		2,048
138.136.120.0/21		2,048
138.136.129.0/24		256
138.136.130.0/24		256
138.136.131.0/24		256
138.136.132.0/24		256
138.136.133.0/24		256
138.136.135.0/24		256
138.136.136.0/24		256
138.136.138.0/24		256
138.136.139.0/24		256
138.136.140.0/23		512
138.136.142.0/24		256
138.136.143.0/24		256
138.136.144.0/22		1,024
138.136.148.0/22		1,024
138.136.152.0/21		2,048
138.136.160.0/20		4,096
138.136.176.0/22		1,024
138.136.180.0/23		512
138.136.182.0/23		512

This table only shows the first 100 of the set of IPv4 and IPv6 prefixes. All data is available via our IP data API.

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS5972

0 peers

AS5972 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS5972

3 upstreams

AS27064 AS27065 AS27066

AS5972 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS5972 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS5972

0 downstreams

AS5972 has no downstreams recorded.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.