All ASNs

Autonomous System details for AS391

AS391

Air Force Systems Networking • mail.mil

AS391 — Air Force Systems Networking

AS Name

AFCONC-BLOCK1-AS

Country

United States (US)

Website

mail.mil

Number of IPv4

284,928

Number of IPv6

ASN type

Government

Status

Assigned

Registry

ARIN

Allocated

August 04, 1989

Last updated

June 06, 2008

IP Ranges

36 IPv4 prefixes

Prefix	Company	Number of IPs
128.202.0.0/16	Air Force Systems Networking	65,536
128.236.0.0/16	Air Force Systems Networking	65,536
131.15.38.0/23	Air Force Systems Networking	512
131.15.40.0/21	Air Force Systems Networking	2,048
131.15.48.0/20	Air Force Systems Networking	4,096
131.15.64.0/20	Air Force Systems Networking	4,096
131.15.80.0/24	Air Force Systems Networking	256
131.15.90.0/23	Air Force Systems Networking	512
131.15.92.0/24	Air Force Systems Networking	256
131.15.98.0/23	Air Force Systems Networking	512
131.15.120.0/24	Air Force Systems Networking	256
131.15.136.0/24	Air Force Systems Networking	256
131.15.144.0/21	Air Force Systems Networking	2,048
131.15.160.0/21	Air Force Systems Networking	2,048
131.15.208.0/24	Air Force Systems Networking	256
131.15.233.0/24	Air Force Systems Networking	256
131.15.234.0/24	Air Force Systems Networking	256
131.15.235.0/24	Air Force Systems Networking	256
131.15.236.0/24	Air Force Systems Networking	256
131.15.237.0/24	Air Force Systems Networking	256
131.15.238.0/24	Air Force Systems Networking	256
131.15.239.0/24	Air Force Systems Networking	256
131.15.252.0/24	Air Force Systems Networking	256
131.15.253.0/24	Air Force Systems Networking	256
137.0.0.0/16	Air Force Systems Networking	65,536
137.11.0.0/16	Air Force Systems Networking	65,536
143.141.96.0/22	Air Force Systems Networking	1,024
199.31.2.0/24		256
199.31.3.0/24		256
199.251.155.0/24		256
199.251.156.0/24		256
204.34.211.0/24		256
206.39.56.0/24		256
206.39.58.0/24		256
207.133.179.0/24		256
207.133.189.0/24		256

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 AS391

0 peers

AS391 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 AS391

1 upstreams

AS27064

AS391 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS391 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS391

0 downstreams

AS391 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.