ASN Lookup Tool
AS391 Air Force Systems Networking

An Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.

ASN Details

ASN
AS391
Organisation
Air Force Systems Networking
AS Name
AFCONC-BLOCK1-AS
IPv4 Addresses Announced
56,320
IPv4 Prefixes Announced
10
Bogon Prefixes Announced
0
IPv4 Space Rank
#3,995 out of 74,203
Registry
ARIN
Registered Country
US flag US
Registration Date
1989-08-04
Registration Change
2008-06-06

Receiving From

ASN
Organisation
ASN
Organisation
US flag DoD Network Information Center

Active Prefixes