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Autonomous System details for AS228

AS228
United States Department of Defense (DoD) • mail.mil

AS228 — United States Department of Defense (DoD)

AS Name
DNIC-AS-00228
Country
United States (US)
Website
Number of IPv4
8,192
Number of IPv6
1.21 × 1024
ASN type
Government
Status
Assigned
Registry
ARIN
Allocated
September 08, 1988
Last updated
September 12, 2025

IP Ranges

4 IPv4 prefixes, 1 IPv6 prefixes
Prefix Company Number of IPs
147.241.48.0/21 Headquarters, USAISC 2,048
147.241.64.0/21 Headquarters, USAISC 2,048
147.241.136.0/21 Headquarters, USAISC 2,048
147.241.144.0/21 Headquarters, USAISC 2,048
2001:480:253::/48 High Performance Computing 1.21 × 1024

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 AS228

0 peers

AS228 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 AS228

1 upstreams

AS228 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS228 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS228

0 downstreams

AS228 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.

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