AS3373 — MCI-ASN

AS3373 announces 1 IPv4 prefixes covering 8,192 addresses and 0 IPv6 prefixes.

About this network

A legacy MCI autonomous system (MCI-ASN) held by Verizon Business. It is one of the quietest of the group, originating a single block from Verizon's inherited address space.

What it's used for

• Announcing one UUNET-era customer allocation within the Verizon Business network.

Notable

• Carrier-held address space rather than an independent organisation's network. A single-prefix ASN like this usually reflects a narrow, long-standing assignment rather than an active service platform.
• Registered in 1994 as part of the MCI-ASN family and carried into Verizon with the 2006 MCI acquisition, alongside AS3369, AS3371, AS3372 and AS3374.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 153.39.64.0/19

Upstream networks

• AS3371 Verizon Business

Adjacent networks

• AS3371 Verizon Business