Autonomous system
AS3376 MCI-ASN
Unclassified ARIN
Summary
Verizon Business (MCI)
transit isp legacy
One of the legacy MCI autonomous systems (MCI-ASN), inherited by Verizon
Business when Verizon acquired MCI. It sits in a block of consecutive MCI ASNs
that still ride alongside the main Verizon backbone,
[AS701](https://asn.ipinfo.app/AS701).
What it's used for
- Announcing a small set of MCI-era prefixes on behalf of Verizon Business and its customers.
- Not a general-purpose transit ASN in its own right — the heavy lifting is done by AS701.
Notable
- Registered to Verizon Business in Ashburn, Virginia; the ARIN record traces back to the mid-1990s, when MCI ran one of the earliest commercial internet backbones.
- Address space announced here is carrier-assigned, so it typically maps to business customers rather than to Verizon itself.
Interesting
- The neighbouring numbers [AS3375](https://asn.ipinfo.app/AS3375), [AS3377](https://asn.ipinfo.app/AS3377) and [AS3378](https://asn.ipinfo.app/AS3378) carry the identical
MCI-ASNhandle — a fossil of how MCI reserved a run of ASNs at once.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3369- Registry name
- MCI-ASN
- Registrant
- Verizon Business
- Abuse contact
- abuse@verizon.com
- Registered
- 1994-01-06
- Last changed
- 2024-07-02
- Status
- active
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere