Autonomous system
AS3375 MCI-ASN
Unclassified ARIN
Summary
Verizon Business (MCI)
transit isp legacy
A legacy MCI autonomous system (MCI-ASN), now held by Verizon Business
after Verizon's acquisition of MCI. It is one of a run of adjacent MCI ASNs that
Verizon still announces alongside its main backbone,
[AS701](https://asn.ipinfo.app/AS701).
What it's used for
- Announcing Verizon Business / MCI-era address space, largely customer and managed-service networks rather than backbone transit itself.
- Registered under Verizon Business's Ashburn, Virginia address, the same registrant as the rest of the Verizon Business ASN family.
Notable
- The ARIN record dates to 1994, so this is a genuine early allocation from the era when MCI was building out one of the internet's first commercial backbones.
- Carrier-assigned space: addresses here generally belong to organizations buying connectivity from Verizon, not to Verizon's own offices.
Interesting
- MCI ASNs cluster tightly in this range — [AS3376](https://asn.ipinfo.app/AS3376), [AS3377](https://asn.ipinfo.app/AS3377) and [AS3378](https://asn.ipinfo.app/AS3378) share the same
MCI-ASNhandle and the same corporate lineage.
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 | 9 |
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