Network topology

Relationships come from RIS AS_PATH observations; direction represents path position, not a commercial contract or traffic direction.

AS3378

Currently announcedSnapshot awaiting refresh

MCI-ASN - Verizon Business · MCI-ASN

Last observed9/29/2026, 10:32:48Open ASN profile →

AS3378 relationship topology

Showing 4 / 4

AS3378Verizon Business

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS701UUNET - Verizon Business

Relationship: Upstream
Observed weight: 4,127
ASN registration country: United States
Latest RIS data: 10/13/2026, 00:00:00

Open AS701 profile →

All adjacent autonomous systems

The table preserves every relationship in the selected filter; graph limits and pagination never remove data.

4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS701Observed weight 4,127	UUNET - Verizon Business	Upstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	67,815	1,324
AS3371Observed weight 1,715	MCI-ASN - Verizon Business	Downstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	11,959	992
AS3372Observed weight 1,260	MCI-ASN - Verizon Business	Downstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	38,572	332
AS3377Observed weight 303	MCI-ASN - Verizon Business	Downstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	4,660	0

CHA.LA ASN relationship snapshotRelationships are normalized by CHA.LA from collected routing observations and registration context.CHA.LA routing observations · registration context