Network topology

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

AS33727

Currently announcedSnapshot awaiting refresh

Sumofiber · SUMOFIBER-BOZEMAN

Last observed10/2/2026, 16:05:10Open ASN profile →

AS33727 relationship topology

Showing 3 / 3

AS33727Sumofiber

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS4226SUMOFIBER - Sumofiber

Relationship: Downstream
Observed weight: 250
ASN registration country: United States
Latest RIS data: 11/2/2026, 00:00:00

Open AS4226 profile →

All adjacent autonomous systems

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

3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS4226Observed weight 250	SUMOFIBER - Sumofiber	Downstream	United States	8/21/2019, 00:00:00	11/2/2026, 00:00:00	0	336
AS6461Observed weight 250	ZAYO-6461 - Zayo Bandwidth	Upstream	United States	8/21/2019, 00:00:00	11/2/2026, 00:00:00	0	336
AS62494Observed weight 135	YELLOWSTONE-FIBER - UTOPIA	Upstream	United States	8/21/2019, 00:00:00	11/2/2026, 00:00:00	178	0

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