Network topology

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

AS42427

Currently announcedSnapshot awaiting refresh

Mimecast Services Limited · MIMECAST-UK

Last observed10/3/2026, 14:47:39Open ASN profile →

AS42427 relationship topology

Showing 3 / 3

AS42427Mimecast Services Limit…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS3356LEVEL3 - Level 3 Parent, LLC

Relationship: Upstream
Observed weight: 298
ASN registration country: United States
Latest RIS data: 10/31/2026, 00:00:00

Open AS3356 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
AS3356Observed weight 298	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/23/2019, 00:00:00	10/31/2026, 00:00:00	1,438	259
AS6461Observed weight 236	ZAYO-6461 - Zayo Bandwidth	Upstream	United States	8/23/2019, 00:00:00	10/31/2026, 00:00:00	2,207	348
AS2914Observed weight 82	NTT-DATA-2914 - NTT America, Inc.	Upstream	United States	8/23/2019, 00:00:00	10/31/2026, 00:00:00	436	57

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