Network topology

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

AS31770

Currently announcedSnapshot awaiting refresh

Ann & Robert H. Lurie Children's Hospital of Chicago · CMMC-I2

Last observed10/2/2026, 10:22:25Open ASN profile →

AS31770 relationship topology

Showing 3 / 3

AS31770Ann & Robert H. Lurie C…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS13499CH-ENT-DC-IL - NEW CCH, LLC

Relationship: Upstream
Observed weight: 259
ASN registration country: United States
Latest RIS data: 10/2/2026, 00:00:00

Open AS13499 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
AS13499Observed weight 259	CH-ENT-DC-IL - NEW CCH, LLC	Upstream	United States	8/21/2019, 00:00:00	10/2/2026, 00:00:00	2,100
AS6461Observed weight 258	ZAYO-6461 - Zayo Bandwidth	Upstream	United States	8/21/2019, 00:00:00	10/2/2026, 00:00:00	672
AS22335Observed weight 11	MREN - Metropolitan Research and Education Network	Upstream	United States	8/21/2019, 00:00:00	10/2/2026, 00:00:00	11

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