Network topology

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

AS18402

Currently announcedSnapshot awaiting refresh

National Library Board · NLB-AS-SG-AP

Last observed9/30/2026, 22:14:33Open ASN profile →

AS18402 relationship topology

Showing 2 / 2

AS18402National Library Board

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS9255CONNECTPLUS-AS - Singapore Telecom

Relationship: Upstream
Observed weight: 771
ASN registration country: Singapore
Latest RIS data: 9/30/2026, 00:00:00

Open AS9255 profile →

All adjacent autonomous systems

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

2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS9255Observed weight 771	CONNECTPLUS-AS - Singapore Telecom	Upstream	Singapore	8/19/2019, 00:00:00	9/30/2026, 00:00:00	1,645	349
AS16509Observed weight 273	AMAZON-02 - Amazon.com, Inc.	Upstream	United States	8/19/2019, 00:00:00	9/30/2026, 00:00:00	335	0

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