3.172.28.0/24 — Whisper Internet Directory

IPv4 prefix

3.172.28.0/24(US)

Last fetched Thu, 21 May 2026 05:04:18 GMT

3.172.28.0/24 is an IPv4 announced prefix originated by AS16509 (AMAZON-02 - Amazon.com, Inc.), allocated to US.

Nutrition Label

Announcing ASN

AS16509AMAZON-02 - Amazon.com, Inc.

MOAS conflicts

No active MOAS conflicts for 3.172.28.0/24. This prefix is announced by its registered originator only.

Sample IPs

No IPv4 addresses are currently observed inside 3.172.28.0/24. Possible dark prefix or unobserved address space.

Related pages

Pivot deeper into the graph from 3.172.28.0/24.

Cypher and MCP

Reproduce the prefix profile directly against graph.whisper.security:

MATCH (ap:ANNOUNCED_PREFIX {name: "3.172.28.0/24"})
OPTIONAL MATCH (ap)-[:ROUTES]->(asn:ASN)
OPTIONAL MATCH (asn)-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (ap)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN ap.name AS cidr,
       asn.name AS asn,
       n.name AS network,
       c.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.