asn.dev

Autonomous system

AS46233 EMC-159 - Eisenhower Medical Center

Unclassified ARIN

IPv4 addresses 32.77K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Eisenhower Health

United States of America · AI-generated

healthcare business internal

EMC-159 is held by Eisenhower Health.

What it's used for

  • The address space carries internal corporate traffic, evidenced by the consistent netname EMC and registrant Eisenhower Medical Center across all prefixes.
  • The network announces 32768 IPv4 addresses across 8 prefixes with only 2 observed neighbours, indicating a small, self-contained internal estate rather than a transit or access provider.
  • Traffic from this AS consists of office workers, clinical systems, and administrative endpoints for the nonprofit teaching hospital based in Rancho Mirage, California.

Notable

  • All registrants agree with the announcer, listing Eisenhower Medical Center and EMC NETWORK for every prefix.
  • The operator was formerly known as Eisenhower Medical Center and is now known as Eisenhower Health.
  • The inventory consists of a contiguous block of 8 IPv4 prefixes within the 159.141.0.0/16 range, with no IPv6 prefixes announced.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS20001Charter Communications Inc60
AS395148PACIFIC LIGHTWAVE, A CALIFORNIA CORPORATION7

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-02, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 32.77K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS46233
Registry name
EMC-159
Registrant
Eisenhower Medical Center
Abuse contact
netadmins@emc.org
Registered
2024-05-14
Last changed
2024-05-14
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS46233
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS46233

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 448 networks and 1,851 prefixes, as published 2026-11-03. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check