Autonomous system
AS36026 AS-CHI-CORP - CommonSpirit Health
Unclassified ARIN
Summary
CommonSpirit Health
healthcare business corporate us
AS-CHI-CORP is the autonomous system for CommonSpirit Health, the largest Catholic hospital chain in the United States.
What it's used for
- The address space carries internal corporate infrastructure for a major healthcare provider, evidenced by netnames such as
IMCOMAHA(Immanuel Medical Center),SJHMC(St. John's Health & Medical Center), andNETBLK-FHS-EAST. - The AS announces 11 IPv4 prefixes totaling 11,264 addresses with only 5 observed neighbours, a ratio that indicates a finely subdivided internal corporate estate rather than an access or transit network.
Notable
- Registrants largely align with the announcer, listing CommonSpirit Health, though some prefixes retain legacy registrants like IMMANUEL MEDICAL CENTER and Dignity Health; Catholic Healthcare West.
- CommonSpirit Health was formed in 2016 through the merger of Dignity Health and Catholic Health Initiatives, which explains the mixed registrant history in the inventory.
- The inventory consists of 11 distinct IPv4 blocks with no IPv6 prefixes, reflecting a segmented internal network structure across various care sites.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 11 prefixes · 11.26K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 11 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS36026- Registry name
- AS-CHI-CORP
- Registrant
- CommonSpirit Health
- Abuse contact
- ardit.murataj@commonspirit.org
- Registered
- 2005-07-28
- Last changed
- 2017-10-31
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 18 with no ROA
- ROAs
- 0 authorising AS36026
- ASPA
- no ASPA record
- IRR
- 11% registered · 2 of 18 announcements 2 other origin
- Route objects
- 2 naming AS36026
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: 447 networks and 1,843 prefixes, as published 2026-11-02. 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