Autonomous system
AS29885 UCHHS-AS
Unclassified ARIN
Summary
University of Chicago Hospitals & Health System
healthcare business education
The AS handle UCHHS-AS is held by University of Chicago Hospitals & Health System.
What it's used for
- The address space carries hospital and university infrastructure, evidenced by reverse DNS entries like
static-64-107-48-64.uchospitals.eduand netnamesU-CHICAGO-2andICN1. - The AS announces 65,792 IPv4 addresses across 2 prefixes and maintains 3 observed neighbours, a ratio consistent with an internal corporate or institutional estate rather than a transit provider.
Notable
- Registrants include The University of Chicago and Illinois Century Network, aligning with the hospital system's affiliation with the university.
- The address inventory consists of one large /16 block and one /24 block, indicating a consolidated internal network for the health system.
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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 65.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS29885- Registry name
- UCHHS-AS
- Registrant
- Univeristy of Chicago Hospitals & Health System
- Abuse contact
- martin.gramlick@uchicagomedicine.org
- Registered
- 2003-05-29
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 25% valid · 1 valid, 3 with no ROA
- ROAs
- 1 authorising AS29885
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 2 naming AS29885
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: 442 networks and 1,784 prefixes, as published 2026-10-19. 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