Autonomous system
AS31770 CMMC-I2
Unclassified ARIN
Summary
Ann & Robert H. Lurie Children's Hospital of Chicago
hospital business healthcare us
The AS handle CMMC-I2 is held by Ann & Robert H. Lurie Children's Hospital of Chicago.
What it's used for
- The address space carries internal hospital infrastructure, evidenced by netnames such as
NETBLK-CMMC,CMMC,CMMC2, andCMMC6registered to the hospital. - The AS announces 2304 IPv4 addresses across 7 prefixes and maintains 3 observed neighbours, a ratio consistent with a single-site corporate or institutional network rather than a transit or access provider.
Notable
- All RDAP registrants for the announced prefixes align with the announcer, listing Ann & Robert H. Lurie Children's Hospital of Chicago as the registrant for every block.
- The address inventory is finely subdivided into multiple /23 and /24 blocks, reflecting site-by-site segmentation typical of a large internal corporate estate.
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 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 2.30K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS31770- Registry name
- CMMC-I2
- Registrant
- Ann & Robert H. Lurie Children's Hospital of Chicago
- Abuse contact
- poc@luriechildrens.org
- Registered
- 2003-12-17
- Last changed
- 2003-12-17
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 9 with no ROA
- ROAs
- 0 authorising AS31770
- ASPA
- no ASPA record
- IRR
- 89% registered · 8 of 9 announcements 1 other origin
- Route objects
- 8 naming AS31770
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 1,779 prefixes, as published 2026-10-21. 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