AS31770 — CMMC-I2

AS31770 announces 7 IPv4 prefixes covering 2,304 addresses and 0 IPv6 prefixes.

About this network

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, and CMMC6 registered 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.

Announced prefixes

• 192.206.211.0/24
• 192.206.212.0/24
• 192.206.216.0/24
• 199.125.16.0/23
• 199.125.18.0/24
• 199.125.20.0/24
• 199.125.30.0/23

Upstream networks

• AS13499 NEW CCH, LLC
• AS6461 Zayo Bandwidth
• AS22335 Metropolitan Research and Education Network

Adjacent networks

• AS13499 NEW CCH, LLC
• AS6461 Zayo Bandwidth
• AS22335 Metropolitan Research and Education Network