AS19880 — REALCOMPII

AS19880 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

The AS handle REALCOMPII is operated by Realcomp II Ltd., a Michigan-based Multiple Listing Service (MLS) provider.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by reverse DNS entries such as pooln254.realcomp.com, poolb128.realcomp.com, and poolc126.realcomp.com.
• The network announces 1536 IPv4 addresses across 2 prefixes with only 2 observed neighbours, indicating a small, self-contained internal estate rather than a transit or access network.

Notable

• The registrant for both announced prefixes, RCOMPII-BLK1, is listed as REALCOMP II LTD., which matches the AS holder exactly.
• The address inventory consists of two contiguous blocks: 207.111.176.0/22 and 207.111.180.0/23, reflecting a finely subdivided corporate network.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 207.111.176.0/22
• 207.111.180.0/23

Upstream networks

• AS22974 Charter Communications LLC
• AS33668 Comcast Cable Communications, LLC

Adjacent networks

• AS22974 Charter Communications LLC
• AS33668 Comcast Cable Communications, LLC