AS3742 — ROCKISLAND2

Network type: residential

AS3742 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

Rock Island Communications (ROCKISLAND2), the internet provider for San Juan County, Washington, based in Eastsound on Orcas Island.

What it's used for

• Broadband access across the San Juan Islands — fiber and fixed-wireless service to island homes and businesses.

Notable

• An eyeball network at small scale: only a few hundred IPv4 addresses are announced from this AS.
• Rock Island is a wholly owned subsidiary of OPALCO, the local electric cooperative, and rides the co-op's fiber backbone — a utility-owned broadband model built after a 2013 undersea cable break cut the islands off.

Interesting

• Despite the low number, this AS was only registered to its current holder in 2025, so it carries no early-internet pedigree; it is a reissued number, not an original 1990s allocation.

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

Announced prefixes

• 23.128.136.0/24

Upstream networks

• AS26370 Pal Communications LLC

Adjacent networks

• AS26370 Pal Communications LLC

Internet exchanges

• Seattle Internet Exchange — Seattle, United States