Autonomous system
AS3742 ROCKISLAND2
Residential ARIN
Summary
Rock Island Communications
isp legacy
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Seattle Internet Exchange | Seattle, United States | 206.81.80.16 |
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS26370 | Pal Communications LLC | 61 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3742- Registry name
- ROCKISLAND2
- Registrant
- Rock Island Communications
- Abuse contact
- noc@rockisland.com
- Registered
- 2025-07-22
- Last changed
- 2025-07-22
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 1 authorising AS3742
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 9 naming AS3742
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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