AS11580 — ISLAND-NETWORKS-LTD
Network type: residential
AS11580 announces 5 IPv4 prefixes covering 3,072 addresses and 0 IPv6 prefixes.
About this network
ISLAND-NETWORKS-LTD is Island Networks Ltd, a Jamaican managed-data and connectivity provider based in Kingston. Jamaica sits in ARIN's service region, so the ARIN-registered space is exactly what you would expect.
What it's used for
RIS shows 9 announced IPv4 prefixes and 3,584 addresses, no IPv6, and 2 observed neighbours. Two upstreams against a few thousand addresses is an access provider that buys transit, not a carrier.
The prefix registrants are mostly first-party: 74.116.56.0/22 and its /24 components, plus 72.252.24.0/24, all register to Island Networks Ltd. One of them, 205.164.204.0/22, carries the netname ISLANDNET-CGNT-NET-1 — carrier-grade NAT space. CGNAT is deployed when many subscriber sessions must share scarce public addresses, which is a strong hint that at least part of this AS carries end-user access rather than purely dedicated enterprise circuits, whatever the company's B2B self-description says.
Two prefixes register to other orgs, Hometime (64.112.16.0/22) and Wave (162.254.243.0/24). That is worth naming but not worth convicting on: they are single-RIR, and named-customer or acquired blocks announced by their provider look identical to this. The IP-leasing tell requires several unrelated registrants across multiple RIRs with mailbox addresses, and that combination is not present.
Notable
No PTRs came back on the sampled addresses. That is a sample, not a finding, and no inference is drawn from it. The honest summary is a small Caribbean provider serving business and access customers, with a couple of registrant relationships this evidence cannot fully explain.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 64.112.16.0/22
- 72.252.24.0/24
- 74.116.56.0/24
- 74.116.58.0/23
- 205.164.204.0/22
Upstream networks
Adjacent networks
awaiting query
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