AS11816 SERVICIO DI TELECOMUNICACION DI ARUBA SETAR N.V.

AS11816 is SETAR N.V. — Servicio di Telecomunicacion di Aruba — the incumbent, wholly

government-owned telecom operator of Aruba, based in Oranjestad. It is the island's full-

service carrier: fixed and mobile telephony, broadband and cable TV.

What it's used for

• Retail internet access for Aruban households and businesses. The reverse DNS is decisive: virtually every sampled address across the 201.229, 181.41 and 186.189 ranges resolves under setardsl.aw. dsl names the access technology, not a customer type, but a per-address subscriber naming scheme applied uniformly across the whole estate is an eyeball network, and it matches what a national incumbent does for a living.
• RIS sees 120 IPv4 prefixes / 68,352 addresses, 1 IPv6 prefix (2800:ad0::/32), and only 3 observed neighbours. Very few peers for that much space is normal for an island incumbent: it buys transit from a small number of mainland carriers rather than peering widely.

Notable

• The v4 space is LACNIC-registered to SETAR itself and heavily deaggregated into /23s and /24s out of a handful of parent ranges — 120 prefixes covering under 70k addresses.
• One prefix stands out: 186.159.100.0/24 is registered to Telefonia Bonairiano N.V. (Telbo, the incumbent operator of Bonaire), and its rDNS resolves under cust.telbo.net. A third-party registrant would normally be worth suspicion, but this is a neighbouring Caribbean incumbent's own customer space reached through SETAR — an operator relationship between two real, findable national carriers, not brokered address space.

Interesting

• Aruba's national network reaches the rest of the world through only three observed neighbours; submarine-cable geography, not network policy, is what caps that number.