AS11844 Empresa Catarinense de Tecnologia em Telecom. Ltda

AS11844 is Empresa Catarinense de Tecnologia em Telecomunicações Ltda, the Santa Catarina operator that trades as Olé Telecom / Olé Fibra, based in São José in the Greater Florianópolis area and serving both homes and businesses.

What it's used for

• Regional broadband access in southern Brazil. RIS observes 14 IPv4 prefixes covering about 18,400 addresses plus IPv6 from 2804:1c::/32, with 27 observed neighbours. A modest address pool with a couple of dozen neighbours is a regional ISP that peers locally (Brazil's IX.br fabrics make that cheap) rather than a transit carrier.
• The reverse DNS is where the role becomes unambiguous. Sampled addresses land on dyn.oletelecom.com.br dynamic pools, generic host-N.… names under freefone.com.br, and corporate mail and relay hosts under ole.net.br. Those are subscriber pools and the operator's own service hosts.

Notable

• Every prefix that resolved registers to the same company under its LACNIC identifiers, and the rest of the lookups simply failed, which is not a clearance either way but leaves no third-party registrant anywhere in the inventory. Self-registered space with first-party subscriber rDNS is a real operator, not a leasing front.
• The rDNS carries more than one brand (oletelecom, freefone, wavesystem), which typically reflects services or small networks folded into the same operator over time rather than unrelated tenants.