AS11789 SURFAIRWIRELESS-IN-03

SURFAIRWIRELESS-IN-03 belongs to Surf Air Wireless, LLC, a fixed-wireless internet provider based in LaPorte, Indiana. ARIN registered the AS to the company in 2018, so this is recycled space rather than an early-internet allocation — the -IN-03 suffix reads as the operator's own Indiana site numbering.

What it's used for

Surf Air is a regional eyeball network. It sells residential and small-business wireless broadband, along with VoIP and TV, across a contiguous footprint in northwest Indiana, northeast Illinois and southwest Michigan, and it grew by acquisition — a large infrastructure investment in 2019 alongside the purchase of another regional wireless ISP. That is the whole of the business: there is no hosting or wholesale arm behind this AS number.

The routing matches. RIS sees 14 IPv4 prefixes totalling 4,608 addresses and no IPv6, announced through a single observed neighbour. One upstream and a few thousand addresses is a small last-mile operator, not a carrier; a transit network of any kind would show peers in the hundreds. Every announced prefix that resolves in ARIN — the 147.129 blocks and a pair of 23.145 /24s — comes back to Surf Air Wireless itself, with no third-party registrants anywhere in the inventory.

Notable

Most of the address space is carved out of a single /20 and /21 inside 147.129.0.0/16, deaggregated down to /23s and /24s. Splitting a contiguous block that finely on one upstream usually reflects internal tower-and-market segmentation, not traffic engineering.