AS11661 SEMICUBIC

SEMICUBIC belongs to Semicubic Systems LLC, a small independent network operator registered in Henderson, Nevada and physically present in the San Francisco Bay Area. Despite the low AS number, ARIN registered this ASN in February 2020 — it is a recycled number, not an early-internet network.

What it's used for

Infrastructure rather than eyeballs. The AS announces two v4 prefixes (162.248.172.0/22 and 23.152.112.0/24, 1,280 addresses in total) plus a single IPv6 /44, and RIS sees it with four neighbours. PeeringDB lists it at the Fremont Cabal Internet Exchange on a 10G port, with equipment at Hurricane Electric's Fremont 2 facility and an open peering policy. A colo footprint, an IXP port and an IPv6 allocation far larger than the v4 holding is the shape of a network built to host and originate services, not to serve subscribers. What exactly it carries is not directly observable from the routing data, so treat the specific workload as unconfirmed.

Notable

Both prefixes are registered in ARIN directly to Semicubic Systems LLC, and everything sits in one RIR. That matters: the leased-address and residential-proxy pattern shows up as scattered blocks registered to several unrelated third parties, and none of that is present here. Self-registered space announced by its own holder is the signature of a real operator, however small.

Interesting

The four-neighbour count places it firmly in the customer, not carrier, tier — an open-peering member of a community exchange rather than a transit seller.