AS9519 VERTELNET Vertical Telecoms Pty Ltd

AS9519 (VERTELNET) is held by Vertical Telecoms Pty Ltd, the Sydney-based licensed carrier that trades as Vertel. Vertel builds and operates private, mission-critical wireless and fibre networks — microwave links, carrier-Ethernet and private mobile — for government, utility and enterprise customers rather than for consumers.

What it's used for

The routing shape matches the business exactly. RIS sees 12 IPv4 prefixes covering 6,144 addresses, one IPv6 /36, and 9 observed neighbours. The IPv4 inventory is strikingly regular: almost every prefix is a /23 out of two contiguous ranges (203.82.96.0–203.82.110.0 and 203.188.216.0–203.188.222.0), announced individually rather than as aggregates. That is what deliberate per-service or per-site carving looks like — a carrier handing a discrete block to each managed customer network and traffic-engineering them separately, not an ISP dumping a pool of dynamic subscribers behind one route.

Nine neighbours is the tell for role. It is well above an end-site enterprise (which typically shows one or two) and far below a wholesale transit carrier (hundreds to thousands). It reads as a mid-size carrier with a couple of upstreams and an open peering posture at Australian exchanges, serving a modest number of high-value customers.

Notable

• Vertel is a licensed Australian carrier specialising in mission- and life-critical infrastructure, including networks in fringe-metro, regional and remote locations where fibre alone will not reach.
• The IPv6 allocation is a /36 — far more space than 6,144 IPv4 addresses would suggest, and consistent with a carrier provisioning per-customer v6 delegations.
• Address count alone would understate this network. It is a service provider, not an enterprise, despite holding less space than many single corporates.