Mac network utility · for people who trace cables

Know exactly which switch port you're plugged into.

Plug in. Open PortSpot. It reads the switch's own LLDP/CDP and your DHCP lease and tells you the switch, port, VLAN, and subnet — in one window.

  • Switch, port, model & VLAN straight from LLDP/CDP — no config on the switch.
  • Full IP picture — DHCP server, lease timers, gateway, DNS, subnet range, egress IP.
  • One-click diagnostics — reachability tests, rogue-DHCP scan, duplicate-IP check, copy report.

No spam — one email when the beta opens.

Why PortSpot

The answer lives on the Mac you already carry.

"Which switch, port, and VLAN is this jack on?" — answered in one window, one click, with nothing extra to buy, charge, or carry. PortSpot reads what the switch already announces over LLDP/CDP and pairs it with your DHCP lease, so you get the switch, port, VLAN, and full IP picture in seconds.

Switch · Port · VLAN

Straight from the switch's LLDP/CDP — no login, no config.

Full IP picture

DHCP, gateway, DNS, subnet, egress IP — all in one place.

Health checks

Reachability, rogue-DHCP and duplicate-IP — one click.

What it reads

Everything about where you're standing.

Switch, port & VLAN

Listens for the switch's LLDP/CDP advertisement and names the exact switch, device type, port, model and VLAN — nothing to configure on the switch side. Voice VLAN and PoE too, when the switch advertises them.

The full IP story

DHCP server and lease timers (T1/T2), gateway with latency, DNS + search domain, subnet range, and the public egress IP the internet sees.

Trouble on the wire

A one-click active scan flags rogue DHCP servers handing out leases and duplicate-IP conflicts before they take a user offline — plus gateway, DNS, and internet reachability tests.

How it works

Three seconds, plugged to answer.

01

Plug in

Drop your Ethernet (or USB adapter) into any switch port. PortSpot follows whatever's live — it doesn't care what the interface is named.

02

Open PortSpot

It reads the switch's LLDP/CDP frame and your DHCP lease in the background — no switch access, no login, no setup.

03

Read the panel

Switch, port, VLAN, subnet, DHCP, DNS, gateway — one window. Copy it into a ticket or export it.

Pricing

One price. Yours to keep.

No subscription, no per-seat fees. Buy it once, own it, and get free updates within the version.

One-time license
$99 once

Buy it, own it, use it on your Mac. Free updates within the version. No recurring charges, ever.

Beta list

Be first to plug in.

Drop your email and we'll send the beta when it's ready. That's the whole commitment.