The short answer: the best shippers for a broker are the small and mid-size companies nobody else is calling. You find them by going up the supply chain from a finished product to the companies that make its parts, by pulling names from public lists that exist for reasons other than marketing, and by checking who books the truck before you dial. Then you call with a dated reason, not a pitch.
Most advice on finding shippers stops at "use referrals, cold call, and try LinkedIn." That advice is not wrong. It is just what every other broker is doing, which is why the shippers it points to already have ten brokers on speed dial. This guide covers the usual sources quickly, then spends its time on what the usual guides leave out.
Why the usual shipper lists stop working
Every broker in the country can name the big manufacturers in their city. The same is true of the companies on the top 500 lists, the ones with the loudest websites, and the ones every lead database returns first. So those shippers get called all day, and they answer the same way: "We're covered."
Three things make the usual lists weak:
- They are sorted by size and visibility. Contact databases are built from websites, email traffic and LinkedIn activity. A 15-person fabricator with a three-page website barely shows up, even though it ships every week.
- The big accounts are already taken. Large shippers run routing guides and carrier bids. At a large brokerage, they are often already owned by a colleague.
- They tell you nothing about the freight. A name and a phone number do not tell you what leaves the dock, on what equipment, or who decides.
The shippers worth your time are the ones in between: real freight, a real dock, and nobody calling them yet.
The usual sources, in one table
You should still know the standard playbook. Here it is, with an honest read on each.
| Source | What it gives you | The catch |
|---|---|---|
| Referrals from current customers | The warmest lead you can get | You need customers first |
| Your carriers and drivers | Docks they load at, who ships what | Takes time to collect |
| Load board directories | Shippers already posting freight | Every broker sees the same posts |
| Competitors of your current shippers | Companies with the same lanes and products | Often the same size as the ones you already call |
| Names and titles | Weak on small companies, no freight data | |
| Trade shows | Face time with many shippers at once | Costly, and the big booths get all the attention |
| Google Maps | Local plants and warehouses, often with no web presence | Slow by hand, but underrated |
| Bought lead lists | Volume | Old data, and the same list is sold to everyone |
If you are asking how to find freight as a broker, this table is where most guides end. The rest of this one is about finding the shippers that are not on anyone's list.
Go up the supply chain
Start from a product you can see, then walk backward to everything that has to be made and shipped before it exists.
Take a finished product that every broker already calls on: say, a large industrial machine. The machine maker is a crowded account. But that machine is made of parts, and each part has its own maker:
- The finished product. The machine. Crowded, big, often routed by its own logistics team.
- Tier 1 suppliers. The companies that build the major assemblies: frames, enclosures, motors, control panels.
- Tier 2 and tier 3 suppliers. The companies that make what tier 1 needs: steel plate cut to size, castings, machined parts, wire and cable, fasteners, coatings.
- Lateral inputs. What every plant on the chain consumes: crates and pallets, packaging, industrial gases, adhesives, lubricants, spare parts.
The further back you go, the smaller the companies get and the fewer brokers have heard of them. A 20-person company that makes one part for a whole industry ships every week, has one or two people booking trucks, and rarely gets a call.
Here is how to do it on paper before you look for a single company:
- Write down the product family, not one brand. "Electrical transformers", not one manufacturer.
- List what goes into it, node by node: raw material, first conversion, delivered parts, the finished product, the channel that sells it, the end user.
- Add the side flows: packaging, consumables, maintenance and repair, scrap and recycling.
- Keep every node. Do not throw out a node because it looks small or crowded. Small is the point, and crowded nodes still have companies nobody is calling.
- Stop at a concrete physical product, made by an identifiable type of company, that moves by truck.
Then search each node by the trade's own words, not by category. "Steel tank fabrication" or "toll slitting" finds the small shops. "Transformer suppliers" returns the same twenty names everyone already calls.
The same move works on news. When an airline went under in 2026, most people read a dead airline. A grounded fleet gets taken apart and sold, and every part that sells has to be shipped. Mapping the firms that would buy those parts produced a call list nobody else had, and a broker landed a new shipper from it. Our success story tells it step by step.
Public lists nobody mines
The best lists of small shippers were not made for salespeople. They exist because a company has to register, certify or bid, however small it is. That makes them complete in a way no marketing database is.
Registries a company cannot opt out of:
- EPA ECHO. Every facility with an environmental permit, searchable by industry code and location. Metal finishing, coating, chemicals and many manufacturing processes need one, so a facility on this list runs a real physical process. Search EPA ECHO.
- OSHA establishment search. Inspection records by establishment, one of the few public sources that hints at plant-level size. Search OSHA establishments.
- FMCSA SAFER. Tells you whether a company holds its own authority to run trucks. More on why that matters below. Search FMCSA SAFER.
- SAM.gov. Every company registered to bid on federal work, down to five-person shops, searchable by industry. Search SAM.gov.
- State air permits. A paint booth, a curing oven or a plating line needs one. Each state publishes its own, and they are ugly and hard to search, which is exactly why nobody mines them.
Rosters already sorted by trade:
- Certification registries. Pressure vessel and tank makers hold code stamps listed by the National Board. Aerospace suppliers hold quality certifications listed in public registries. Most holders are small.
- Trade association member lists. Almost every trade has an association, and its member directory is a ready-made list of the companies on that node of the supply chain.
- Trade show exhibitor lists. Go back three years, not just this year, and look at the small booths.
- Public bid results. State transportation departments, utilities and cities publish who bid on each job. Read the losing bidders too: that is where the small companies are.
- Distributor line cards. A distributor's "brands we carry" page can name dozens of small manufacturers in one place.
Where the density is: the Census County Business Patterns does not name companies, but it counts establishments by industry, county and employee size. It tells you which counties actually hold the 10 to 50 person plants of your trade, so you know where to point the map search.
Before you dial: who books the truck?
This is the step most brokers skip, and it is why so many first calls end with "customer routed" or "we have our own trucks." A company can ship every day and still never book a truck. Before you spend a call on a shipper, find out who controls its freight.
Does the company own what it ships? A company that makes and sells its own product owns the goods while they move, so it can choose the truck. A distributor that buys and resells owns its goods too. A toll processor does not. Coaters, platers, heat treaters and many job shops work on parts that belong to their customer, so the customer books the truck in and out. Those calls end in "customer and vendor routed" almost every time.
Does it run its own trucks? Look the company up on FMCSA SAFER. If it holds its own carrier authority, it runs at least some trucks of its own. That does not rule it out: many companies with a few trucks keep them for local deliveries and broker the long hauls, the overflow and the inbound. But you want to know it before the call, not during it.
In our own research, about half of the small manufacturers we checked held their own carrier registration (182 of 367). So it is worth thirty seconds before every call. Ask about the lanes their trucks do not cover.
Who is the buyer? A small supplier that sells to a big manufacturer often ships on the buyer's terms. If the sale is "FOB origin, freight collect," the buyer's routing guide picks the carrier, and the supplier never books the truck. If the supplier sells "delivered," it pays for the freight and chooses who moves it. Clues are often public: a "terms and conditions of sale" page, a line like "all prices FOB our plant," or a product sold "delivered and installed."
Across the supply chains we have mapped, about one node in three is held by companies that do not always control their own freight (73 of 219). Those nodes are not useless. Call them to learn who books the truck, then call that company instead: the customer or the supplier that does book it is a shipper too.
What counts as a red flag, and what does not:
- Real red flags: "customer-supplied parts," "will call" or "customer pickup only," a confirmed private fleet for all lanes, a two-person shop that ships by parcel.
- Not a red flag: silence. Most small companies say nothing about freight on their website. A quiet company that makes and sells its own product is still a good call.