Order confirmation
An order confirmation is the broker's note that it accepted your order. It records the car, the lane, and a price. It is not dispatch. The carrier, the pickup day, and sometimes the price can still change if the contract allows it.
The order confirmation is the message, email, or PDF you get after you book with a broker. It should name the car, the origin, the destination, the first available date, the transport type, and the price you were told. Read it the same day. If a fee, a deposit, or an inoperable status is missing, reply in writing.
Which numbers can still move
The confirmation is not a carrier assignment. Until dispatch, no truck has accepted the car. Contracts often let the company re-quote if the car is inoperable, oversized, or modified, if you miss the pickup, or if no carrier will take the posted rate. A price-lock sentence, if you have one, has to be in this document or in the contract it points to. A banner on a website is not the sentence.
How it differs from dispatch
Dispatch names the carrier and the docket. The confirmation usually names only the broker. Keep both. RideShipper may show a range before any of this exists. That range is not an order confirmation, and RideShipper does not book the shipment.