Copart Mobile Proxies for Auction Lot Data

Copart runs online salvage and used-vehicle auctions on a published sale calendar, with thousands of lots moving through yards across the US every week. Rebuilders, exporters, insurers and analysts use its public lot pages to follow damage types, title brands, odometer readings and sale outcomes. Working with that data is mostly about timing and session stability rather than raw volume. This page covers what guests versus members can see, how the auction calendar should drive your schedule, and how a dedicated WeProx US mobile line keeps a legitimate member session steady.

Guest view versus member view

Without logging in, a visitor sees a lot's year, make, model, primary and secondary damage, title type, odometer with its status, yard location, sale date and photos, with some details limited. Registered members see more, including bidding and some sale history, and bidding itself requires a membership, sometimes through a licensed broker depending on the state and vehicle type. Keep that line clear in your design. Public lot facts are fine to monitor at a considerate rate within Copart's terms. Anything behind the login belongs to your own authorized member account and should be accessed only through that account, in the way the terms allow, never shared or automated beyond what is permitted. A proxy does not change what an account may do; do not automate bidding.

Let the sale calendar set the schedule

Every Copart yard has scheduled sale days, and each lot is assigned to a sale. Lots appear some days before their sale, collect preliminary bids, then sell live on the sale date, after which the status changes. That structure means a sensible job is event-driven. Discover new lots daily per yard or per search, check tracked lots a small number of times before their sale, and check once after the sale to record the outcome. Polling every lot continuously wastes requests and teaches the site that you are a problem, while adding nothing, because most lot fields do not change between discovery and sale.

Store the lot number as the key, with the VIN as an attribute where visible. The same VIN can come back through auction again later, and joining those appearances is valuable for rebuild and resale research.

Why the session must stay put

Copart sits behind a commercial bot management layer and watches session continuity. A member who logs in from one address and then appears from a new address every few requests looks like a compromised account, and that is exactly the pattern a per-request rotating pool produces. A WeProx line is one dedicated US carrier device, so the session can stay on one IP for as long as you like; sticky is the default and rotation only happens when you call the rotation link. For member work, keep one account on one line, log in normally, and do not rotate mid-session. For public lot monitoring, use a separate line with ordinary sticky sessions per yard and rotate between yards if you wish.

Carrier-grade NAT means that address is shared with ordinary phone users, which is why a carrier IP is not treated as hostile the way a datacenter range often is.

• One member account per line, no rotation during a logged-in session.
• Public monitoring on a separate line from member work.
• No automated bidding, and no shared member credentials.

Metro choice

Copart's US site is the same across the country, and lot locations come from the yard, not from you. Pick a line where stock exists, or one near the yards you follow if you also watch local marketplaces. WeProx lines run in New York, Los Angeles, Chicago, Houston, Phoenix, Miami, North Carolina and Boston, and moving a line is free.

Troubleshooting

If lot pages return but key fields are blank, check whether you are logged out and seeing the limited guest view. If a member session is repeatedly logged out, look for rotation calls in your code or another tool sharing the line. Errors right after a rotation are the modem re-attaching. Challenge pages across fresh sessions mean the overall rate is too high.

Setting up a Copart proxy on WeProx

1. Order two WeProx lines if you run both member work and public monitoring.
2. Copy host, port, credentials and rotation URL for each line.
3. Pin your authorized member account to one line and never rotate while logged in.
4. Discover lots per yard daily on the monitoring line.
5. Check tracked lots before and once after their sale date.
6. Key records on lot number and store the VIN as an attribute.

Copart proxy questions