What we look at
Two signals per address, nothing more. The first is whether a response arrives at all. The second is the host the address finally lands on. No cookies, no login, no region trick, because a check that depends on your account is not a check a stranger can repeat.
A wrapped ACBuy address gets looked at twice. First as it stands, then rebuilt from the source marker inside it. The second request is where the useful information sits, and it is why the current snapshot records 31 wrappers failing while 31 rebuilt addresses answered inside the same window.
How the verdict is reached
The wrapper is requested first. A connection failure there is written down as a wrapper failure, not as an item failure, and the rebuild follows straight after. The marketplace address that comes out of the rebuild is then requested once, with its landing host noted beside the result.
Timing is fixed at 8 seconds, and hosts are contacted two at a time with a gap between calls, so a slow answer is never mistaken for a dead one. Two labels exist for messy results: a timeout or refused connection is unrecorded, and a verification wall is shielded. Neither counts as evidence about the item.
Possible readings
Resolves: the rebuilt address answered at the recorded path. All 93 records in the 2026-W39 table read that way. That is a statement about one collection window rather than a promise about tomorrow morning, and it is the most common reading by a wide margin.
Gone: the source returns 404 or 410, or the seller has taken the listing down. Moved: the address answers, but the landing page is not the recorded one. Both describe the item or the listing, and both are worth acting on.
Shielded and unrecorded are different in kind. They describe the check rather than the goods: a verification step, a login wall, a timeout, a refused connection, or a sample that was never taken. Those two labels exist so that a blocked reading is never dressed up as a real absence.
Action per reading
Resolves means rebuild the rest of the sheet and keep moving, in batches small enough that a broken row stands out. Paste the rebuilt marketplace address, never the wrapper, and glance at the platform ledger before you assume a platform will take it.
Gone means stop. Keep the row so the trail stays readable, but spend nothing further on it. Moved means read the new landing page before you use it, because a redirect is the one reading where the address works and still misleads you.
Shielded and unrecorded mean run it again later. Wait an hour, repeat the same request, and treat only a repeated result as worth writing into a sheet. The checking method page sets out the same settings this site uses, so your run and ours can be compared line by line.