Bulk Domain Availability Checker — Paste a List, Read RDAP Status

Useful bulk check means three things: (1) accept messy paste — newlines, commas, or spaces; (2) de-dupe and cap so you do not hammer public RDAP; (3) return a row status you can act on — registered, available, redemption, pending delete, or unknown/error — not a vague “maybe free.”

Vacato’s free bulk domain availability checker does exactly that: paste up to **25** unique domains, run concurrent RDAP lookups in small batches, and read the table. No account required for the snapshot. Single-name triage still lives at the domain checker; expiry-focused one-shots at domain expiry.

If a “bulk checker” only wraps a registrar search box or forces signup before you see any row, it is lead-gen, not a tool. If it promises to register every available name for you, that is a different product — and usually paid.

RDAP answers **current registration status** from public registry data. It does not reserve a cart at GoDaddy, Porkbun, or Namecheap. An “available” row means the registry has no active registration object in the response we got — not that your registrar checkout will succeed a second later if someone else is racing.

Same honesty on the other side: “taken” includes names you may still want. Redemption and pending delete are lifecycle stages where monitoring beats re-pasting the list every afternoon. Protocol background: RDAP vs WHOIS for drop monitoring.

Bulk runs on Vacato stay polite — limited concurrency and short delays between batches — so public RDAP endpoints are less likely to throttle you mid-shortlist. That is slower than a reckless parallel script, and more reliable for a free public tool.

**Use bulk** when you have a brainstorm list, a CSV column of brandables, or a weekend drop shortlist under ~25 names. Paste once, sort mentally: available → register now at your registrar; taken/pending → watch or backorder; junk → delete from the sheet.

**Use single check** when you only care about one premium name and want the richer snapshot UI (or an expiry-focused view). **Use monitoring** when the list is taken and the job is “tell me when status flips” — see domain availability monitoring and free domain drop alerts.

**Do not use bulk as a catcher.** Vacato does not place registry creates. Contested deletes still favor DropCatch-class or registrar backorders for must-wins — backorder vs monitoring, vs DropCatch.

After a bulk run, **Watch all taken** (and per-row Watch) is the conversion path that matters. Taken, redemption, and pending-delete rows can move onto a Vacato watchlist. You enter email for a 6-digit login code (no password). Free covers **20** domains with 5-minute RDAP checks; Pro is $7/month for 100 names at 1-minute checks.

Workflow: paste shortlist on /tools/domain-bulk → note available names and register them yourself → watch the keepers that are still taken → connect Telegram so the first alert is not buried in inbox. Public share pages for single names live under /d when you want a linkable status snapshot.

**Start from the tool:** Open the free bulk checker. Or go straight to get started if the list is already triaged.

Cap is **25** per public bulk run — enough for a focused shortlist, not a 2,000-row portfolio dump. Larger lists belong in Pro CSV import after signup, or split across multiple paste runs.

Results can show **unknown** or **error** when a TLD’s RDAP is flaky, rate-limited, or missing from bootstrap. Re-run later or check the single-name tool; do not treat a failed row as “available.”

Vacato remains an **alert layer**. Bulk check + watchlist + Telegram is the stack for coverage. Backorders remain the stack for names you cannot lose. Investor hub: for domain investors. Tool index: /tools.