One name at a time is how good domains slip away
Every naming session ends the same way: a shortlist of twenty, fifty, or a hundred names, and a browser full of tabs where each name gets checked one by one. By name forty, you have forgotten which of the first ten were available, and the name you actually wanted is still sitting unchecked in the middle of the list.
Bulk domain search exists to kill that workflow. Instead of one query per name, you paste the whole shortlist, pick your extensions, and get a verdict on every combination in a single sweep. It does not make the naming decision for you — but it turns an afternoon of tab-juggling into a ten-minute triage exercise.
This guide covers how bulk search actually works, how the major tools compare on the limits that matter, and the shortlist workflow that turns a raw pile of ideas into a registered domain.
What bulk domain search is — and the direction most people get backwards
There are two different "bulk" problems, and picking the wrong tool for yours wastes the sweep:
- Many names, few extensions. You have a long shortlist and want to know which names are free in .com (and maybe .io, .co, .ai, or .net). This is bulk domain search: many words × a handful of TLDs.
- One name, every extension. You have one keyword and want to see every extension it is available in. That is multi-TLD search, not bulk search — Nomlen's multi-TLD search checks one keyword against 1,100+ extensions in a single request.
Use bulk search when the list is long and the extensions are few. Use multi-TLD search when the name is fixed and the extension is flexible. Most failed naming sessions mix the two up.
Nomlen's bulk domain search sits squarely in the first camp: paste up to 1,000 names, run them against up to 5 extensions at once, and get up to 5,000 combinations in one sweep. Results stream in as they land, each name labelled Available, Premium, or Registered, and the whole sweep exports back to CSV.
How a bulk sweep actually works
Behind the paste box, a bulk checker is doing the same availability lookup you would do by hand — just in parallel. For each name-and-extension pair, it queries live registry data and returns one of three verdicts:
- Available — no current registrant; register at the standard price for that extension.
- Premium — no current registrant, but the registry prices it above standard, sometimes far above. Treat premium as a price decision, not a free name.
- Registered — taken. Move on, or check the owner's details with a WHOIS lookup if you are considering an offer.
Two caveats apply to every bulk tool. First, a sweep is a snapshot: availability changes constantly, so the registrar checkout is the final word. Second, some names read as available but are registry-reserved or premium-gated, which only surfaces at checkout. If a name matters, register it promptly.
Bulk search tools compared: the limits that actually matter
Most bulk tools look identical on their landing pages. The differences show up in four places: how many names you can paste, how many extensions you can sweep at once, whether CSV works both ways, and whether you need an account. The table uses each provider's own published limits, cross-checked against Dynadot's May 2026 comparison.
Tool | Names per sweep | Extensions per sweep | CSV import / export | Account needed? |
|---|---|---|---|---|
Nomlen Bulk Domain Search | Up to 1,000 names | Up to 5 | Yes / Yes | No — free, no signup |
Namecheap Beast Mode | Up to 5,000 domains or keywords | 570+ TLD categories to filter by | Yes / Yes | No for search |
GoDaddy Bulk Search | Up to 500 at a time (up to 2,000 with an account, per Dynadot's comparison) | 518+ extensions listed | No import; bulk add-to-cart | No for basic search |
Dynadot Bulk Search | Up to 1,000 on a regular account; 2,000 Bulk / 5,000 Super Bulk tiers | TLD filters and presets | Yes / Yes | Yes |
Sources: Nomlen's bulk search tool page; Namecheap's Beast Mode FAQ (5,000-entry limit, CSV import/export); Dynadot's bulk search comparison page (reviewed May 2026). Limits vary by account status and provider updates, so re-check before a large sweep.
The practical read: if your list is under 1,000 names and your extensions are five or fewer, any of these tools handles it — Nomlen's edge is that it needs no account and streams results live. If your list runs to several thousand keywords, Namecheap's 5,000-entry ceiling matters most. GoDaddy's bulk tool, with no CSV import, is best treated as a checkout shortcut for names you already know are available, not as the discovery tool.
The shortlist funnel: from 100 ideas to one registered domain
A bulk sweep gives you data, not a decision. The funnel below is the workflow that turns that data into a name, and it works whether your list has 30 names or 1,000.
Step 1: Build the list before you open the tool
Write the list in a spreadsheet first, one name per line, without extensions. Aim for three kinds of candidates: exact-match names, compound names (word + a second word), and brandable inventions (coined words, blends, dropped vowels). A list of only exact-match dictionary words will come back almost entirely registered. If you are still generating ideas, start with our guide on how to choose the perfect domain name before you sweep.
Step 2: Sweep the core extensions first
Run the list against .com plus at most four others that fit the project — .io or .ai for a tech product, .co as a .com fallback, .net for infrastructure, or a niche extension like .studio or .coffee where the extension itself describes the business. Sweeping all 1,100+ extensions for 100 names is 110,000 lookups and a results table nobody can triage. Five extensions keeps the sweep readable: 500 verdicts you can actually act on.
Step 3: Triage into three piles
Export the sweep to CSV and sort it into: available at standard price (your shortlist), premium (only if the price is defensible for the project), and registered (discard, unless you are prepared to make an offer — see our guide on what to do when your .com is taken). Delete the registered pile from the working sheet immediately. A shortlist that still contains taken names is how teams waste a meeting re-debating names they cannot buy.
Step 4: Expand only the survivors with transforms
This is the step most people skip, and it is where bulk tools earn their keep. Take the ten best available names and expand them automatically: add prefixes (get, try, use, go, hello), add suffixes (app, hub, labs, hq), drop the last vowel for a short brandable form (flicker → flickr), or pluralize. Nomlen's bulk tool does all four as built-in transforms and shows the combination count before you run, so a 10-name list becomes a 100-combination sweep in one click. Expanding after triage — not before — keeps the results table small enough to read.
Step 5: Filter by renewal price, not first-year price
A name that registers for $3 and renews at $40 is not a bargain. Before you fall in love with a survivor, check its renewal price in Nomlen's TLD price list. Long-tail extensions vary wildly: some renew at $10–15, others at $30–60+ because their registries set premium pricing. Sort survivors by renewal price and cut anything whose second year would make you wince.
Step 6: Protect the variants, then register the winner
Once you pick the winner, register the obvious variants in the same session if the budget allows: the .com if you chose another extension, the plural, and the most common misspelling. Then stop searching — every extra sweep after the decision invites second-guessing a name you already validated.
CSV in, CSV out: the workflow for teams and portfolios
The CSV round-trip is what separates a bulk tool from a bulk toy. Import a client shortlist or portfolio audit list, sweep it, export the verdicts with availability and cheapest registrar price per extension, and the spreadsheet becomes the deliverable: share it for sign-off, feed winners into registration, or re-run the same file next quarter to catch names that freed up.
One formatting tip that saves a failed import: keep one name per line, strip trailing spaces and blank lines before pasting, and leave extensions out of the name column unless the tool asks for them.
Five bulk-search mistakes that waste the sweep
- Sweeping everything against everything. 100 names × 1,100 extensions is noise, not research. Cap the extensions at five per sweep.
- Treating "available" as "safe to build on." Availability is not trademark clearance. A name can be unregistered and still infringe an existing trademark — check before you invest in branding.
- Ignoring the premium label. Premium names look available until checkout, where the price can be hundreds or thousands of dollars. Filter them out early unless the budget genuinely covers it.
- Re-checking instead of registering. Availability is a snapshot. If the name is right and the price is right, register it in the same session.
- Searching while logged into a registrar you distrust with the data. Every search tells the search provider what you want. A no-signup tool keeps your shortlist out of any registrar's sales funnel until you choose to buy.
Frequently asked questions
How many domain names can I check at once?
It depends on the tool. Nomlen's bulk search accepts up to 1,000 names per sweep against up to 5 extensions (up to 5,000 combinations). Namecheap's Beast Mode accepts up to 5,000 domains or keywords per search. GoDaddy's bulk search handles up to 500 at a time, or up to 2,000 with an account according to Dynadot's comparison.
What is the difference between bulk search and multi-TLD search?
Bulk search checks many names against a few extensions. Multi-TLD search checks one name against every extension — Nomlen's multi-TLD tool covers 1,100+ extensions in one request. Use bulk search for a long shortlist, multi-TLD search for a fixed name.
Is bulk domain search free?
Nomlen's bulk search is free with no signup, and Namecheap's Beast Mode is free to search. Registrars may charge for registration itself, and premium names carry registry-set prices above standard rates.
How accurate are bulk availability results?
Each name is checked against live registry data at sweep time, so results are accurate to the minute — but availability changes constantly as names are registered worldwide. Treat results as a snapshot; the registrar checkout is the final word.
Can I import a list from a spreadsheet?
Yes. Nomlen's bulk tool imports a CSV and exports every sweep back to CSV with availability and the cheapest registrar price per extension. Namecheap's Beast Mode and Dynadot's bulk tool also support CSV import and export.
What do name transforms do in a bulk search?
Transforms expand your list automatically: add common prefixes (get, try, use, go, hello) or suffixes (app, hub, labs, hq), drop the last vowel for a shorter brandable form, or pluralize each word. Nomlen's tool shows the total combination count before you run the sweep.
Does checking a domain name reserve it for me?
No. A search is only a lookup — the name stays available to anyone until a registration is completed and paid for at a registrar. If a swept name is available and you want it, register it promptly.
Why does a name show as available but cost more at checkout?
Some names are registry premium: they have no current registrant, so they read as available, but the registry only releases them at a premium price. Others are registry-reserved and cannot be registered at all. The checkout price, not the sweep label, is the real cost.
Ready to sweep your shortlist? Run it through Nomlen's bulk domain search — up to 1,000 names, up to 5 extensions, free with no signup — or, if your name is fixed and the extension is flexible, check it against every extension with the multi-TLD search.
