Best bulk domain availability checkers (2026)
Quick answer: For the most domains in one go without an account, Instant Domain Search and Namecheap Beast Mode each take up to 5,000, and Dynadot takes 1,000. GoDaddy takes 500 (2,000 signed in). SimpleVerifier checks 100 a run without an account (500 signed in) against each registry's RDAP server and DNS, and shows the registrar and expiry of names that are taken.
By SimpleVerifier Team · Last updated · Prices and limits checked on each vendor’s own site
Side by side
Ranked by the most domains one search or run accepts without an account, as each vendor publishes it.
| # | Tool | Domains per run, no account | Free limit | Bulk limit | Price | Signup needed | Best for |
|---|---|---|---|---|---|---|---|
| 1 | Instant Domain Search (bulk) | 5,000 | Up to 5,000 domains a batch | 5,000 domains a batch | Free | No (optional account to keep bookmarks) | Very long lists, with registrar price comparison |
| 2 | Namecheap Beast Mode | 5,000 | Up to 5,000 terms a search | 5,000 terms a search | Free to search; you pay to register | Not stated (the search page works signed out) | Bulk searching and registering at one registrar |
| 3 | Dynadot Bulk Search | 1,000 | Up to 1,000 domains a search | 1,000 a search; more on Bulk and Super Bulk account levels | Free to search; you pay to register | No (per Dynadot's help page) | Domain investors who already register at Dynadot |
| 4 | GoDaddy Bulk Domain Search | 500 | Up to 500 domains a search | 500 signed out, 2,000 signed in | Free to search; you pay to register | No for 500; yes for 2,000 | Buyers who register at GoDaddy |
| 5 | SimpleVerifier bulk domain availability checker | 100 | 100 domains a run | 100 a run without an account, 500 signed in | Free tool (paid plans are for email verification) | No for 100; free Google sign-in for 500 | Shortlists where you want registrar and expiry of taken names |
| 6 | Porkbun bulk search | 100 | Up to 100 domains a search | 100 domains, or 1 name across up to 100 TLDs | Free to search; you pay to register | Not stated (the search box works signed out) | Checking one name across many TLDs |
How we compared
We read each tool's own page on 19 October 2026 for its per-search limit, whether an account is needed and what it costs. Limits are the published figures; we did not load-test any tool. Registrars make money when you register, so their checkers sit next to a cart; that is noted, not penalised.
Each tool in a few lines
1. Instant Domain Search (bulk)
Best for: Very long lists, with registrar price comparison
- Up to 5,000 domains in one batch, no account
- Shows pricing across 20+ registrars beside availability
- Watch out: Not a registrar, so you register the names elsewhere
Checked October 19, 2026: Instant Domain Search: Bulk domain search
2. Namecheap Beast Mode
Best for: Bulk searching and registering at one registrar
- Up to 5,000 terms in one search
- Search and checkout in the same place
- Watch out: Results are Namecheap's, built to sell you the domain
Checked October 19, 2026: Namecheap: Bulk Domain Search (Beast Mode)
3. Dynadot Bulk Search
Best for: Domain investors who already register at Dynadot
- 1,000 domains a search with no account
- Higher limits for its Bulk and Super Bulk account levels
- Watch out: Higher limits are tied to Dynadot account levels
Checked October 19, 2026: Dynadot Help: How to Use Bulk Domain Search
4. GoDaddy Bulk Domain Search
Best for: Buyers who register at GoDaddy
- Up to 2,000 domains a search once signed in
- Bulk registration from the same results
- Watch out: The 2,000 limit needs a GoDaddy sign-in
Checked October 19, 2026: GoDaddy: Bulk domain search
5. SimpleVerifier bulk domain availability checker(our tool)
Best for: Shortlists where you want registrar and expiry of taken names
- Asks each TLD's own RDAP registry and cross-checks DNS delegation
- Taken names show registrar and expiry date where the registry publishes them
- Not a registrar, and a name the registry won't answer for shows as Unknown, never as available
- Watch out: 100 domains a run without an account is far below the registrar tools
- Watch out: Shows no prices; confirm at a registrar
Checked October 19, 2026: SimpleVerifier: Bulk domain availability checker
6. Porkbun bulk search
Best for: Checking one name across many TLDs
- A TLD mode checks one name across up to 100 extensions at once
- Watch out: 100 domains a search
Checked October 19, 2026: Porkbun: Domain search (bulk tab)
Common questions
- Which bulk domain checker takes the most domains at once?
- Of the tools compared, Instant Domain Search and Namecheap Beast Mode publish the highest limit: up to 5,000 domains or terms in one search. Dynadot takes 1,000, GoDaddy 500 (2,000 signed in), and Porkbun and SimpleVerifier 100 without an account.
- Is a likely-available result a guarantee I can register the name?
- No. Availability tools read registry and DNS data; the registrar confirms at checkout. Premium, reserved and recently dropped names can look free and still be unregistrable or priced higher.
- Do I need an account to check domains in bulk?
- Not for most of these. Instant Domain Search, Dynadot and GoDaddy (up to 500) state no account is needed, and SimpleVerifier checks 100 a run without one. GoDaddy needs a sign-in for 2,000, and SimpleVerifier for 500.
- How does SimpleVerifier decide a domain is available?
- It asks the TLD's own RDAP registry for the name and checks whether it has nameservers in DNS. No registry record and no delegation reads as likely available; a registry record reads as registered, with registrar and expiry where published; anything unclear stays Unknown.
- Why would I use a non-registrar checker?
- A registrar's checker sits beside its own cart. A checker that sells nothing, like SimpleVerifier's, simply reports what the registry says, which some buyers prefer before they choose where to register.