Checks, extensions, and guides for names you’re serious about
BenOpt brings together availability checks, extension sweeps, RDAP and DNS lookups, defensive typo scans, and guides for anyone who lives in spreadsheets of name ideas. Browse the full tools hub or jump into a workflow below. Nothing requires an account.
Checks run on the Cloudflare edge using DNS-over-HTTPS and RDAP where registries publish it. Always confirm price and eligibility at your registrar.
Explore the hub
The point of BenOpt is not a single button. It is a small toolkit you can return to while you are naming something real: clear availability signals, a fast way to compare extensions, a rough appraisal layer, and articles when you want more depth than a tooltip.
We bias toward honesty over hype. DNS can be quiet on a registered name. RDAP does not cover every TLD the same way. When something matters for money or legal risk, treat these pages as a first pass, then confirm at a registrar and with proper counsel.
Read: how to check domain availability in bulk without losing your mindSample workflow
- 1
Shortlist strings
Paste full domains in the checker, or check domain extensions for one label you like.
- 2
Compare what looks open
Read the status chips carefully. Verified Available still deserves a registrar double-check before you buy.
- 3
What you can use today
12 tools in the catalog. Each opens in the browser with no signup wall.
Bulk domain checker
Paste a list of names and scan DNS in batches. Strong availability signals via Cloudflare DNS-over-HTTPS, with optional RDAP follow-up where supported.
Open tool →Check domain extensions
Enter one label without a dot and compare DNS and RDAP signals across 50 or 100 popular extensions in one pass.
Open tool →RDAP registration lookup
Read registrar narratives, registry status codes, and creation or expiry stamps without raw JSON.
Open tool →Domain age calculator
Translate RDAP registration timestamps into human calendar ages and upcoming renewal context.
Open tool →Typosquat generator
Generate defensive spellings with deterministic keyboard rules, then optionally batch-check DNS.
Open tool →Subdomain explorer
Probe a curated list of polite infrastructure prefixes against your apex with Cloudflare DoH.
Open tool →Domain appraisal
A lightweight, structural read on length, extension, and readability. A baseline signal, not a marketplace valuation.
Open tool →Extract domains from URLs
Paste a messy list of links or paths and instantly strip them down to pure domain roots.
Open tool →DNS record lookup
Check active A, AAAA, MX, NS, and TXT records for a domain to verify correct setup.
Open tool →Domain name maker
Combine a base word with popular industry terms to generate lists of brandable ideas.
Open tool →IDN Punycode converter
Translate internationalized domains containing special characters into standard ASCII format.
Open tool →Domain readability test
Evaluate a name for double letters and mobile typing distance on a standard QWERTY keyboard.
Open tool →View all tools including RDAP lookup, domain age, typosquat generator, and subdomain explorer.
People often start with extensions like .com, .io, .ai, .co, .dev, .app, .xyz, .net, .org, .me . The extension checker accepts many more.
How we approach domain checks
BenOpt is built around a simple workflow: use public DNS to spot obvious use, then ask RDAP when a name still looks empty. That pairing stays fast enough for long lists, but it stays honest about limits. DNS can be quiet on a registered name, and RDAP coverage varies by TLD, so we label rows carefully and ask you to confirm anything important at a registrar.
The bulk checker accepts hundreds of full domains per run and batches the work so your browser stays responsive. The extension check starts from a single left-hand label and builds a curated set of popular extensions automatically. For registry facts, use RDAP lookup and the domain age calculator. When you want a rough resale baseline on a shortlist, follow up with domain appraisal, which scores structure and language instead of live availability.
Curious who maintains this hub, why it exists, and how to get in touch about collaboration? Read who built BenOpt.
Privacy and accounts
We do not require an account to run the checkers. Your lists are not stored on our servers for later replay. Treat the output as a planning aid, not a contract: prices, premium tiers, and registry policies still live at the registrar you choose.
Note: For deeper essays on naming and domains, browse the blog. Nothing here replaces trademark counsel or registry contracts.
Start with a list
Paste one domain per line. Full URLs are fine. We remove duplicates and strip protocols before scanning.
Open bulk checkerGo deeper first
If you want framing before you touch a list, start with a guide or a single-domain appraisal.