Free tool · Launch

Domain extension guide

Forty endings, filterable by the three things that actually decide the choice: how a customer reads it, what it costs to renew rather than to buy, and whether you are even allowed to register it.

An ending, a word, or what you are worried about — try 'renewal' or 'restricted'.

Our judgement, not a measurement.

Renewal, not the first year. The first year is often a loss-leader.

40 of 40 extensions

  • .comCommercialReads as normal~$15–35/yr

    The only ending most people will type without being told. If the exact .com is gone, a slightly longer .com usually beats a shorter anything-else.

    Who can register: Anyone

  • .netNetworkReads as deliberate~$15–35/yr

    Reads as the consolation prize for .com, and customers who hear it will still type .com. Only worth it when the .com is a genuinely different business.

    Who can register: Anyone

  • .orgOrganisationReads as normal~$15–35/yr

    Strongly associated with nonprofits and community groups. Excellent if you are one; slightly odd for a plumbing firm.

    Who can register: Anyone, despite the name

  • .coColombia, sold globallyReads as deliberate~$35–80/yr

    The classic typo trap: a meaningful share of your traffic will land on the .com by accident. Buy both or neither.

    Who can register: Anyone

  • .bizBusinessReads as suspiciousUnder ~$15/yr

    Two decades of spam have made this read as low-quality regardless of who owns it. Hard to recommend.

    Who can register: Anyone

  • .infoInformationReads as suspiciousUnder ~$15/yr

    Same problem as .biz. Cheap for a reason.

    Who can register: Anyone

  • .usUnited StatesReads as normalUnder ~$15/yr

    Genuinely restricted — a nexus requirement applies and is occasionally enforced. Fine for a US business, unusable otherwise.

    Who can register: US citizens, residents, or organisations with a US presence

  • .uk / .co.ukUnited KingdomReads as normalUnder ~$15/yr

    In Britain .co.uk still outperforms .com for local trust. Register both the .uk and the .co.uk — they are separate registrations.

    Who can register: Anyone, but a UK address is required for .uk dispute purposes

  • .caCanadaReads as normal~$15–35/yr

    The presence requirement is real and checked. Strong local signal once you have it.

    Who can register: Canadian presence required — citizen, resident, or registered business

  • .au / .com.auAustraliaReads as normal~$15–35/yr

    The name must relate to your registered business name or trademark. Check the current rules before you plan around a specific string.

    Who can register: Australian presence and, for .com.au, a matching business registration

  • .ieIrelandReads as normal~$35–80/yr

    Registration is more paperwork than most, and the trust payoff locally is worth it.

    Who can register: Connection to Ireland required

  • .nzNew ZealandReads as normal~$15–35/yr

    Unusually open for a country code. Second-level .nz and .co.nz both exist and both get typed.

    Who can register: Anyone

  • .deGermanyReads as normalUnder ~$15/yr

    Dominant locally to the point where a German business on a .com looks foreign.

    Who can register: Administrative contact in Germany required

  • .ioBritish Indian Ocean TerritoryReads as deliberate~$35–80/yr

    Reads as a software startup and nothing else. Expensive, and it carries a live geopolitical question about the territory's future — a real, if slow-moving, risk.

    Who can register: Anyone

  • .aiAnguillaReads as deliberate~$35–80/yr

    Currently fashionable and priced accordingly. Fashion is not a durable reason to pick an ending you will own for a decade.

    Who can register: Anyone

  • .devDeveloperReads as deliberate~$15–35/yr

    Enforces HTTPS at the browser level, which is a genuine technical nicety and irrelevant to most small businesses.

    Who can register: Anyone

  • .appApplicationReads as deliberate~$15–35/yr

    Also HTTPS-only. Sensible for software, confusing for a bakery.

    Who can register: Anyone

  • .designDesignReads as deliberate~$35–80/yr

    Works when the ending completes the name — studio.design reads well. Otherwise it is just an expensive .com.

    Who can register: Anyone

  • .studioStudioReads as deliberate~$15–35/yr

    Common among photographers and creative practices. Reads as deliberate rather than second-choice.

    Who can register: Anyone

  • .photographyPhotographyReads as deliberate~$15–35/yr

    Long, but it means the short part of your name can be just your name.

    Who can register: Anyone

  • .plumbingPlumbingReads as deliberate~$35–80/yr

    Trade-specific endings are memorable in speech and expensive to renew. They also lock you into one trade permanently.

    Who can register: Anyone

  • .contractorsContractorsReads as deliberate~$35–80/yr

    Same trade-off as .plumbing. Check the renewal price before you commit, not the first-year offer.

    Who can register: Anyone

  • .servicesServicesReads as deliberate~$15–35/yr

    Generic enough to survive a change of trade, vague enough to add nothing.

    Who can register: Anyone

  • .companyCompanyReads as deliberateUnder ~$15/yr

    Cheap and harmless. Reads as a fallback.

    Who can register: Anyone

  • .shopShopReads as deliberate~$15–35/yr

    Increasingly normal for retail, and unambiguous about what you are. A reasonable pick if the .com is gone.

    Who can register: Anyone

  • .storeStoreReads as deliberate~$35–80/yr

    Watch the renewal — heavily discounted first years are the norm here.

    Who can register: Anyone

  • .agencyAgencyReads as deliberate~$15–35/yr

    Well established among marketing and creative firms.

    Who can register: Anyone

  • .lawLawReads as normal~$35–80/yr

    One of the few endings with genuine verification behind it, which is exactly why it carries trust. Expensive.

    Who can register: Verified, licensed legal professionals only

  • .bankBankReads as normalVaries widely

    Heavily restricted and heavily priced. Listed here mainly as the example of what verification does for trust.

    Who can register: Verified financial institutions only

  • .healthHealthReads as deliberate~$35–80/yr

    Requirements here have changed over time. Confirm with the registrar rather than trusting any article, including this one.

    Who can register: Anyone — verification requirements vary, check current registry policy

  • .nycNew York CityReads as normal~$15–35/yr

    City endings are a strong local signal when they are genuinely restricted, and this one is.

    Who can register: A physical address in New York City is required

  • .londonLondonReads as deliberate~$15–35/yr

    Not restricted, so it signals intent rather than presence — still reads well on a van.

    Who can register: Anyone

  • .berlinBerlinReads as normal~$15–35/yr

    Restricted, and well adopted locally.

    Who can register: A connection to Berlin is required

  • .vegasLas VegasReads as deliberate~$35–80/yr

    Memorable, expensive, and unmistakably regional.

    Who can register: Anyone

  • .miamiMiamiReads as deliberate~$15–35/yr

    Works for hospitality and property; odd for anything national.

    Who can register: Anyone

  • .clubClubReads as deliberateUnder ~$15/yr

    Genuinely good for a club. Widely used for spam otherwise, which colours how it reads.

    Who can register: Anyone

  • .xyzGenericReads as suspiciousUnder ~$15/yr

    Extremely cheap, extremely abused, and blocked outright by some corporate mail filters. Your invoices may not arrive.

    Who can register: Anyone

  • .topGenericReads as suspiciousUnder ~$15/yr

    Consistently near the top of abuse rankings. Avoid for anything that has to be believed.

    Who can register: Anyone

  • .onlineOnlineReads as suspicious~$35–80/yr

    Cheap to buy, surprisingly expensive to renew, and carries a low-quality association. An unhappy combination.

    Who can register: Anyone

  • .siteSiteReads as suspicious~$15–35/yr

    Says nothing about you and is common in spam. Rarely the right answer.

    Who can register: Anyone

What this cannot tell you

Three honest gaps. Price: registrar pricing moves constantly and varies by promotion, so these are bands rather than prices — always check the renewal figure, never the first year, because a $1 first year against a $45 renewal is the standard shape of this market. Eligibility: registry rules change, and where we are unsure the entry says to check rather than guessing. Trust: the “how it reads” column is an editorial judgement about customer perception, not data — a well-known business on a .xyz suffers nothing, and a new one does. Nothing here checks availability; that needs a registrar.

The link reopens the guide with the same filters applied.

You do not need a domain to have a website.

Publish on a Black Nile address today for nothing, and attach a domain later once you have decided which ending you actually want.

Build my site free
No sign-upRenewal prices, not first-yearHonest about what we cannot know

The short answer: For most small businesses the answer is still .com, and when the exact match is gone the best move is usually a slightly longer .com rather than a shorter alternative ending. After that, the useful distinctions are not aesthetic. They are: does the ending carry a registration restriction — restricted endings like .law, .ca and .nyc read as more trustworthy precisely because someone checked — and what does it cost to renew, because a one-dollar first year against a forty-five-dollar renewal is the standard shape of this market and the number that matters is the second one.

This runs entirely in your browser. Nothing you type here is sent to us or to anyone else — there is no server call, no account, and no email required to see your result or take it away with you. Filtering happens in this tab; nothing is looked up or logged.

How to use the extension guide

Filter down to what survives your actual constraints.

  1. Search for an ending, or a word — try 'renewal', 'restricted' or your trade.
  2. Filter by how the ending reads to a customer: normal, deliberate, or suspicious.
  3. Filter by renewal price band. This is the renewal, not the first-year offer.
  4. Filter by whether anyone can register it or whether it requires a connection or a licence.
  5. Read the note on each survivor — it is the single most useful thing to know before choosing.

Try filtering to reads as normal, restricted, and cheap. Almost nothing survives, and that is the real finding: verification costs registries money, and they charge for it.

Why .com still wins, and what to do when it is gone

Not tradition — typing behaviour.

People type .com without being told. Say your domain out loud to someone and a meaningful proportion will append .com regardless of what you actually said, because thirty years of habit is a strong prior. That is the whole argument, and it is a good one.

It matters most for businesses whose name travels by voice, which is nearly all local businesses — recommended over a fence, read off a van, said on a phone call. Every one of those interactions relies on the listener reconstructing the address from memory, and .com is what they reconstruct.

So when the exact match is taken, the usual best answer is a longer .com rather than a shorter something else. Add your town, add your trade, add a word — boiseriversideplumbing.com beats riverside.plumbing for a business whose customers hear the name before they see it.

The exception is a business whose customers arrive by clicking rather than typing: they find you through a map listing, a directory, a social profile, a link. For those, the ending matters considerably less, and a distinctive alternative can be worth having.

Restriction is where trust actually comes from

The endings that read best are the ones somebody has to check.

There is a pattern in the trust column worth noticing. The endings that read as most credible are almost all the ones with a genuine eligibility requirement: .law needs a verified licensed professional, .bank needs a verified institution, .ca and .au need a real presence in the country, .nyc needs an address in the city.

That is not a coincidence. An ending anyone can register at any price carries no information about the registrant, so it can carry no trust. An ending that required someone to prove something tells a reader that a check happened.

The practical consequence is that a restricted ending you qualify for is often worth more than an unrestricted one that sounds better. A local business on a restricted city or country ending is signalling something checkable, which is rare and cheap.

It also explains why the cheap unrestricted endings sit in the risky category. It is not snobbery about .xyz — it is that near-zero registration cost with no checks attracts bulk abuse, and some corporate mail filters block them outright, which means your invoices may silently not arrive.

Look at the renewal, never the first year

The single most common way people are surprised by a domain.

The first-year price of a domain is a marketing number. Registrars discount it heavily, sometimes to a dollar, because acquiring a customer who will renew for a decade is worth far more than the first year's margin. This is normal and not deceptive on its own.

What catches people is the size of the gap. Plenty of endings sell for a couple of dollars in year one and renew at forty or fifty — and renewal is automatic by default, so the first you know is a card charge you did not expect. Newer generic endings and the fashionable ones are the worst for this.

So the price band shown here is the renewal band, deliberately. Before you register anything, find the renewal price on the registrar's own pricing page rather than the checkout, and multiply it by ten. That is the real cost of the decision, because a domain you build a business on is a domain you keep.

One more thing worth checking at the same time: the transfer-out policy and whether privacy protection costs extra. Both are cheap to establish now and irritating to discover later.

Trade-specific endings: memorable, expensive, and a commitment

The honest case for and against .plumbing.

Endings like .plumbing, .contractors and .photography are genuinely memorable in speech, and they let the short part of your domain be just your name — riverside.plumbing rather than riversideplumbingboise.com.

Two costs. They tend to sit in the premium renewal band, so the ten-year figure is meaningfully higher than a .com. And they commit you to one trade permanently, which is fine until the day you add a second one and your domain contradicts your services page.

There is also an adoption question that nobody can answer confidently. These endings are not unfamiliar to customers exactly, but they are not automatic either — some people will still type .com, and you cannot know what proportion for your particular audience.

The pragmatic position: if you go with one, register the equivalent .com too if it is available and cheap, and redirect it. That costs fifteen dollars a year and removes the entire category of problem.

The three things this guide is honest about not knowing

Stated here rather than buried.

Price. Registrar pricing changes constantly, varies by promotion, and differs between registrars for the same ending. The bands here are orientation, and the only authoritative number is the renewal price on the registrar's page today.

Eligibility. Registry rules change, and several endings have quietly tightened or loosened their requirements over the years. Where we are unsure, the entry says to check rather than guessing — which is less satisfying and more useful.

Perception. The trust column is an editorial judgement about how a typical customer reads an ending, not data. It is also context-dependent in a way a column cannot capture: a well-known business on a .xyz suffers nothing, and a brand-new one does. Read it as a prior, not a verdict.

What this guide genuinely cannot do at all is tell you whether a name is available. That needs a registrar lookup, and any tool claiming otherwise is guessing.

Decision shortcut

If you are in a hurry

The answer for most small businesses, in five rows.

SituationGo withWhy
The .com is available.comPeople type it without being told. Stop reading and buy it.
The .com is takenA longer .comAdd your town or trade. Beats a shorter alternative ending for a name that travels by voice.
You qualify for a restricted local ending.ca, .co.uk, .nyc, .berlinRestriction is where trust comes from, and local endings outperform .com locally.
You are a licensed profession.law and similarVerified endings are rare and the verification is the point.
Someone is offering you a $1 domainCheck the renewal firstA $1 first year against a $45 renewal is the standard shape of this market.

Notice what is not on this list: any advice to pick something distinctive for its own sake. A memorable ending on a domain nobody can find is worth less than a boring one they type correctly.

FAQ

Questions, answered

The things owners ask before they trust a number like this.

Which domain extension is best for a small business?

.com, and it is not close for most local businesses. People type it without being told, which matters enormously for a business whose name travels by voice — recommended over a fence, read off a van, said on a phone. If the exact match is gone, a longer .com with your town or trade in it usually beats a shorter alternative ending. The exception is a business whose customers arrive by clicking rather than typing.

Is .co as good as .com?

No, and the reason is specific: it is a one-character typo away from .com, so a meaningful share of people who mean to reach you will land on the .com instead — which someone else owns. If you use .co, you should own the matching .com and redirect it, at which point you have paid for two domains. It is also usually in the premium renewal band. It works when the .com is genuinely a different business and you accept the leakage.

Do domain extensions affect SEO?

Not meaningfully. Google has said repeatedly that new generic endings are treated the same as .com, and there is no ranking bonus or penalty from the ending itself. Country-code endings do carry a geographic signal — a .co.uk is understood as targeting the UK — which helps if you serve one country and hurts if you serve several. Everything else about extension choice is about human perception, not search engines.

Are cheap domain extensions safe to use?

The very cheap unrestricted ones carry a real cost. Near-zero registration price with no eligibility checks attracts bulk abuse, and some corporate mail filters and network security products block those endings outright — which means your emails may silently not arrive at business customers. That is a serious operational problem for a business, quite separate from how the ending looks. Check the renewal price too; cheap first years frequently renew high.

Should I buy multiple domain extensions?

Buy the .com if you are using something else, and redirect it. Beyond that, defensive registration of every variant is usually a waste — the scenario where a competitor buys your .net and profits from it is much rarer than the people selling you defensive registrations suggest. Two exceptions worth the money: common misspellings of a name with a spelling trap, and the .com of anything close enough to be confused with you.

What is the difference between .co.uk and .uk?

They are separate registrations of the same name and both are used in Britain. The .co.uk is far more established and is what most people will type; the shorter .uk was introduced later. If you are a UK business, register both — they are inexpensive — and redirect one to the other. Locally, .co.uk generally outperforms .com for trust, which is unusual and worth knowing.

Can anyone register any domain extension?

No. Several have genuine restrictions: .ca requires a Canadian presence, .us requires a US nexus, .law requires a verified legal professional, .nyc requires a New York City address, .bank requires a verified financial institution. Those restrictions are checked, sometimes retroactively. They are also the reason those endings read as trustworthy — an ending anyone can buy carries no information about who bought it.

How much should a domain cost per year?

Roughly $10 to $20 a year for a .com or a common country code at renewal. Premium generic endings run $35 to $80. What matters is the renewal price, not the first-year offer — a one-dollar first year against a forty-five-dollar renewal is the standard shape of this market, and renewal is automatic by default. Find the renewal price on the registrar's pricing page and multiply it by ten before you commit.

What happens if I let my domain expire?

There is usually a grace period of a few weeks during which you can renew normally, followed by a redemption period where recovery costs substantially more, followed by the domain being released. If it was a domain anyone wants, it will be registered within minutes of release by an automated service, and buying it back is then a negotiation rather than a renewal. Turn on auto-renew, keep the card on file current, and note the registrar somewhere you will find it in two years.

More free tools

Others that pair with this one

Every one runs in your browser, free, with no sign-up.

See every free tool

Related

Where to go next

The reading that turns this result into a decision.

You do not need a domain to have a website.

Publish on a Black Nile address today for nothing, and attach a domain later once you have decided which ending you actually want.