What Is the .us Domain? America's Country-Code TLD Explained

The .us domain is the official country-code Top-Level Domain (ccTLD) for the United States — and one of the very first ccTLDs ever delegated. Where extensions like .co are marketed as borderless ".com" substitutes, .us is deliberately the opposite: a namespace tied to American identity, governed under US federal policy, and reserved for registrants with a genuine US presence. For a business, brand, or organization that wants to say "we are American" in its web address, .us is the most literal way to do it.

This guide covers what .us really is, who runs it (the operator changed in recent years), the all-important Nexus Requirement that decides who can register, how it is priced, and how it behaves for SEO and email — so you can decide whether it fits your project.

.us at a glance

What is .us?

.us is the country-code Top-Level Domain (ccTLD) assigned to the United States under the ISO 3166-1 standard (country code US), the same two-letter system the Internet Assigned Numbers Authority (IANA) uses to delegate country codes. Unlike a gTLD such as .com, .us represents a single nation's namespace and is administered under that nation's policy rather than a standard ICANN registry agreement.

What makes .us distinctive is that it actually behaves like a national ccTLD — not a repurposed global one. The namespace sits under the US Department of Commerce, managed through the National Telecommunications and Information Administration (NTIA), and IANA lists the registry operator as Registry Services, LLC, based in Tempe, Arizona. Registration is open only to parties with a real connection to the United States, a policy known as the Nexus Requirement (more on that below).

Crucially for international businesses, search engines do treat .us as a country-specific extension. Google groups ccTLDs like .us with the country-targeted set — it explicitly treats only a small handful of vanity ccTLDs (such as .tv and .me) as generic, and .us is not among them. So a .us site sends a strong "this is for the United States" signal, which is an advantage for US-focused projects and a constraint for anyone chasing a global audience.

History of .us

The .us TLD was delegated on February 15, 1985, making it one of the earliest country-code domains on the internet. In its early years it was administered by Jon Postel and the Information Sciences Institute (ISI) at the University of Southern California, and was organized largely as a rigid geographic hierarchy — names structured by locality and state, such as city.state.us. This made .us technically tidy but awkward to use, and it never gained the everyday popularity of .com.

The modern era began around the turn of the millennium. Oversight consolidated under the US Department of Commerce / NTIA, and in 2001 Neustar won the contract to operate the namespace. Neustar's biggest change came in April 2002, when it opened up flat second-level registration — letting people register yourname.us directly instead of navigating the old geographic tree. That single change unlocked the creative, brandable side of .us, including the famous domain hack del.icio.us, registered in May 2002.

The most consequential recent milestone is the operator transition. GoDaddy Registry acquired Neustar's registry business, and the .us contract moved to Registry Services, LLC — the GoDaddy Registry entity that IANA now lists as the manager. Throughout these changes, the defining policy constant has remained: a US presence is required, and registrant information has historically been held to a high transparency standard.

How people use .us

Because .us reads as an unambiguous statement of American identity, it attracts a focused, US-leaning crowd:

• US businesses and brands that want their nationality baked into the address.
• Local, civic, and government-adjacent sites where a clearly American suffix reinforces trust and place.
• Organizations with a US footprint, including US arms of foreign companies that qualify under the nexus rule.
• Domain hacks, where the suffix completes a word — the classic example being del.icio.us.
• Patriotic, campaign, or community projects that lean into the "us / U.S." double meaning.

Who it's not ideal for: Projects targeting a global audience, since search engines read .us as US-specific; and anyone outside the United States who cannot satisfy the Nexus Requirement.

Notable sites using .us

• del.icio.us — the original home of Delicious, the pioneering social-bookmarking service. It remains the textbook example of a domain hack, spelling "delicious" straight across the dot, and it did more than any campaign to make .us feel playful and brandable. (Delicious later moved to a conventional .com, a journey covered in our del.icio.us to delicious.com case study.)
• Government and public-sector sites — many state, county, and municipal entities use .us under the geographic structure, reinforcing it as the credible "official American" namespace.

These cases show the two faces of .us: a serious, place-anchored extension for American institutions, and a clever canvas for word-completing domain hacks.

.us vs other domains

Choose .com when you can get the exact name and want a globally neutral default. Reach for .us when an explicitly American identity is an asset and your audience is US-based. Pick .co when you want a short, global, "company"-flavored alternative without geo-targeting, and .io for developer- and infrastructure-focused tech brands.

Why choose .us?

• Unambiguously American. No other mainstream extension says "United States" as directly. For domestic brands, that is exactly the point.
• Strong US geo-signal. Because Google treats .us as country-targeted, it can reinforce relevance for US-focused search.
• Excellent availability. Far fewer registrations than .com means short, one-word, and brandable names are often still open.
• Trust by association. Its use across American government and civic sites lends it an official, credible feel.

Things to consider

• Not global. This is the flip side of its strength: search engines box .us into the United States, so it is a poor fit for international ambitions.
• The Nexus Requirement is real. You must qualify. Registrations can be challenged and even revoked if a registrant has no genuine US presence.
• Historically transparent WHOIS. .us policy has long emphasized accurate, public registrant data tied to the nexus rule, so expect less anonymity than some other TLDs — though WHOIS privacy options have evolved over time.
• A nationally governed ccTLD. Long-term rules are set under US Department of Commerce / NTIA policy and the appointed operator, not by a standard ICANN registry agreement.

Who can register a .us domain?

Registration restrictions: US Nexus Requirement. This is the single biggest difference between .us and openly marketed ccTLDs like .co. You cannot register a .us domain from anywhere in the world with no strings attached. To be eligible, a registrant must satisfy the Nexus Requirement by falling into one of these categories:

• A US citizen or permanent resident, or a person who otherwise resides in the United States.
• A US entity or organization — for example, a company, nonprofit, or other organization organized under the laws of a US state or the United States.
• A foreign entity or organization with a bona fide presence in the United States — meaning a regular, lawful activity or operation in the country, not merely an intent to register the domain.

Beyond eligibility, .us has historically required accurate, public WHOIS data, reflecting a transparency standard tied to the nexus policy; anonymizing proxy registrations have traditionally been restricted, though privacy handling has evolved. DNSSEC is supported for added DNS security. Because .us is a nationally governed ccTLD, the authoritative source for current eligibility and policy is the operator under US Department of Commerce / NTIA oversight, and you should confirm your eligibility before registering through any registrar.

.us pricing and value

.us generally sits in a competitive, mid-to-low price band — it is rarely the most expensive extension, and registries often run promotional first-year rates. A few dynamics shape what you'll pay:

• Premium names exist. Short, dictionary, or high-demand .us names may carry premium registration and sometimes higher renewal fees.
• First-year vs. renewal pricing differ. As with most TLDs, an introductory rate is not the renewal rate; always check the standard renewal before committing a brand.
• What drives cost. Name length and desirability, premium classification, and registry wholesale pricing are the main factors. Aftermarket values for the best one- and two-character or domain-hack-friendly .us names can be significant.

For exact, current figures, check live pricing at registration time — this page intentionally quotes no numbers.

Reputation and email deliverability

.us enjoys a solid, credible reputation, helped by the Nexus Requirement and its long use across American government and civic sites. Because it is not an open, anyone-anywhere namespace, it has avoided much of the bargain-bin spam connotation that has dogged some ultra-cheap new gTLDs.

For email deliverability, the suffix itself is rarely the deciding factor — modern spam filters weigh sending reputation, SPF/DKIM/DMARC authentication, and list hygiene far more than the TLD. A properly authenticated .us sender should reach inboxes normally. The main consideration is audience fit: a .us address signals an American sender, which is reassuring to US recipients but may feel out of place for an international correspondent.

Branding and naming tips

• Lean into American identity. .us is at its best when "we are a US company/organization" is a selling point.
• Mind the audience. If you plan to grow internationally, weigh the US geo-signal carefully before building a brand on .us.
• Domain hacks shine. Names that naturally end in "us," or that complete a word across the dot (as in del.icio.us), can produce memorable, compact URLs.
• Confirm eligibility first. Before falling in love with a name, make sure you (or your organization) actually satisfy the Nexus Requirement.

How to register a .us domain at Namefi

1. Confirm that you meet the US Nexus Requirement.
2. Search for your desired name and the .us extension.
3. Choose an available name (and check whether it is classified as premium).
4. Register and configure DNS.

Namefi is an ICANN-accredited registrar that bridges Web2 and Web3, with transparent pricing, fast DNS management, and the option to hold your name as a tokenized domain for easier transfer and provable ownership. If you are new to extensions and how they work, start with our primer on what is a domain and the broader domain terminology guide.

Frequently asked questions

Can anyone register a .us domain?

No. Unlike most marketed ccTLDs, .us enforces a US Nexus Requirement: registrants must be US citizens or residents, US-organized entities, or foreign organizations with a bona fide presence in the United States. There is no open, anyone-anywhere registration.

Is .us good or bad for SEO?

It depends on your audience. Google treats .us as a country-targeted ccTLD for the United States, not a generic one, so it sends a strong signal that your site is meant for a US audience. That helps US-focused sites and works against sites that want to rank globally.

Who runs the .us domain?

The .us namespace is overseen by the US Department of Commerce through the NTIA. The current registry operator is Registry Services, LLC, a GoDaddy Registry company, which took over from Neustar around 2020. IANA lists Registry Services, LLC as the manager.

What is the .us Nexus Requirement?

The Nexus Requirement is the eligibility rule that limits .us to parties with a genuine connection to the United States. It covers US citizens and residents, entities organized in the US, and foreign organizations that maintain a bona fide US presence such as a regular operation or activity.

Related resources

• .com TLD guide
• .co TLD guide
• .io TLD guide
• Domain hacks explained
• What is a domain?
• Domain terminology guide
• Glossary: registrar
• Glossary: WHOIS