.gov is the official top-level domain used by government agencies in the United States and is operated under a policy administered by the Cybersecurity and Infrastructure Security Agency (CISA). Unlike commercial domains, .gov sites are restricted to verified U.S. federal, state, tribal, and local government entities, making them a trusted signal for public information, services, and legal notices. This guide explains how .gov domains work, how to confirm a site is legitimate, common uses, and how these domains differ from other publicly available domains.
The definition and purpose of .gov
.gov is a sponsored top-level domain (sTLD) reserved for use by official government organizations in the United States. Eligibility is limited to federal government agencies and officially recognized state, local, and tribal governments. Registration and management are overseen by CISA, which sets policies for issuance, renewal, and security. Because eligibility is strictly controlled, .gov provides a high degree of assurance about the identity of the publishing entity, supporting transparency and public trust in online government services.
How .gov differs from .com and other domains
.com domains are typically used for commercial entities and are available for registration by individuals or organizations worldwide. .org is broadly used by nonprofits but is also open to general registration. In contrast, .gov is restricted to verified government organizations in the United States and is not available to the general public or to foreign governments without specific statutory authority. This restriction is enforced through eligibility review and documented attestation requirements, making .gov one of the most controlled domain types in the public sphere.
Restricted availability and eligibility
Only U.S. government agencies at the federal, state, local, and tribal levels can register .gov domains. Registration entities must provide official documentation and attest to their government status. As a result, most non-U.S. organizations and private entities cannot obtain .gov addresses. This controlled environment helps reduce impersonation and ensures that the domain remains a strong indicator of official government affiliation.
How to verify a .gov website is legitimate
To confirm that a website is a genuine government site, start by checking the URL directly in the address bar. A legitimate U.S. government site will use the exact domain ending .gov and will not rely on redirects or look‑alike domains. You can also use search engines to find the official site for a known agency and bookmark it. For higher‑risk actions, such as entering personal information, always verify the site’s HTTPS certificate and cross check agency contact details through official phone numbers or in‑person offices.
- Type the address manually or use a trusted bookmark to avoid phishing sites.
- Look for HTTPS encryption and a valid certificate in the browser address bar.
- Search for the agency name followed by site:gov to find authoritative domains.
- Contact the agency by phone using a number from an official document or verified directory.
Common uses for .gov domains
Government agencies use .gov sites to publish laws, regulations, and official notices. They also host public services such as forms, data portals, and emergency information. Many agencies provide statistics, reports, and research findings on these domains to ensure broad public access to authoritative information. Because of the restricted eligibility, users generally expect .gov pages to deliver official, accurate, and noncommercial content.
Security and privacy considerations on .gov sites
While .gov indicates a legitimate government entity, it does not automatically guarantee security practices or privacy policies. Users should review privacy statements, terms of use, and data handling practices on each site. When interacting with .gov services, follow agency guidance on authentication, secure communication, and the protection of personal information. Be cautious if a .gov page requests sensitive data through unexpected links or forms that do not use HTTPS.
International and non-U.S. government domains
Other countries use different top-level domains to represent official government websites. For example, .uk is used broadly in the United Kingdom, .gc.ca for Canadian government services, and .gouv.fr for French government sites. Since .gov is specific to the United States, users outside the U.S. should look for their own country’s official domain structures to find legitimate government services.
Quick verification checklist for .gov domains
| Check | Verified Detail | Source Type |
|---|---|---|
| Domain ends in .gov | Exact match without redirects | Domain registry policy |
| HTTPS encryption present | Valid certificate in browser | Browser security indicators |
| Agency name consistency | Matches official agency list | CISA and agency records |
| Contact information matches official sources | Phone and address verified | Published agency contacts |
| Purpose matches official services | Forms, data, notices, or emergency info | Agency website content |
The role of CISA in .gov management
The Cybersecurity and Infrastructure Security Agency (CISA) oversees the .gov domain under federal policy. CISA establishes eligibility criteria, handles registration requests, and maintains guidance for secure use of government domains. By managing this namespace, CISA helps protect the integrity of official communications and supports efforts to reduce fraud and misinformation online.
Recognizing common misuse and phishing tactics
Scammers sometimes use similar-looking domains to trick users. Always verify that the suffix is exactly .gov and be wary of added subdomains or misspellings. Do not click links in unsolicited messages that claim to lead to government sites. Instead, navigate directly to the official agency site or use verified search results. Reporting suspected fraudulent .gov impersonation helps protect public trust and supports ongoing security efforts.
When to use .gov and when alternatives make sense
.gov is appropriate when you need official government information, legal notices, forms, or regulated services. For general public content, news, or advocacy, other domains may be more suitable. Understanding the purpose of each domain type helps users choose the right site for their needs and improves overall online navigation efficiency.
Summary
.gov is the designated domain for official U.S. government agencies and is managed under strict eligibility and security policies. It provides a reliable indicator of government affiliation when used correctly. Verifying a .gov site involves checking the exact domain, HTTPS security, agency consistency, and official contact details. While .gov is not a guarantee of site security practices, it remains one of the clearest signals of legitimate government information and services available online.