Check .IO domain availability, register a new .IO domain, search multiple names in bulk, or transfer your existing .IO domains to NiceNIC. Built for startups, SaaS products, developer tools, AI products, API platforms, crypto projects, games, launch pages, agencies, hosting providers, domain investors, and resellers.
Current .IO first-year price is shown by account level. Upgrade account level for bulk registration, transfers, reseller tools, and API support.
A .IO domain can be a practical choice for ranking websites, review projects, campaigns, creator pages, brandable names, and reseller portfolios. NiceNIC supports the full path after search: registration, renewal, transfer, WHOIS privacy where available, bulk domain lists, reseller API use, and account support.
Add funds and pay for domain services using supported crypto options such as USDT, BTC, ETH, and LTC. Automated crypto deposit recording helps account balances update quickly after successful confirmation, with no extra NiceNIC processing fee for automated deposits.
NiceNIC provides real human support, not only scripted replies. Our team can review your domain needs, explain practical options, and give account-level, transfer, bulk registration, and reseller suggestions to help your domain business grow.
NiceNIC does not take arbitrary action against domains. Abuse reports are reviewed based on available evidence, policies, and registry requirements, with domain owners guided to review, fix, or explain reported issues where appropriate.
Manage .IO together with 2,500+ domain extensions from one NiceNIC account, including country-code, generic, and new domain extensions. This helps businesses, investors, and resellers build global domain coverage more efficiently.
NiceNIC supports 47+ website languages, creating a multilingual registrar experience for international users and teams. This makes domain registration, renewal, transfer, account management, and support easier across different markets.
For hosting providers, agencies, platforms, and domain resellers, NiceNIC supports reseller API access for domain registration, renewal, transfer, DNS, account-level pricing, and custom nameserver services.
Create an online home for your software, developer tools or digital product. Pair your brand with a short .IO name that is easy to share.
Webatla dataset dated 2026-09-15.
Strong fit for startups, APIs, developer tools, SaaS, AI products, and product launches.
Active-domain counts as of this date.
See how the global domain market is divided across major categories. .IO belongs to the country-code domain group (ccTLDs).
Create an online home for your software, developer tools or digital product.
.IO can connect naturally with developer tooling, APIs, platforms, data products, AI tools, dashboards, infrastructure, and software services.
.IO has become familiar in startup and product-launch contexts, especially where a short, modern, non-.COM domain is acceptable to the target users.
When the preferred .COM is unavailable or expensive, a clean .IO name can be easier to brand than a long hyphenated or multi-word alternative.
Compare the size of .IO with selected country-code domains. Each bar shows the observed active-domain count for that extension.
Publicly reported .IO sales show examples of prices paid for individual names. A past sale does not determine the value of another domain.
Startups, developer tools, agencies, and resellers use .IO in different ways.
Use .IO for a concise product, platform, or company name.
Use .IO when input/output and developer meaning fit the product.
Use .IO for launch campaigns, client platforms, and product portfolios.
Offer .IO with clear notes on pricing, eligibility, renewal, and support.
If you already own .IO domains elsewhere, transfer decisions should not be based only on one renewal invoice. Check transfer eligibility, ownership access, billing reliability, support response time, API needs, and long-term domain management.
Paste multiple .IO names, remove duplicates, review the count, and continue to bulk registration. This is useful for domain investors, brand teams, agencies, hosting providers, and resellers.
Enter one name per line, with or without .IO. The tool removes duplicates and prepares a clean list for bulk registration.
If your business sells hosting, websites, SaaS, agency services, or brand protection packages, NiceNIC reseller APIs can support domain registration, renewal, transfer, DNS, and account management.
# NiceNIC API v2 endpoint
# Applies to supported domain extensions, including .com, .net, .org, ccTLDs, and new gTLDs
https://api.nicenic.net/v2/
# Required headers
Authorization: username:api_secret
Content-Type: application/json
# Check domain availability across multiple extensions
curl "https://api.nicenic.net/v2/?category=domain&action=check&domains=example.com,example.net,mybrand.org" \
-H "Authorization: username:api_secret" \
-H "Content-Type: application/json"
# Get registration / renewal / transfer pricing for any supported extension
curl "https://api.nicenic.net/v2/?category=domain&action=get_price&domain=example.com&type=register&year=1" \
-H "Authorization: username:api_secret" \
-H "Content-Type: application/json"
# Change the domain value to query another TLD:
# example.com, example.net, example.org, example.ai, example.co
# Standard response format
{
"code": 0,
"msg": "success",
"data": {}
}
Short answers for buyers considering .IO for startups, SaaS products, developer tools, APIs, AI products, bulk registration, transfer, WHOIS visibility, payment, or reseller/API use.
Use the search box on this page to check .IO domain availability. Enter your preferred name, with or without .io, and continue toward registration if the name is available.
.IO is well suited for startups, SaaS products, developer tools, API platforms, AI products, crypto projects, games, data products, open-source projects, product launches, and tech-focused landing pages.
.IO is officially the country-code TLD for the British Indian Ocean Territory. In market use, however, it is widely adopted by technology companies because “IO” is associated with input/output and software products.
.IO registry information states that anyone, anywhere can register .IO domains. NiceNIC’s current .IO page also indicates individual and company registration are supported and no extra documents are required, subject to registry, registrar, and applicable policy requirements.
See the current first-year prices above for each NiceNIC account level. Check renewal and transfer prices before ordering, and confirm the final price at checkout.
Yes. You can paste multiple names into the bulk tool and continue to bulk .IO domain search. This is useful for startup names, SaaS products, API brands, developer tools, AI products, crypto projects, agencies, hosting providers, domain investors, and resellers.
.IO domains are available for 1–10 years at NiceNIC. NiceNIC’s .IO information states that .IO names may use 3–63 characters, should start and end with a letter or number, and may use letters, numbers, and hyphens subject to standard domain-name rules.
.IO is a ccTLD. NiceNIC’s .IO information states that the .IO zone does not support private registration / WHOIS contact hiding, so registrant contact information may be shown in full or in part to the public.
Yes. To start a domain transfer, unlock the .IO domain at the current registrar, obtain the Auth Code / EPP code, confirm eligibility, and submit the transfer through NiceNIC. NiceNIC states that .IO transfers require at least a 1-year renewal.
Yes. NiceNIC supports bulk domain management, reseller API integration, and global TLD coverage, making it suitable for teams managing .IO startup domains, product launches, developer projects, and reseller orders.
Register a new .IO, transfer an existing domain, or upgrade your account level for bulk registration and reseller API use.
