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The .bio TLD is a generic top-level domain intended for individuals, organizations, and businesses connected to life sciences, health, sustainability, organic products, and biological innovation. While open to general registration, it carries special implications for organic food and agricultural sectors due to European regulatory concerns.
Open for general registration; however, registrants using .bio for organic food products may be subject to compliance expectations aligned with EU standards.
The .bio extension is a generic top-level domain (gTLD) in the Domain Name System (DNS). It is managed by Identity Digital Limited. .bio was introduced in 2014. There are currently 57,075 domains registered under this extension. Registration prices start from USD 5.57 - 74.57. DNSSEC adoption stands at 4.9%.
Price range based on 3 registrars. Actual prices may vary.
Compare .bio domain registration and renewal prices across 3 registrars. Prices are in USD and updated daily.
| Registrar | Registration | Renewal | Transfer |
|---|---|---|---|
| dynadot Cheapest | $5.57 | $60.14 | $60.14 |
| porkbun | $5.66 | $58.19 | $58.19 |
| resellerclub | $74.57 | $89.31 | $74.57 |
Prices checked April 7, 2026. Prices exclude ICANN fees where applicable and may vary by registrar promotions or contract terms.
The .bio domain was delegated to Starting Dot Limited on May 15, 2014, after passing ICANN’s new gTLD application process. In August 2016, Afilias acquired Starting Dot and took over registry operations. Identity Digital Limited became the registry operator in 2019 after acquiring Afilias’s TLD portfolio. A notable point of contention arose from the European Union’s concern that '.bio' could be misleading for organic food labeling, leading to internal compliance guidelines for registrants in that space.
The .bio TLD serves a specific purpose in the domain ecosystem, providing users with clear context about the websites using this extension.
The .bio TLD is commonly used for the following purposes:
57,075
4.9%
If .bio doesn't meet your needs, consider these alternatives:
| Metric | Value |
|---|---|
| Extension | .bio |
| Type | Generic TLD (gTLD) |
| Total Registrations | 57,075 |
| DNSSEC Adoption | 4.9% |
| Registration Price | USD 5.57 - 74.57 |
| Renewal Price | USD 58.19 - 89.31 |
| Registry Operator | Identity Digital Limited |
| Introduced | 2014-05-15 |
| Restrictions | Open for general registration; however, registrants using .bio for organic food products may be subject to compliance expectations aligned with EU standards. |
Registration density analysis for .bio domains by character length. Currently 48,191 domains are registered across all lengths.
Total Registered
48.2K
Peak Saturation
65.4%
1-char names
DNSSEC Adoption
5.4%
Top Provider
Cloudflare
| Length | Registered | % Full | Density |
|---|---|---|---|
| 1 char | 17 | 65.4% | |
| 2 chars | 133 | 19.7% | |
| 3 chars | 3,885 | 22.1% | |
| 4 chars | 5,032 | 1.1% | |
| 5 chars | 5,936 | 0.05% | |
| 6 chars | 6,654 | <0.01% | |
| 7 chars | 6,602 | <0.01% | |
| 8 chars | 5,746 | <0.01% | |
| 9 chars | 4,831 | <0.01% | |
| 10 chars | 4,087 | <0.01% | |
| 11 chars | 2,973 | <0.01% | |
| 12 chars | 2,295 | <0.01% |
Updated daily from zone file analysis. Alpha density = registered / 26^length.
Compare across all TLDs →No geographic or professional restrictions. Registrants should avoid misleading claims about organic status if operating in EU-regulated markets.
The .bio TLD is available for registration through accredited domain registrars.
How does .bio compare to similar top-level domains? This comparison covers pricing, type, and availability to help choose the right domain extension.
View the full TLD Directory to browse all 1,900+ top-level domains with pricing, registration density analysis, and DNSSEC adoption rates.
DNSChkr maintains a comprehensive TLD directory covering all 1,900+ active top-level domains. The data on this page combines multiple authoritative sources to provide information not found in standard TLD listings.
Domain registration counts and density analysis are computed daily from TLD zone files, providing accurate registration statistics rather than estimates.
DNSSEC deployment percentages are measured by scanning actual DNS records across all registered domains in each TLD zone.
Registration, renewal, and transfer prices are checked hourly across multiple accredited registrars and compared automatically.
DNS provider distribution is calculated from nameserver records, showing which hosting providers serve the most domains in each TLD.
Use DNSChkr tools to inspect any .bio domain: run a full DNS health check, check DNS propagation, look up WHOIS records, or verify email authentication.
Disclaimer: The information on this page is sourced from IANA, ICANN, and respective registry operator publications, then structured and formatted with the assistance of AI. While accuracy is a priority, details such as pricing, registration requirements, and policies may change. Always verify with the official registry or an accredited registrar before making registration decisions.