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The .phd top-level domain is a generic domain intended for use by individuals and institutions associated with doctoral degrees, academic research, and higher education. It was created under ICANN’s new gTLD program and is operated by Charleston Road Registry Inc., a subsidiary of Google.
Open for general registration; no geographic or eligibility restrictions
The .phd extension is a generic top-level domain (gTLD) in the Domain Name System (DNS). It is managed by Charleston Road Registry Inc.. .phd was introduced in 2017. There are currently 4,691 domains registered under this extension. Registration prices start from USD 21.11 - 21.62. DNSSEC adoption stands at 11.8%.
Price range based on 2 registrars. Actual prices may vary.
Compare .phd domain registration and renewal prices across 2 registrars. Prices are in USD and updated daily.
| Registrar | Registration | Renewal | Transfer |
|---|---|---|---|
| porkbun Cheapest | $21.11 | $21.11 | $21.11 |
| dynadot | $21.62 | $21.62 | $21.62 |
Prices checked April 12, 2026. Prices exclude ICANN fees where applicable and may vary by registrar promotions or contract terms.
The .phd domain was proposed under ICANN’s New gTLD Program by Google through its subsidiary Charleston Road Registry Inc. It was delegated by IANA on June 15, 2017. The domain is managed as part of Google’s portfolio of registry operations, alongside other TLDs like .gmail and .app.
The .phd TLD serves a specific purpose in the domain ecosystem, providing users with clear context about the websites using this extension.
The .phd TLD is commonly used for the following purposes:
4,691
11.8%
| Metric | Value |
|---|---|
| Extension | .phd |
| Type | Generic TLD (gTLD) |
| Total Registrations | 4,691 |
| DNSSEC Adoption | 11.8% |
| Registration Price | USD 21.11 - 21.62 |
| Renewal Price | USD 21.11 - 21.62 |
| Registry Operator | Charleston Road Registry Inc. |
| Introduced | 2017-06-15 |
| Restrictions | Open for general registration; no geographic or eligibility restrictions |
Registration density analysis for .phd domains by character length. Currently 2,043 domains are registered across all lengths.
Total Registered
2.0K
Peak Saturation
15.4%
1-char names
DNSSEC Adoption
24.4%
Top Provider
Cloudflare
| Length | Registered | % Full | Density |
|---|---|---|---|
| 1 char | 4 | 15.4% | |
| 2 chars | 5 | 0.74% | |
| 3 chars | 59 | 0.34% | |
| 4 chars | 193 | 0.04% | |
| 5 chars | 278 | <0.01% | |
| 6 chars | 309 | <0.01% | |
| 7 chars | 280 | <0.01% | |
| 8 chars | 253 | <0.01% | |
| 9 chars | 209 | <0.01% | |
| 10 chars | 177 | <0.01% | |
| 11 chars | 155 | <0.01% | |
| 12 chars | 121 | <0.01% |
Updated daily from zone file analysis. Alpha density = registered / 26^length.
Compare across all TLDs →No restrictions; open to individuals and organizations globally.
The .phd TLD is available for registration through accredited domain registrars.
How does .phd 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 .phd 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.