.phd Domain: For Doctoral Degree Holders and Researchers

Registered domains Updated 10 Jun 2026 · Source: ntldstats.com

2,916

Domains

#542

Worldwide rank

0.00%

Of TLD census

425M

Census universe

.phd holds 2,916 registered domain names. That makes it the 542nd largest TLD by domain count and 0.00% of the global TLD census of 424,986,374 domains we track. By any reasonable measure that is a very small TLD.

Either side of .phd on the league table: .esq sits one place above with 2,994 domains, and .fishing sits one place below with 2,887.

Counts are the most recent public figure available from the registry or from ntldstats.com, refreshed weekly. Citation policy.

About .phd

.phd is a generic top-level domain for individuals and organizations connected to doctoral degrees and advanced research. It is operated by Charleston Road Registry Inc., a Google affiliate. The domain is open to anyone who holds a PhD or is affiliated with a PhD granting institution, though exact eligibility rules are set by the registry. It provides a dedicated online space for academics, researchers, and professionals to showcase their scholarly work and credentials. The domain was delegated in June 2017, making it a relatively recent addition to the web's address system.

Eligibility & restrictions

Open to individuals and organizations with a verified connection to a doctoral degree or advanced research, subject to registry policies.

Technical record Source: IANA

ASCII TLD: .phd
Display TLD: .phd
Type: GENERIC
Sponsor: Charleston Road Registry Inc.

.phd domain extension

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