TLD Types & Classification
How top-level domains are categorized: gTLDs, ccTLDs, sTLDs, and the new gTLD program.
TLD (Tên miền cấp cao nhất)
The last segment of a domain name (e.g., .com, .org, .uk).
gTLD (Tên miền cấp cao nhất chung)
Top-level domain with 3+ characters not tied to a specific country.
ccTLD (Tên miền cấp cao nhất mã quốc gia)
Two-letter TLD assigned to a specific country or territory.
gTLD mới (Tên miền cấp cao nhất chung mới)
Generic top-level domains introduced through ICANN's 2012+ New gTLD Program.
TLD kế thừa (Legacy TLD)
Original gTLDs (.com, .net, .org) that predate the New gTLD Program.
sTLD (Tên miền cấp cao nhất được tài trợ)
Specialized TLD with eligibility requirements, managed by a sponsoring organization.
TLD thương hiệu (.brand)
New gTLD using a company's brand name, operated exclusively by that company.
TLD địa lý (GeoTLD)
New gTLD representing a geographic region (city, state, or territory).
IDN TLD (Tên miền cấp cao nhất tên miền quốc tế hóa)
TLD written in non-Latin scripts (Arabic, Chinese, Cyrillic, etc.).
SLD (Tên miền cấp hai)
The part of a domain name directly left of the TLD (e.g., 'example' in example.com).
FQDN (Tên miền đủ điều kiện hoàn toàn)
Complete domain name with all labels from host to TLD (e.g., www.example.com.).
TLD bị hạn chế
TLD that limits registration to eligible organizations or individuals.
TLD hạ tầng (.arpa)
Special-purpose TLD (.arpa) reserved exclusively for DNS infrastructure and protocol use.
TLD kiểm tra dành riêng
IANA-reserved TLDs (.test, .example, .invalid, .localhost) guaranteed never to resolve in the public DNS.
Nhà vận hành TLD (nhà vận hành registry)
Entity authorized by ICANN to administer all domain registrations within a specific TLD.
TLD được ủy quyền
TLD formally added to the DNS root zone by IANA and resolvable on the public internet.
TLD ASCII
TLD composed entirely of ASCII characters, natively compatible with all DNS software without encoding.
TLD mở
TLD with unrestricted registration policies open to any person or entity worldwide.
TLD cộng đồng
TLD designed to serve a specific community of interest with eligibility restrictions and community-aligned policies.
TLD tổng quát hạn chế
Legacy gTLDs (.biz, .name, .pro) intended for specific uses but with limited enforcement of registration restrictions.
Chuỗi TLD
The proposed character sequence for a new TLD, evaluated by ICANN for similarity, geography, and conflicts.
TLD thương hiệu (.brand)
Company-operated new gTLD using a brand name as the extension, unavailable for public registration.