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Top-level domain

A top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the root zone of the name space. For all domains in lower levels, it is the last part of the domain name, that is, the last non-empty label of a fully qualified…

History & Art

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Explore the main themes, entities and connections around Top-level domain. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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History

HOSTS.TXT.arpa.gov.edu.mil
28 related topics

Historical domains

.natoNATOInternational organization.csCzechoslovakia
45 related topics

Dotless domains

DNSRecordsDigHostNslookup
33 related topics

Pseudo-domains

BITNETCSNETUUCP.bitnet.oz
14 related topics

Topics to explore

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Overview

History

Types

Internationalized country code TLDs

Infrastructure domain

Reserved domains

Historical domains

Proposed domains

Dotless domains

Pseudo-domains

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Top-level domain

Nodes168
Edges167
Triples142
Avg. degree1.99
Density0.011905
Components1

How this topic connects Entity context

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Top-level domain

Top relations

related to Types · 31
Top-level domain → Address, Arabic, ARPA, As, Chinese, Comments, Cyrillic, Generic, Greek, Hebrew, IANA, ICANN, ICANN-accredited, IDN, Infrastructure, Internationalized, Internet Engineering Task Force, ISO, It, Latin
related to External links · 14
Top-level domain → ALL-CAPS, Articles, August, CircleID, DNS Root Zone, Host Count, IANAIANA TLD List, ISC, January, New TLDs, Retrieved, Root Zone Database, TLDs, Top-Level Domain Names
related to Internationalized country code TLDs · 14
Top-level domain → An, Arabic, By May, Chinese, Domain Names System, Egypt, ICANN, IDN, Internet, May, November, Saudi Arabia, The, United Arab Emirates
related to history · 13
Top-level domain → An, Categories, Countries, DNS, Domain Name System, HOSTS, In, ISO, Multiorganizations, Originally, The, The DNS, TXT
related to Proposed domains · 12
Top-level domain → An, Around, ICANN, Internet, Later, Several, Site, The, TLD, TLDs, US, US Communications Decency Act
related to Infrastructure domain · 11
Top-level domain → ARPANET, DNS, Dynamic Delegation Discovery System, For, However, Internet, IPv4, IPv6, It, NAPTR DNS, The
related to Pseudo-domains · 10
Top-level domain → BITNET, CSNET, Domain Name System, For, Internet, Most, One, Several, SWIFTNet Mail, UUCP
related to Dotless domains · 7
Top-level domain → AAAA, DNS, Dotless, Due, For, MX DNS, TLD
related to Reserved domains · 5
Top-level domain → Internet Engineering Task Force, RFC, RFCs, The, These
see also · 3
Top-level domain → Alternative DNS, Internet, Suffix ListSecond-level

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

domains top-level domain name icann dns root internet system new tld names cctlds generic tlds country countries gtlds records iana

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
in-addr.arpa for IPv4instance ofand is used today exclusively for Internet infrastructure purposes0.80text
ip6.arpa for IPv6 reverse DNS resolutioninstance ofand is used today exclusively for Internet infrastructure purposes0.80text
uri.arpainstance ofand is used today exclusively for Internet infrastructure purposes0.80text
urn.arpa for the Dynamic Delegation Discovery Systeminstance ofand is used today exclusively for Internet infrastructure purposes0.80text
and e164.arpa for telephone number mapping based on NAPTR DNS recordsinstance ofand is used today exclusively for Internet infrastructure purposes0.80text
diginstance ofwith a tool0.80text
hostinstance ofwith a tool0.80text
or nslookupinstance ofwith a tool0.80text
foo.bar or test.devinstance ofprogrammers may have used custom local domains0.80text
which would both collide with the creation of gTLDs .bar in 2014instance ofprogrammers may have used custom local domains0.80text
.dev in 2019.While this does create apex DNS records of type Ainstance ofprogrammers may have used custom local domains0.80text
MXinstance ofprogrammers may have used custom local domains0.80text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

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    Min side: 3
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