Single-letter second-level domain

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Single-letter second-level domains are domain names in which the second-level domain consists of only one letter, such as In 1993, the Internet Assigned Numbers Authority (IANA) explicitly reserved all single-letter and single-digit second-level domain names in the top-level domains com, net, and org, and grandfathered those that had already been assigned. In December 2005, ICANN considered auctioning these domains.

Active single-letter domains[edit]

On December 1, 1993, the Internet Assigned Numbers Authority (IANA) explicitly reserved the remaining single-letter and single-digit domain names. The few domains that were already assigned were grandfathered in and continued to exist.[1][better source needed]

The assigned domains in this group are the following:

Domain 1993 Owner Current Owner INet Solutions Ltd Future Media Architects JG CenturyLink Privately owned Q Networks Weinstein & DePaolis X.Commerce/PayPal The Open Group X.Org Foundation GMO Internet, Inc.

Some other single-letter domain names are also in use.

Domain Current User Usage WordPress Redirects to [2], has some assets for [3] (under (see for example [4]). PayPal Stands for X.commerce, an eBay company. Currently redirects to In the past it has forwarded to PayPal and as well as the X.commerce website.

Many other single-letter second-level domains have been registered under country code top-level domains. The list of Country code top-level domains which have been identified to allow single-letter domains are : .ac .af .ag .ai .am .asia .biz .bo .by .bz .cm .cn .co .cr .cz .cx .dj .de .dk .fm .gd .gg .gl .gp .gs .gt .gy .hn .ht .im .io .je .kg .ki .kw .la .lb .lc .ly .md .mg .mk .mp .ms .mw .mx .mu .nf .nz .pe .ph .pk .pl .pn .pw .ro .sh .st .tc .tl .tt .to .tv .travel .ua .ws .vc .vg .vn and .vu.[2]

Single-character non-ASCII second-level domains also exist (e.g. ☺.com), but these are actually registered as their Punycode translations (which are more than a single character) for DNS purposes.

New single-letter .org domains being awarded[edit]

New sets of domains currently being awarded by Project 94, an organization created to distribute reserved 1 and 2 letter .org domain names, include, which is currently forwarding to

Awarded names:

Names they are looking to distribute:

Letters Numbers

Two-letter domain names[edit]

Two-letter .com domain names were never reserved. It was possible for anyone to register them in the very early years of the Internet (from 1985 to 1998). The first company to own an active Two Letter Domain is Hewlett-Packard. Since 1998 all permutations of the 26 × 26 = 676 .com domains have been registered and (barring the very unlikely event of a lapse in registration) they can only be obtained by buying them from the previous owner. In 1997 American Airlines was the first company to buy a two-letter domain on the secondary market, followed in 1998 by Hennes & Mauritz and Deutsche Bank[3]

Notable examples of two letter .com domains used by large corporations

Some two letter .com domains are also used as national country codes which are promoted through the private London Based Domain registration company CentralNic:

  • (websites in relation to Argentina)
  • (websites in relation to Brazil)
  • (websites in relation to China)
  • (websites in relation to Europe)
  • (websites in relation to Greece)
  • (websites in relation to Hungary)
  • (websites in relation to Korea)
  • (websites in relation to Norway)
  • (websites in relation to Russia)
  • (websites in relation to Saudi Arabia)
  • (websites in relation to Sweden)
  • (websites in relation to the United Kingdom)
  • (websites in relation to Uruguay)
  • (websites in relation to South Africa)

Most of these domains were registered by CentralNic between 1996 and 1998 at a time they were available for registration to anyone; some, like (already registered in 1994) were acquired later.

There are also 26 × 10 x 2 = 520 less prominent .com two letter domains with a combination of letters and numbers:

Two-letter domains with other extensions are less prominent but they are also used by notable companies and organizations:

In most TLDs such as .fr, .info, two-letter domains are not available.

Market value of single- or two-letter domains[edit]

Only three of the 26 possible single-letter domains have ever been registered in the .com domain extension, all before 1992. The other 23 single-letter .com domains were registered January 1, 1992 by Jon Postel, with the intention to avoid a single company commercially controlling a letter of the Alphabet. Many but not all .com two-letter domains are among the most valuable domains.

While it is widely believed that the domains and have been the most valuable domain transactions, prominent two-letter domains have only been sold after nondisclosed transactions handled by specialized broker and law firms.

The value of the LG Corp (the South Korean electronics conglomerate formerly known as Lucky Goldstar) purchase of was never published. LG Group missed the first sale of the domain in 2008 from the original owner the chemical company Lockwood Greene to the .com entrepreneur Andy Booth, who currently runs Booth had used it to launch a footballing website known as LifeGames. LG Corp bought "" one year later, in 2009, for a significant[tone] amount. Following the purchase, LG Group changed worldwide marketing to, which is now their central internet address for all countries. All national LG Country domains like "" or "" redirect to "".[clarify][citation needed]

The value of the initially secret November 2010 Facebook purchase of was revealed two months later to be $8.5 million in cash and rest in stocks.[4]

IG Group paid $4.7 million in September 2013 to buy [5]

GMO Internet Inc. buys for nearly 6.8 Million from Nissan, who previously used it for the Nissan Z series cars.[6]


With the 2005 announcement that registration of the remaining single-letter names might become available, some companies have attempted to establish a right to the names by claiming to own trademark rights over single letters used in such a context. U magazine, a college oriented publication, had gone so far as to re-brand its website as "" (with a ® sign) in online logos and captions—even though it does not operate a web site at that URL. They sent a letter to ICANN attempting to gain priority for registration of this name.[7] Other companies actually use their trademarks in commerce.


  1. ^ Bill Manning; Eric Brunner; Donald Eastlake (March 2000). I-D draft-ietf-dnsind-iana-dns-01. IETF. p. 15. 
  2. ^ Hofman Laursen, Christopher [1], The World's Shortest Domain Names: How To Get a One Character Domain, Copenhagen, 01 December 2014. Retrieved on 04 December 2014.
  3. ^ Two Letter .coms Activation Timeline
  4. ^ Transaction of the domain
  5. ^ " sells for $4.7 Million". 
  6. ^ Michael Berkens. " Sold For $6.8 Million Dollars". 
  7. ^ " letter" (PDF). 

External links[edit]