As of 10/13/2015, no live official trademarks were found on USPTO.gov for the exact term/number
Also embedded in this domain:
948 = Wealthy for nine lifetimes.
9 = symbolizes endurance and longevity.
As an ordinary 7-number domain, this number may mean little to average Occidentals (other than as an easy-to-remember cool pattern); heck, we don't fully understand the premise, either. However...
In the Chinese market, "8" is the luckiest number; "9" symbolizes endurance and longevity.
It is no accident that "9" is the centerpiece in this domain, bringing together all the positive long-lasting aspects that this domain has to offer.
Disclosure: In Chinese culture, the stand-alone "4" is generally considered an unlucky number because it sounds like "death."
A Western comparison: the number 13, also a harbinger of death, is considered to be an unlucky number, but, at least once a year, Westerners celebrate unlucky 13 by dressing up as ghosts, skeletons, and other scary creatures, such as Justin Bieber and Miley Cyrus.
Also, there are some instances where 4 can be part of a lucky combination, as in the case of 248, 348, 648, 748, 848, and 948.
Indeed, according to the website Travel China Guide, in China’s long history, the number 4 has been widely used and accepted as a number to represent common patterns in nature, architecture, literature, important inventions of ancient and modern China, and more.
Click and scroll to "Wide Use of No. 4" for some positive examples.
The double lucky "8's" surrounding the pattern of 494 may very well counteract the general negativity of this number, perhaps not.
But we'll have to allow potential buyers to arrive at their own conclusions.
This domain is also a palindrome, which means the numbers are the same when read backwards, thus adding another level of mystique to the numerical pattern.
We cannot even fathom what 8.com, 88.com, 888.com, and 8888.com are worth -- probably much more than the average investor could afford.
Long repeating 8's are prized as well. In fact, 5, 6, 7, 8, 9, and even 10+ repeating 8's are commanding excellent prices these days.
Evidently, every possible string of 8's have been registered in .com, all the way up to the longest one.
Finally, repeating 8's with other lucky numerals are becoming rare as hand registrations (fresh from the registrar) and are also highly prized.
Chinese demand for numerals is HUGE and increasing each day.
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