Below conversation was taken from Soompi:
It's only available in the UK, so I sent them as a text, as
follows: "Who has the largest official fanclub."The reply, word for word. (I'll
try and take a picture of my mobile phone, if people don't believe
me.)"According to Guinness World Records, Asia's Top Artists group, TVXQ, known
as Cassiopeia has the biggest fanclub of an artist."It doesn't say a number, but
that is an official text service answer, that is advertised on the official page
of the Guinness Book of Records.I sent them another text (you get two free of
charge, so I figured I should use them) asking "How many members are in the
world's largest official fanclub?"Answer: (copied directly) "Cassiopeia -- the
fan club of Asian group TVXQ -- consist of over 800,000 official members."I LOVE
BEING IN THE UK!
luffa (soompi member): You will NOT find the record in the 2008 Edition. We think it is probably (and hopefully) going to be released in the 2009 Edition instead, since Cassiopeia just got notified by Guinness, and all records broken or found in 2008 are published in the 2009 Edition.
Credits: directly taken from soompi-from one of the DBSK fan in UK- quoted-& luffa of Soompi