Wikipedia has 1.93 mil. Not the most, but a lot.

2.56 mil from msn.com

amazon 2.88 mil

bbc.co.uk : 1,130,000
sina.com.cn : 2,290,000
livejournal.com: 2,200,000
blogspot.com: 1,380,000

you can also see how many pages are indexed based on top level domain

site:.com
148,000,000

site:.de
72,100,000

Medium-sized:

site:dmoz.org : 788,000
site:w3.org: 471,000
site:ibm.com : 751,000