Here in Australia they use the term "free-range" and additionally publish the number of animals per land area (density). There's some pretty vicious things being sold as "free-range". I think "cage-free" is a scam also. You want the hard numbers.
I don't know of any large producers of pasture raised eggs. They all seem to be small, regional outfits, but then again, I haven't really looked hard.
Of course free range eggs aren't totally safe either, there's been a few scandals where a company has just lied about the conditions of the chickens entirely and gotten away with it for a worrying amount of time.