Website: https://www.hashnest.com/?locale=en
ANN thread: https://bitcointalksearch.org/topic/hashnest-discussion-and-support-thread-766448
As much as possible, stay away from such websites and buy the mining rig instead (this way, you'll have full control over it [in case you've got a cheap electricity rate].)
i do prefer using mining rig also, somehow online mining company will reach out of full resources and there is nothing to do to upgrade the hardware else to scam the system, then running new system with new webs.