It's some kind of insurance company.  When you call the number back all you get is a recording.  Thankfully, there is an option to have your number removed from the call list if you like.

This # called in on a line used to receive alarm signals...  Caused the alarm received to give an unknown alarm...  Pain in the butt.

Just when I thought my recent "Do Not Call" order had finally kicked in after moving, I'm getting calls from this number.  They're sure persistent:
6/23/09 5:01 p.m. Unknown Name
6/25/09 4:08 p.m. Unknown Name
6/26/09 2:25 p.m. Synergy Solutio
Plus one earlier call I didn't keep from my caller ID.
According to white pages reverse lookup it's an unpublished land line in Dallas, TX.
After doing a google there are several companies called Synergy Solutions but none with this 214 number.  One is a recruitment firm in CA and another is some sort of "expert in outsourced call center solutions" but is in AZ.  I almost thought it was the recruitment firm but I've been receiving these calls since BEFORE I got laid off ...

Synergy Solutions  214-224-0484  They have called 4 times now in the past 3 hours.....

this number came up saying unknown name but showed the number. my husband said that they were talking about us buying life insurance...my husband knows that scammers have been calling lately so he asked them" If I buy a policy what are you gonna do put a hit out on me and be the benefieciary?'' and then he asked the for the company name and the name of the ''repersentative'' he was speaking to and where they got our number and if we could be taken off their call list....my husband then told them that we were looking up his name to see if he really worked for that company and looking to see if the company was real he then HUNG UP! Some how they always do that when they are caught. So i'm gonna start jumping the gun and asking that from the get go. I'm gonna ask what's your name and your company name please hold while I look this up on my computer and verify that your a real company. and see how fast they run