I just received a call from this number today. The caller (a man) said he was an employment specialist, and that I had applied for a job on their site, and indicated that I was interested in furthering my career and education. I asked which site I had applied on, and he said he couldn't see "exactly" which one. Red flag right there.
He wanted to ask me some questions. I asked which company he was calling from, and he cut me off and quickly started with the questions. I interrupted him and asked again who he was with, and the call was got disconnected.
Maybe he was trying to sell me something or steal my identity.