I have received a number of calls from this number; it only rings twice, and they have hung up.  Very annoying!!

It's an auto dialer -- hit my fax line last night, then the voice line 20 min later. Rings twice and hangs up. Called again tonight.

Carrier is a voip outfit called Iristel.

2 rings, early evenings and Saturdays.

We get a call at least once every day from this number. Rings twice only, and if one gets to the phone before the hangup, no-one answers, but the phone does not disconnect immediately; It takes about two minutes. Calling the number back, one gets a recording "Thank you for calling campaign support. We can't take your call right now but it is important. Please leave your name and your phone number including area code and we will return your call within three business days. If it is your desire to be put on our do not call list...."

Trying repeatedly gets only an answering machine.