I think its some type of generic number when people use a calling card. My friend (who doesn't have a cell or long distance on house phone) left a message on my voicemail following the missed calls from this number
I've recieved calls from this number on and off for months now, about one every three weeks to a month. Never leaves a message and number is always disconnected when I try to call them. I never had this problem till I changed my cell phone number with T-mobile. Within the first week I recieved the first one. The number will sometimes wait for the mail box sometimes it'll only ring once or twice.
I also have T-Mobile and guess what? This morning there was a missed call message on my cell phone from this (213)622-000 number. When I returned the call a recording said that it is a disconnected number. I then googled the number and it shows that this is a jewelry store. I also saw that this site so I am now adding my call to the list.
I too have just received a call from this number. The same is true. I attempted to return the call only to get a recording that the number was disconnected number. I also got a called ID as Petex Inc. No luck on a search under that name but as the previous post did find a jewelry store.