From middle east:

He called my number, when it was nowhere online an unpublised, and still knew my name and job title. Said he was from another country and wanted me to work for him. Knew my name even. This is disturbing. How someone can stop someone like this man him from trailing their phone, in case a person like this is dangerous. Steps below may help. I did it after I got this call:
1. as soon as you get a call that is weird, if your phone has the option to turn off the transmitters, do this immediately in case the individual is trying to trail you.
2. always go on reverse number searches and see if your cell phone number ris trailable to your address. If it is, pay the small fee and opt it out. Also, make sure your cell number is unpublished with your phone company. And, put in all alias information in your cell phone account, in case your cell phone records are used on these reverse phone lookups, evfen if you pay for opt outs.
3. After you get one of these calls from 817, another country and often the middle east, and your phone does not have the option to turn off the transmitters, turn off the phone, and take out the battery. Change your phone number online, preferably, so you don't have to  turn back on your phone to do it.
4. Next, set your phone to disable any international calling unless you must have this enabled for reasons that you call internationally for busines or whatever.

Just fyi 817 is a Dallas/Fort Worth area code

I receive a call from this number almost every day.
The 817 area code is the Fort Worth area, specifically the N. Richland
Hills area which is a sub of Fort Worth.
The caller ID said it was 1st Class and something.
The only connection I can find is in Richland Hills..First Class Pest Control.
Not sure where you all live but the actual phone number for this company if indeed it is them is (817) 577-2844.

I bet you this number is from the middle east. set your phone not to take international calls. I meant to post only one of my guides below, but there are 4 of them, too many of course, but in each of them, it gives good advice.

I wouldn't trust these 817 numbers. I have a really bad feeling about these. don't call them back in case a call back could get your cell phone traced. It works to be paranoid about these numbers, truly. sometimes paranoia will save your butt.

Suspicious caller from middle east who knew my name. Probably a name and phone number mix up, but just in case, I took precautions. Here is a step by step guide for when you feel the caller has an alterior motive as to why they called and you don't trust their motives. Listen to your gutt.

1. as soon as you get a call that is weird, if your phone has the option to turn off the transmitters, do this immediately in case the individual is trying to trail you.
2. always go on reverse number searches and see if your cell phone number ris trailable to your address. If it is, pay the small fee and opt it out. Also, make sure your cell number is unpublished with your phone company. And, put in all alias information in your cell phone account, in case your cell phone records are used on these reverse phone lookups, evfen if you pay for opt outs.
3. After you get one of these calls from 817, another country and often the middle east, and your phone does not have the option to turn off the transmitters, turn off the phone, and take out the battery. Change your phone number online, preferably, so you don't have to  turn back on your phone to do it.
4. Next, set your phone to disable any international calling unless you must have this enabled for reasons that you call internationally for busines or whatever.

From middle east:

He called my number, when it was nowhere online and unpublished after I opted it out months ago online. This was a  middle eastern male I didn't know, and I don't know how he got my number. Below is step by step guide on how someone can stop someone like this man from trailing their phone, in case a person like this is dangerous. Steps below may help. I did it after I got this call:
1. as soon as you get a call that is weird, if your phone has the option to turn off the transmitters, do this immediately in case the individual is trying to trail you.
2. always go on reverse number searches and see if your cell phone number ris trailable to your address. If it is, pay the small fee and opt it out. Also, make sure your cell number is unpublished with your phone company. And, put in all alias information in your cell phone account, in case your cell phone records are used on these reverse phone lookups, evfen if you pay for opt outs.
3. After you get one of these calls from 817, another country and often the middle east, and your phone does not have the option to turn off the transmitters, turn off the phone, and take out the battery. Change your phone number online, preferably, so you don't have to  turn back on your phone to do it.
4. Next, set your phone to disable any international calling unless you must have this enabled for reasons that you call internationally for busines or whatever.

we're getting these too.

Caller ID said 1stclass&rkm. No Idea who that is. They call all day long. I tried calling the number but it only rings about 200 times and quits.