The caller ID just displays incoming call, nothing else

You've been fortunate to not see bizarre information in your AT&T displays. It means the scammers had not begun their massing an attack to your AT&T area code and exchange at the time. Has nothing to do with Comcast or Verizon or any other phone service. Eventually the scammers will arrive and blast those sets of numbers.

My family has had an AT&T landline for decades, without caller ID, and we have gotten lots of scammy phone calls since the turn of the century, "Rachel with Cardholder Services" being one of them. Last year I converted the landline over to AT&T Uverse home phone, with same number. Now I can see the logs and I see junk information and misleading information in the CNAM and the CID fields. I often see just a "1" for a number, or not enough digits, or "private". None of these, if I happened to answer the phone, turn out to be legitimate callers. I often see junk information even though the phone never rang. There are scammers out there who call numbers to see what equipment is on the line so they can hack into the equipment.

Oh, we've gotten plenty of scam calls including the card services scam & Disney vacations etc. It's become especially noxious over the last five or so years when every crook in the country figured out that nobody was going to be prosecuted for violating Do Not Call statutes. But I've never gotten this particular kind and the coincidence of receiving them immediately after switching services to Comcast Digital Voice is telling.

This thread has gotten waaay off topic with people reporting all types of nuisance calls rather than the very particular sort that the original poster described, but someone else who did stay on topic mentioned that her "Incoming Calls"  which did not register in the CID history also rang for ten times before hanging up while all other calls to her number roll over to the answering machine after four & the same occurred here.

It does seem like this could be just some sort of digital glitch which Don suggested rather than the standard telemarketer crapola we're all being inundated with.

This is Thank You again. I meant to post the above as a reply to William. Apologies.

I'm compelled to point out an error in your post, where you say "... nobody was going to be prosecuted for violating Do Not Call statutes."

When you consider the DNC registry can't do anything about criminal callers from overseas, the following is actually quite a good track record, the reason being that legitimate telemarketers ARE following the rules and not calling numbers on the list.

From the FTC web site, re the DNC registry:
"The FTC takes aggressive legal action to make sure telemarketers abide by the Do Not Call Registry. To date, the Commission has brought 105 enforcement actions against companies and telemarketers for Do Not Call, abandoned call, robocall and Registry violations."

"Oh, we've gotten plenty of scam calls including the card services scam & Disney vacations etc. "

We were getting so many calls about Disney cruises that it was becoming a tease. We all knew it was fake. A painful reminder that we couldn't go on a cruise. So we started saving up change in our little coin jar. Every week we went to the bank and deposited the change. It was $20 to $30 sometimes more. Guess what ! Now it's added up to $3k. We are going on vacation. The scam calls were like a prophecy --- it motivated us to save and now we are going on a dream trip.
Never give up on your dreams. You can make it happen. So thrilled!

We want to go on vacation and soon.
No more scamming.
IMHO

Not all "call numbers" that look strange - not enough digits - etc are Scams.
For instance:  Best Buy
   I had ordered (online) a product and theirs came in as: 332211.   I am not sure if that is a Verizon Code or from Best Buy,  but in my case it turned out to be a real legit call.
not a scam - just a company attempting to pass along to me the latest delivery information.
Not sure HOW that Exactly works or why those digits show in there but they sometimes o exists for real reasons.
.

However if we ever receive a call and The Caller ID Shows Our OWN NUMBER...
Those are clearly 'spoofed' scam-calls..  often calls with no one on the end of the line.
However those are extremely successful spoof-scams, since when people see their own number as the Ca,ller ID Number they become curious, and often curious enough to answer the call.
Also many stare at the Caller ID - Confused - and it goes to their voice mail, Voice Mail often states the person's First and Last Name - and so now they have a 1.Verified and Working Number
                                                              as well as 2.The Name of the person who owns and/or use4s said phone.
There are many buyers for each bit of information and more when they can get The Full Name that goes With that Number.  So with that in mind, we should be a little less forthright in our cellphone V.M. Greetings...  and the only For-Sure scam-number is when your Own Number is Spoofed.  You'd think seeing your own number listed would be a HUGE Clue that it is an illegally Spoofed number - But like I mentioned our imbedded curiousity often gets the better of us and many of us pickup just to see who it could be.   This technique has been proven quitey successful for them.

Peace and Thanks to all who posted their detailed information here and on other "Who's Calling Me" type websites.
Knowledge is truly Power.

so tired and sleepy

We have been getting these calls as well, "incoming call" call on our caller id. We have our landline through our local cable company, so I logged into the phone manager on their website, which allows a customer to block calls, etc. I found an anonymous setting that blocks calls that give no normal phone number or name, which is supposed to block the call before your phone rings which would be terrific. If we don't receive these types of calls after today, I know it works. I hopes this may help some other people, as I don't know if Verizon, AT&T, or other online phones services offer this.

I answered a phone for the access number.

I have done the wonderful things I have done. And an unlimited phone answered a call from a cellphone.

I have not answered.

Are you sure?

I did not answer the phone.

I'm sure my calls are not ending now.

I am getting three or 4 calls every day that the caller ID just says "incoming call". No number, no name, no city, no useful info whatsoever. I answered one of these calls one time, thinking it might be a friend calling from a cell phone, and the caller was from some political party asking me if I was going to support their party's candidates. I now no longer answer if the caller ID is blank, lists just a city, says "incoming call", or says "toll free number". These are practically guaranteed to be "junk" calls from telemarketers or scammers/phishers, political parties, or charitable organizations asking for donations. My phone is a Vtech cordless phone. I don't know if the problem is in the phone itself, or the phone system, but even some of my friends who are specifically listed in my phone's database by name and number don't register in the Caller ID. This seems to be primarily a problem with my friends who have gone cell-only, especially with Sprint, and no longer have land line phones. Do all Sprint cell phones have caller ID somehow disabled for outgoing calls? When my friend used to have an AT&T cell phone, her name would show on my VTech phone display screen. The moment she switched to Sprint, even though her number did not change, the caller ID now displays only "wireless caller", which is useless info. I asked her if she specifically told the Sprint salesman who sold her her I-phone and set up her service to block her Caller ID, or if she programmed her phone somehow to block her caller ID, and she said NO, and NO. So Sprint is blocking her caller ID even though she didn't request this be done. The whole caller ID system has become virtually useless, since it seems like even people who you know, and who you WANT to talk to, don't show an actual, recognizable caller ID on your phone when they call you.