NoMoRobo

I've been using this blocking service now since around December 2013. I must say generally it has been a success for me as I used to receive as many as 6 telemarketing calls in a day.
After some weeks on NMR service the calls gradually decreased, probably because NMR was hanging up on the scammers.
So over some months of usage I today probably get 2 to 5 telemarketing calls per week, and about 75% of them are blocked.
Those that aren't blocked I report to NMR.
My main criticism of NMR is that it takes them too long to block newly reported numbers...sometimes more than a week and I so I get repeated calls from that new number. My other criticism is about political calls during the recent midterm elections. I was receiving too many unblocked calls and they lasted over a two weeks (from the same number). Again too much delay in taking action on reported numbers by NMR.
but I'd say the overall level of telemarleting calls has gone way down, and the number that actually ring on my phone is very few.

Lastly ....for the 800notes folks, why is it that every time I mention NMR in a call that I report my post gets stonewalled as Waiting Moderator Approval?  Is it the mere mention of the NMR name?  I am not advertising for NMR but merely trying to inform others about them. Believe 800notes was where I first learned of NMR.

Already seeing that... Westjet is warning that some scammer in México is impersonating them. Modus operandi is robocall with caller ID spoofed to the victim's number, except for the last four digits, which are random.

'Phone spoofing' scammers disguise as local callers​
WestJet again warns customers of credit card scam

Modus operandi is a series of robocalls to Canadian residences with caller ID spoofed to be the victim's number with the last four digits changed to random numbers, message claims the called party was awarded $999 in frequent-flyer miles, press '1' to be transferred to some scammer in México who asks for a credit card number. Nothing new, a similarly-spoofed series of robocalls last year was claiming to be "Air Miles", but at least this time WestJet is speaking out:

From www.cbc.ca/news/canada/calgary/westjet-asks-c ... calls-1.2826360

WestJet asks Canadians for help dealing with scam phone calls
Airline reached out to Mexican authorities and RCMP, but calls don't stop

CBC News Calgary: Nov 06, 2014 1:21 PM MT

WestJet is asking Canadians to report persistent “valued WestJet customer” phone calls that are not actually coming from the company.

WestJet communications vice-president Richard Bartrem has had four such fraudulent calls this week alone to his home.
phone scam

WestJet staff said in a recent blog post they are listening in and trying to figure out how to make the fraudulent calls stop. (CBC)

He is asking Canadians to report the calls to the Canadian Anti-Fraud Centre and the National Do Not Call registry.

WestJet has worked with Mexican authorities, the Canadian Anti-Fraud Centre and the company that hosts websites related to the scam in an attempt try to get to the bottom of the problem — but Canadians across the country are still getting the calls.

“We are not going to try and sell you things by cold call telemarketing. So this never has been our way of doing business,” Bartrem said. “The Canadian public is remarkably frustrated and so are we.”
Calls continuing

While most people hang up, WestJet staff said in a recent blog post they are listening in and trying to figure out how to make the calls stop — going as far as keeping the telemarketers chatting to stop them from taking calls from other people.

Here is how the call works: an automated female voice urges the “valued WestJet customer” to press one, which transfers the call to someone confirming that the person is over 30 and a valued credit card holder.

“They transfer you again to someone who simply tries to sell you a vacation package in Mexico. If you inquire as to, ‘Take me back to the $999 WestJet dollars that I just won,’ they either swear at you, or hang up, or tell you it has nothing to do with them,” Bartrem said.

“WestJet is by far the lion’s share of these phone calls, but other Canadian brands are used as the hook to get you to press one.”

Spoofing makes source hard to trace

This year the calls appear to be coming from local numbers but they are actually “spoofed” — meaning software is used to mask the caller’s real identity by displaying a fake telephone number, said Bartrem.

Bartrem is urging Canadians to report the number, even if it is spoofed, along with information such as the websites related to the call.

“Hopefully it will help us, along with the authorities, to find out who these people are and how to make this stop.”

WestJet has also published the websites of the companies they allege are associated with the calls and are asking people to email those companies to let them know that they find the calls irritating.

Bartrem says he hasn’t heard of any cases of identity or credit card theft arising from the calls, but the RCMP is dealing with a handful of cases of customers trying to get their money back.

I’m not sure what your post has to do with Nomorobo?  Nomorobo is presently not available in Canada or anywhere else outside the USA.  

You should probably consider getting a call blocker that works in Canada.  I use the Pro Call Blocker in conjunction with Nomorobo.  You can buy a good call blocker here:
http://www.amazon.com/s/ref=nb_sb_ss_i_0_13?url=search-alias%3Daps&field-keywords=call+blockers&sprefix=call+blockers%2Caps%2C291

Nomorobo has been adapting their technology to deal with the tide of spoofed numbers.  Fewer and fewer are getting through now.  Telescammers will continue to find ways to circumvent the technology, but I believe it’s only temporary until Nomorobo can find ways of dealing with them.  

It’s a technology war and the telescammers are losing ground every day to call blockers and services like Nomorobo.  Too bad not more people know about these tools or can get them.

I've been using voip.ms as a call blocker. It's limited as it doesn't import from an external blacklist server, but it is able to do things like "if 800* 1800* 888* 1888* ... hangup" or put specific numbers which I've whitelisted through directly. (Presumably it could also do stupid "If you're sick of pressing buttons, press 1 now" stunts which might confuse the 'bots, but bypass calls from known numbers around that and just put them through?)

It seems odd that nomorobo won't support this as a provider, as voip.ms does have simultaneous ring (under another name, "ring groups") and are VoIP. Too Canadian for their tastes (the servers are mostly US, except for Mtl TO Vancouver London)?

Switched to ATT U-verse from regular ATT service, which I've had for years.

First ATT U-Verse installer was a boob. He failed to put  a battery in the modem and shut off one of the working phone jacks in the house. Second installer fixed these problems, but ATT wall jack is barely hanging on and crooked. Phone jack in outside utility closet just an uncovered tangle of exposed wires. Very unprofessional.

ATT did not continue my unlisted number when I switched to U-Verse from regular ATT service. Started getting robocalls as soon as I switched to U-Verse. Called ATT support, switched to unlisted number & was told it would stop robocalls. It didn't. Set phone setting online at MY ATT to reject anonymous calls. It didn't work. GOT 91 ROBOCALLS IN 3 WEEKS, according to my phone log.

Called ATT TWICE to complain about robocalls, including # 11 800 xxx xxxx and one number which just displayed as 1. ATT admitted this was a problem that they're are working on, but don't have an answer for. Tech tried this and that, including shutting everything down, sending a signal to my modem, and turning everything back on. It didn't work. They even turned on my anonymous call blocking AGAIN. Nothing worked.

Read about NOMOROB.COM here, on this site. Set it up -- no sweat. Haven't had one single robocall since. Am worried, however, that it might divert legitimate calls, esp. legit calls from 800 numbers. Will have to pick up phone before 2nd ring to prevent this from happening.

My ATT optical broadband, however, working great. Have 15 mps, whereas before I paid for 6 and only got 5.

Been trying to get Nomorobo working for about a week without success.  Carrier is Comcast.  Think I will ask for help on the Comcast forums, as this should be fairly easy.

Let us know if the following setup instructions help you: https://customer.comcast.com/help-and-support/phone/nomorobo

December 2014 update: 20% of all calls are now telescammers trying to steal our money through fraudulent goods and services schemes! One would think that this rate of attempted crime would be enough for the Telcos to finally do something to stop it, but they would rather sit back and collect the extra revenues than support their legit customers.

Nomo has cut my scam calls by 93% without my call blocker. With my call blocker enabled only the newly spoofed numbers are getting through (until I add them to my blacklist). This includes the new single digit spoofed CNUM's the scammers are using to get around Nomo (and older call blockers).  

Nomo is working on a version for cell phones to be released in 2015, it's in beta testing now. It will only be available to USA carriers initially.

Earlier many were asking why NOMOROBO is free to home phone users and businesses have to pay. Home phone users act as the "eyes and ears" for NOMOROBO allowing the system to constantly detect who is making well above average amounts of calls to numerous phone numbers over a period of time (which with a large user base could be as small as one hour). This will spot a robocaller almost instantly. Therefore the home phone user gets to ride for free, acting as the detection force and the business pays a small fee to eliminate robocallers. Sounds like a very good plan to me!

Perhaps I should have clarified.  NoMoRobo is NOT available for Verizon Wireless or Verizon Traditional Landline - only FIOS is supported.

AT&T forced us to switch from dsl to uverse but we didn't want uverse phone. After a few months we switched to ooma from the copper AT&T line after getting tired of trying to play whack a spammer. And paying too much for a phone we rarely used because it had no long distance.

We're happy with ooma. We got the Premier which is still less than half of our previous bill. In addition to their blackslists, and personal blacklists they have added NMR blacklist too. I haven't added that one yet because our phone barely rings now.

I have used call blocking software in my phone for years. Just happened onto the forum about NoMoRoBo. All very interesting and encouraging. I am truly astonished the level of tele scammer activity. You say around 20% of all telecom activity is like scam baggers. Did not realize the equipment and personnel investment was so low that so many companies could get into this business. Also suggests there are still way too many suckers out there that make this lucrative in the first place -  a sad thing.

Didjit,

   I registered my moms number with Nomorobo some time last year and it has reduced the number of calls 50% (possibly more).  But it takes about 2 or 3 weeks for it to take full effect.

Been a subscriber since it first became available and am very happy with it.  Between 75 and 80 % of all nuisance calls ring once and disconnect.  Of the ones that get through, most eventually are caught if they continue calling.  The only ones that do not seem to get caught are those that have almost no reports on the various websites like this one. There have been only two false hits that I had to report to have unblocked.  It even seems to deal with the callers that spoof my own number.  Too bad more phone companies do not offer the necessary options to enable it to be used.

One great thing is that Nomo knows the calls not to block. A prime example is when we had a blizzard and people were ordered to stay off the roads after a given time. We received a call about it that night. I think its called code red or something like that.