Re: Where is area code 390? [Telecom]

Would the phoneco's Call Trace (1157) yield any better information?

At least they've settled on a specific fake caller ID number, then...

I can't find any official listing of area code 390, but I did find this:

led me to think it might be a new one.

Don't worry, we have ways of making them tell us who they are, if they call back...

***** Moderator's Note *****

The number given on that web site goes to the intercept operator here, so it's a typo. A Google search for "Area Code 390" turned up over

2,000 hits, but the first page was all about telemarketers, so it's likely that this is a well-known problem.

What I'd like to know is 'How are they spoofing the CID'? If they're simply resending CID data after the call is answered, I'm not sure what could be done about that. OTOH, if they're using PRI lines and misreporting to the IEC, then that's probably actionable.

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If they call back, I may try it.

A while back I got a call with my own number as the CID, it was a telemarketer, I have no idea how they did it other then they were behind a system that allowed setting the number to what was supposed to be the primary number, I told them I was on the DNC list and not call me again, nothing since.

Vatican, even though I don't remember seeing the Vatican with its own country code.

With luck the call trace will use the ANI, I was never on the maintenance end and can't remember how it worked.

Nope. All N9X area codes are reserved for the transition to longer numbers. There is no A/C 390 and never will be.

All landline numbers in Italy start with +390. The Vatican has regular Rome numbers which start with +3906.

R's, John

I have no idea how it's done, but there was an article (sorry, I forgot where) about an 800 service that would spoof the caller-ID "as a joke".

I always thought caller-ID came out of the ANI, but apparently not. I have no idea of where it comes from or how it is transmitted. Maybe someone could explain it in layman's terms.

[Historically, the Bell System was slow in adopting in ANI. Originally DDD didn't have it. Though crude ANI was developed for suburban toll calls in the 1940s, as late as 1972 a big city downtown Centrex was still using ONI (operator requested calling number), even for suburban message unit calls. I'm not sure if No. 5 crossbar was initially designed with ANI or not. ]

I'm suprised it worked. That company is already in violation of FTC regulations. FTC regs require them to provide their own phone number on caller-ID. Ref:

I respectfully suggest that being in violation of FTC regulations means nothing.

Recently I spoke to a friend who was bothered by a telemarketer who violated numerous FTC regulations (like calling outside the designated time frame, disregarding do not call, etc.) My friend duly logged the calls and made a formal complaint.

Nothing was done.

As mentioned earlier, it really appears the telephone company and regulatory authorities take no action unless there is a high volume of complaints. (They don't deal with Call Trace until there is a volume of calls of a violent threat). When cases make the newspaper of a telemarketer fined for violating the rules, the violations were in the _thousands_ of calls.

Is anyone aware and can describe where a single complaint by an individual got action?

If the caller is behind a private telephone switch, some switches include user-programmable Caller ID. If it were ANI, the line number of the outgoing trunk would show up in the display of the called party.

If the caller's extension can be reached as direct inward dial and the switch is programmed to display the extension as a dialable 10-digit telephone number on outbound calls, then user-programmable Caller ID can be used to give useful information. If one is trying to return a call, knowing the outbound trunk he used isn't helpful.

Sometimes user-programmable Caller ID has a benign purpose.

CLID is supposed to be completely separate from ANI, and is transported as part of SS#7 messages. ANI is for billing, CLID is for who's calling.

In a PBX, the ANI can always be the main number since that's where the calls are billed, while the CLID should identify the extension.

R's, John

That doesn't sound correct since ANI shouldn't originate at a PBX. ANI should be the outgoing trunk. If ANI could originate at the PBX, if the subscriber screwed with it the telephone company wouldn't be able to bill properly.

Please don't Cc me.

We have DID lines in my office but all outbound calls present the main number as their CLID data. Works for me because I just give out my DID number anyhow.