<div dir="auto">In theory yes. There are some countries where you are not allowed to block your callerID. For the most part when you block your callerID your carrier will still pass or just a header saying your callerID should not be displayed. In cases where the caller sends no callerID at all most carriers will have a default number they use since most tier1 carriers won't take a call with no callerID at all.<div dir="auto"><br></div><div dir="auto">Now if things weren't confusing enough there are several "areas" where these is different pricing based on the callerID. The EEA recently (a few years ago) mandated that carriers charge lower rates for inter EEA calls. The carriers didn't like this and raised the rates where the callerID is not with in the EEA. This is causing a lot of shady routes that will set your blocked call or American callerID with local callerID to save money. South Africa is another example where the rates went up by 10x if the call is not originating in South Africa. The same with Switzerland. Since they aren't in the EEA and they are in Europe they saw a spike in their call costs. To offset that some Swiss carriers are chatting a lot more where the call has an EEA based callerID.</div><div dir="auto"><br></div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Jan 17, 2019, 04:41 Olivier <<a href="mailto:oza.4h07@gmail.com">oza.4h07@gmail.com</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hello,</div><div><br></div><div>These questions crossed my mind this morning :</div><div>In general, are anonymous international calls allowed (ie calling from one country to a number in an other country while hiding your own caller id) ?</div><div>Are there special rules in Europe for this ?</div><div><br></div><div>Best regards<br></div><div><br></div></div>
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