The 855 prefix is the country code for Cambodia, so be careful to check whether it is a toll free number or a call from Cambodia. Like all other toll-free numbers, it is a non-geographic area code meaning it doesn't belong to any particular state.
Most area codes are tied to a specific city. Area code 855, however, is different. Rather than being tied to a specific city, 855 is a toll-free area code that can be used by callers anywhere in the United States, Canada and several other countries and territories.
Unless you know that a call is legitimate, it's best to avoid calls from the following international area codes with a +1-country code:
May 14, 2021
If you see "Suspected spam caller" or "Spam" as the caller ID, the call might be spam. You can answer the call, or block and report the number. If a call from someone you know is marked as spam, you can report the mistake.
If you answer the call, your number is considered 'good' by the scammers, even if you don't necessarily fall for the scam. They will try again because they know someone on the other side is a potential victim of fraud. The less you answer, the fewer robocalls you will receive.
Call tracing: How to trace a phone number
Malicious caller identification, activated by Vertical service code Star codes *57, is an upcharge fee subscription service offered by telephone company providers which, when dialed immediately after a malicious call, records meta-data for police follow-up.
To trace a UK mobile or landline telephone number, start by dialing 1471 to get the number of the last person that called you if you don't already have the number. Once you know the number, try typing it into a search engine, which might display the phone number's source if it's a public company or organization.
What to Know
Jan 6, 2022
*#21# tells you the status of your unconditional (all calls) call forwarding feature. Basically, if your cell phone rings when someone calls you — this code will return no information to you (or tell you that call forwarding is off). That's it.
“Private number” just means the caller ID is blocked. Anyone can do this. People who call and threaten you from a private number are scammers, trying to trick the gullible into giving up money. They often say they are police or government.
While users of TrapCall love the features, some dissident voices claim it's dangerous. Domestic Abuse advocates, especially, have cried foul. They claim that TrapCall takes away anonymity options that can protect victims who must contact their abusers for any reason (e.g. child custody and visitation).
I was searching for something on the lines of Trapcall, a new service has launched in the UK - Ambushcall. They are also working on implementing a landline solution, which will make it really useful.
In case of an Android Phone, open the Phone > tap on More (or 3-dot icon) > Settings in the drop-down menu. On the pop-up, tap on Hide Number > Cancel to come out of the Caller ID Menu. After hiding Caller ID, make a call to the person that has blocked your number and you should be able to reach the person.
When you block a contact over Android or iPhone, they will still be able to send you text messages. These messages will not show up on your phone but the sender will see the messages as sent. They won't know that they've been blocked.