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521 Area Code - Location, Time Zone. Toll Free? Scam? Who's Calling?

State Unassigned
Timezone Unassigned
Is Area Code 521 Toll Free? No
Major Cities Unassigned

Did you receive a call with a new code number? Calls from any new code number can be really alarming. Who is calling? Where is the call coming from? Is the call that important for me to answer? Is the call linked with a scammer? These are just one of the few most commonly asked questions about new area codes. Wanna know more? Below are some information that might help to further your understanding about area code 521.

What is area code 521 and where is it coming from?

Area code 521 has been assigned as used for Personal Communication Services. It has not been assigned to a geographic area by the North American Numbering Plan Administration. The said area code was implemented on September 21, 2017.

Since area code 521 is assigned for personal communication services, the telephone area code could be used across North America.

Are calls coming from area code 521 a scam?

Since there is a large number of three digit numbers are being used already, scammers could also be using one. The calls could look like they are coming from somewhere in the U.S state, when in fact, it is not. If you answer their call, there will be a chance that you will be charged with a fee just by connecting to the call. Scammers also uses the trick "One Ring Scam" in which they ring your phone once, so you will be curious and would call them back.

If you receive a call from an unfamiliar number, do not answer or call them back. Instead, you can search on the internet to see where the phone number is registered and where is it coming from or you can block them from your mobile device. You can also file a complaint with the Federal Trade Commission and Federal Communications Commissions, if you happen to keep on receiving calls from them.

How do I block 521 calls from my mobile phone?

Here's a quick guide on how to block a caller from your phone:


  • Go to your recent call logs
  • Find the number that you want to block and click "details"
  • For the last step, click "block number"


  • Go to your recent calls and find the number you want to block
  • Click the "i" with a circle around it next to the number
  • Scroll down to see "block this caller" and tap it

Is area code 521 toll free?

Area code 521 is not toll free. Since it is utilized for personal communication services, it provides advanced cellular mobile or paging services. Calls from a normal phone carrier is not authorize by the system since it is not assigned to a geographic area by the NANPA.


To avoid getting scammed, it is important to know the origin of the area code shown in the call. Always make sure that you do not answer the call, call back, or give any personal information.



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