Area code 551 — who called you?
Numbers starting with 551 are assigned to New Jersey (Bergen County and Hudson County). Paste the full number below to see the caller's name, carrier and community spam reports — free and anonymous.
Area code 551 at a glance
- Area code
- 551
- Region
- New Jersey
- Country
- United States
- Dial format
- +1 551 XXX XXXX
Assignment data from the North American Numbering Plan Administration (NANPA).
Got a call from 551? Here's what it means.
The three digits after the +1 country code identify the numbering plan area a number was issued in. For 551, that area is New Jersey (Bergen County and Hudson County). If you don't know anyone there, the call is more likely to be a business, a call centre or an automated dialer than a personal contact.
An area code alone can't tell you who is calling. Numbers are portable, and VoIP providers can issue a 551 number to a caller located anywhere in the world — a technique known as neighbour spoofing, where a familiar area code is used to make a call look local.
To identify the caller, run the full 10-digit number through a lookup. WhoCallsMe checks the number against carrier records, business directories and community spam reports, and shows the line type, carrier and reported risk.