Phone Prefix
(564) 777-XXXX
WA • CASTLEROCK
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Carrier Information
NANPA
State
WA
Region
WE
Rate Center
CASTLEROCK
Assigned To
TELNYX LLC
OCN
073H
Status
AS
Date Assigned
Aug 04, 2022
Number Range
First Number
(564) 777-0000
Last Number
(564) 777-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
19 reports
19
Total FCC + FTC DNC complaints for numbers in this prefix
Top 17 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (564) 777-5556 5647775556 | 2 |
| 2 | (564) 777-5579 5647775579 | 2 |
| 3 | (564) 777-0314 5647770314 | 1 |
| 4 | (564) 777-0369 5647770369 | 1 |
| 5 | (564) 777-0745 5647770745 | 1 |
| 6 | (564) 777-0894 5647770894 | 1 |
| 7 | (564) 777-1090 5647771090 | 1 |
| 8 | (564) 777-1977 5647771977 | 1 |
| 9 | (564) 777-5070 5647775070 | 1 |
| 10 | (564) 777-5963 5647775963 | 1 |
| 11 | (564) 777-5979 5647775979 | 1 |
| 12 | (564) 777-6192 5647776192 | 1 |
| 13 | (564) 777-6237 5647776237 | 1 |
| 14 | (564) 777-6324 5647776324 | 1 |
| 15 | (564) 777-0165 5647770165 | 1 |
| 16 | (564) 777-6586 5647776586 | 1 |
| 17 | (564) 777-0168 5647770168 | 1 |
About This Prefix
Phone numbers starting with (564) 777 are part of the North American Numbering Plan (NANP). The first three digits (564) represent the Area Code (NPA), and the next three digits (777) represent the Central Office Code (NXX) or exchange.
- NPA (564) - Numbering Plan Area, identifies the geographic region
- NXX (777) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)