Phone Prefix
(605) 644-XXXX
SD • SPEARFISH
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Carrier Information
NANPA
State
SD
Region
WE
Rate Center
SPEARFISH
Assigned To
QWEST CORPORATION
OCN
9631
Status
RT
Number Range
First Number
(605) 644-0000
Last Number
(605) 644-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
5 reports
5
Total FCC + FTC DNC complaints for numbers in this prefix
Top 5 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (605) 644-1921 6056441921 | 1 |
| 2 | (605) 644-4242 6056444242 | 1 |
| 3 | (605) 644-5859 6056445859 | 1 |
| 4 | (605) 644-5937 6056445937 | 1 |
| 5 | (605) 644-7872 6056447872 | 1 |
About This Prefix
Phone numbers starting with (605) 644 are part of the North American Numbering Plan (NANP). The first three digits (605) represent the Area Code (NPA), and the next three digits (644) represent the Central Office Code (NXX) or exchange.
- NPA (605) - Numbering Plan Area, identifies the geographic region
- NXX (644) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)