Local Calling Guide
Area code/prefix search
NPA: 520
[Rate centres in NPA 520]
[Dial plan for NPA 520]
NXX: 344
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 520-344
| A |
Tucson |
AZ |
TCSMAZCH1MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
668 |
|
|
|
| 520-344
| 0 |
Tucson |
AZ |
|
3285 LEVEL 3 COMMUNICATIONS, LLC - AZ |
668 |
|
2007-11-06 |
|
| 520-344
| 1 |
Tucson |
AZ |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
668 |
|
2008-03-24 |
|
| 520-344
| 2 |
Tucson |
AZ |
|
587F BANDWIDTH.COM CLEC, LLC - AZ |
668 |
|
2009-11-20 |
|
| 520-344
| 3 |
Tucson |
AZ |
|
587F BANDWIDTH.COM CLEC, LLC - AZ |
668 |
|
2009-11-20 |
|
| 520-344
| 4 |
Tucson |
AZ |
|
587F BANDWIDTH.COM CLEC, LLC - AZ |
668 |
|
2009-11-20 |
|
| 520-344
| 5 |
Tucson |
AZ |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
668 |
|
2009-11-29 |
|
| 520-344
| 6 |
Tucson |
AZ |
|
7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ |
668 |
|
2008-04-05 |
|
| 520-344
| 7 |
Tucson |
AZ |
|
318J COMCAST IP PHONE, LLC |
668 |
|
2007-12-10 |
|
| 520-344
| 8 |
Tucson |
AZ |
|
318J COMCAST IP PHONE, LLC |
668 |
|
2007-12-10 |
|
| 520-344
| 9 |
Tucson |
AZ |
|
318J COMCAST IP PHONE, LLC |
668 |
|
2008-02-25 |
|
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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