Local Calling Guide
Area code/prefix search
NPA: 443
[Rate centres in NPA 443]
[Dial plan for NPA 443]
NXX: 581
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-581
| A |
Chase |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
|
|
443-581
| 0 |
Chase |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2021-03-04 |
|
443-581
| 1 |
Chase |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2021-03-04 |
|
443-581
| 2 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-581
| 3 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-581
| 4 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-581
| 5 |
Chase |
MD |
|
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-02-24 |
|
443-581
| 6 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-07-30 |
|
443-581
| 7 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-07-30 |
|
443-581
| 8 |
Chase |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA |
238 |
|
2019-07-06 |
|
443-581
| 9 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
Last updated: Fri, 01 Jul 2022 02:53:40 UTC
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