Local Calling Guide
Area code/prefix search
NPA: 443
[Rate centres in NPA 443]
[Dial plan for NPA 443]
NXX: 284
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-284
| A |
Waterloo |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
|
|
443-284
| 0 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-23 |
|
443-284
| 1 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-23 |
|
443-284
| 2 |
Waterloo |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-05-02 |
|
443-284
| 3 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-284
| 4 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-284
| 5 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-284
| 6 |
Waterloo |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-05-02 |
|
443-284
| 7 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-23 |
|
443-284
| 8 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-23 |
|
443-284
| 9 |
Waterloo |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-23 |
|
Last updated: Fri, 13 May 2022 22:16:13 UTC
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