Local Calling Guide
Area code/prefix search
NPA: 443
[Rate centres in NPA 443]
[Dial plan for NPA 443]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 443-489
| 6 |
Chase |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-02-13 |
|
| 443-489
| 7 |
Chase |
MD |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-25 |
|
| 443-489
| 8 |
Chase |
MD |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
| 443-489
| 9 |
Chase |
MD |
|
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
| 443-490
| A |
Edgewood |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
|
|
| 443-490
| 1 |
Edgewood |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2025-05-07 |
|
| 443-490
| 2 |
Edgewood |
MD |
|
5562 METROPCS, INC. |
238 |
|
2016-07-28 |
|
| 443-490
| 3 |
Edgewood |
MD |
|
5562 METROPCS, INC. |
238 |
|
2016-08-04 |
|
| 443-490
| 5 |
Edgewood |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2020-11-30 |
|
| 443-490
| 6 |
Edgewood |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2017-10-19 |
|
| 443-490
| 7 |
Edgewood |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2017-10-19 |
|
| 443-490
| 8 |
Edgewood |
MD |
|
964H BARR TELL USA, INC. |
238 |
|
2016-12-17 |
|
| 443-490
| 9 |
Edgewood |
MD |
|
5562 METROPCS, INC. |
238 |
|
2017-10-14 |
|
| 443-491
| A |
Parkton |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
|
|
| 443-491
| 2 |
Parkton |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2005-10-07 |
|
| 443-491
| 3 |
Parkton |
MD |
|
318J COMCAST IP PHONE, LLC |
238 |
|
2005-03-10 |
|
| 443-491
| 7 |
Parkton |
MD |
|
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2020-09-04 |
|
| 443-491
| 8 |
Parkton |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-11-18 |
|
| 443-491
| 9 |
Parkton |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2012-10-07 |
|
| 443-492
| A |
Elkridge |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
| 443-492
| 0 |
Elkridge |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2024-10-12 |
|
| 443-492
| 2 |
Elkridge |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2008-02-12 |
|
| 443-492
| 3 |
Elkridge |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2008-02-12 |
|
| 443-492
| 5 |
Elkridge |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
| 443-492
| 6 |
Elkridge |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2008-08-01 |
|
| 443-492
| 7 |
Elkridge |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2023-04-29 |
|
| 443-492
| 8 |
Elkridge |
MD |
|
5562 METROPCS, INC. |
238 |
|
2011-03-15 |
|
| 443-492
| 9 |
Elkridge |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
| 443-493
| A |
Delmar |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
|
|
| 443-493
| 0 |
Delmar |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2009-05-07 |
|
| 443-493
| 1 |
Delmar |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2011-10-28 |
|
| 443-493
| 2 |
Delmar |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2011-10-28 |
|
| 443-493
| 3 |
Delmar |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2011-10-28 |
|
| 443-493
| 4 |
Delmar |
MD |
|
145J TERRA NOVA TELECOM INC. |
242 |
|
2024-02-15 |
|
| 443-493
| 5 |
Delmar |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
| 443-493
| 6 |
Delmar |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2024-02-18 |
|
| 443-493
| 7 |
Delmar |
MD |
|
876D ONVOY, LLC - MD |
242 |
|
2017-04-13 |
|
| 443-493
| 8 |
Delmar |
MD |
|
876D ONVOY, LLC - MD |
242 |
|
2021-04-02 |
|
| 443-493
| 9 |
Delmar |
MD |
|
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
| 443-494
| A |
Millersville |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
|
|
| 443-494
| 2 |
Millersville |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2012-10-07 |
|
| 443-494
| 3 |
Millersville |
MD |
|
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2008-10-01 |
|
| 443-494
| 4 |
Millersville |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2025-10-06 |
|
| 443-494
| 5 |
Millersville |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2021-04-02 |
|
| 443-494
| 6 |
Millersville |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-07-06 |
|
| 443-494
| 7 |
Millersville |
MD |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-12 |
|
| 443-494
| 8 |
Millersville |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-02-22 |
|
| 443-494
| 9 |
Millersville |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
| 443-495
| A |
Parkville |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
|
|
| 443-495
| 1 |
Parkville |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2025-07-25 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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