Local Calling Guide
Area code/prefix search
Columbia, MD
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NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
410-992
| 1 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 2 |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2011-10-28 |
|
410-992
| 3 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 4 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 5 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 6 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 7 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 8 |
ELCYMDELDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-992
| 9 |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
410-997
| A |
CLMAMDCBRP0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| A |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 0 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 1 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 2 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 3 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 4 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 5 |
CLMAMDJTBMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2013-09-05 |
|
443-259
| 6 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 7 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 8 |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 9 |
BLTMMDCHAMD |
1958 ATX TELECOMMUNICATIONS SERVICES, LTD. |
238 |
|
2003-02-25 |
|
443-276
| A |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 0 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 1 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 2 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 3 |
BLTMMDCH08Z |
4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD |
238 |
|
2003-11-08 |
|
443-276
| 4 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 5 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 6 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 7 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-276
| 8 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2004-03-29 |
|
443-276
| 9 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-283
| A |
BLTMMDCHW29 |
4716 PAETEC COMMUNICATIONS, INC. - MD |
238 |
|
|
|
443-285
| A |
CLMAMDSRRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-285
| 0 |
CLMAMDSRRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-285
| 1 |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2004-04-20 |
|
443-285
| 2 |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2004-09-29 |
|
443-285
| 3 |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2004-08-19 |
|
443-285
| 4 |
CLMAMDSRRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-285
| 5 |
CLMAMDSRRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-285
| 6 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-285
| 7 |
CLMAMDSRRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-285
| 8 |
CLMAMDSRRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-285
| 9 |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2004-09-29 |
|
443-319
| A |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-319
| 0 |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-319
| 1 |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2020-08-13 |
|
443-319
| 2 |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2016-01-08 |
|
443-319
| 3 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2008-06-16 |
|
443-319
| 4 |
PIVLMDPKFMD |
5966 LIGHTWAVE COMMUNICATIONS, LLC - MD |
238 |
|
2005-07-04 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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