Local Calling Guide
Area code/prefix search
Frederick, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-439
| 6 |
FRDRMDFRXMD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2010-05-09 |
|
| 240-439
| 7 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2010-09-02 |
|
| 240-439
| 8 |
FRDRMDFRXMD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2009-08-13 |
|
| 240-439
| 9 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2008-10-03 |
|
| 240-440
| A |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
|
|
| 240-440
| 0 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2009-05-19 |
|
| 240-440
| 1 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2009-05-19 |
|
| 240-440
| 2 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2009-06-09 |
|
| 240-440
| 3 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2010-07-06 |
|
| 240-440
| 4 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2010-12-23 |
|
| 240-440
| 5 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2011-10-11 |
|
| 240-440
| 6 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2011-10-11 |
|
| 240-440
| 7 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2011-03-17 |
|
| 240-440
| 8 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2011-03-17 |
|
| 240-440
| 9 |
FRDRMDFRKMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240 |
|
2011-03-17 |
|
| 240-446
| A |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 0 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 1 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 2 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 3 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 4 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 5 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2003-04-07 |
|
| 240-446
| 6 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-446
| 7 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2003-06-03 |
|
| 240-446
| 8 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2003-06-03 |
|
| 240-446
| 9 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-457
| A |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-457
| 0 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2008-11-14 |
|
| 240-457
| 1 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2010-06-12 |
|
| 240-457
| 2 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2011-02-05 |
|
| 240-457
| 3 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2011-06-24 |
|
| 240-457
| 4 |
FRDRMDFRXTX |
318J COMCAST IP PHONE, LLC |
240 |
|
2011-06-20 |
|
| 240-457
| 5 |
FRDRMDFRKMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240 |
|
2011-10-11 |
|
| 240-457
| 6 |
FRDRMDFRKMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240 |
|
2011-10-11 |
|
| 240-457
| 7 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2009-09-04 |
|
| 240-457
| 8 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2011-09-25 |
|
| 240-457
| 9 |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2009-02-09 |
|
| 240-529
| A |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 240-529
| 0 |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 240-529
| 1 |
FRDRMDFRDS1 |
9212 VERIZON MARYLAND, INC. |
240 |
|
|
|
| 240-529
| 2 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2005-01-09 |
|
| 240-529
| 3 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2005-06-13 |
|
| 240-529
| 4 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2005-06-13 |
|
| 240-529
| 5 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2005-11-07 |
|
| 240-529
| 6 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2006-01-06 |
|
| 240-529
| 7 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2006-02-04 |
|
| 240-529
| 8 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2006-02-05 |
|
| 240-529
| 9 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2006-07-02 |
|
| 240-549
| A |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-549
| 0 |
FRDRMDFRKMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240 |
|
2016-07-14 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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