Local Calling Guide
Area code/prefix search
NPA: 301
[Rate centres in NPA 301]
[Dial plan for NPA 301]
NXX: 603
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
301-603
| A |
Washington Zone 11 |
MD |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-603
| 0 |
Washington Zone 11 |
MD |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-603
| 1 |
Washington Zone 11 |
MD |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-603
| 2 |
Washington Zone 11 |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
|
|
301-603
| 3 |
Washington Zone 11 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
|
|
301-603
| 4 |
Washington Zone 11 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
|
|
301-603
| 5 |
Washington Zone 11 |
MD |
WASHDC126MD |
964H BARR TELL USA, INC. |
236 |
|
|
|
301-603
| 6 |
Washington Zone 11 |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
|
|
301-603
| 7 |
Washington Zone 11 |
MD |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-603
| 8 |
Washington Zone 11 |
MD |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
301-603
| 9 |
Washington Zone 11 |
MD |
SLSPMDNBDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
Last updated: Wed, 20 Nov 2024 21:20:06 UTC
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