Local Calling Guide
Area code/prefix search
NPA: 540
[Rate centres in NPA 540]
[Dial plan for NPA 540]
NXX: 579
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 540-579
| A |
Catoctin |
VA |
|
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
246 |
|
|
|
| 540-579
| 0 |
Catoctin |
VA |
LSBGVALBZMD |
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
246 |
|
2008-02-19 |
|
| 540-579
| 1 |
Catoctin |
VA |
|
5832 CORETEL VIRGINIA, LLC - VA |
246 |
|
2009-03-27 |
|
| 540-579
| 2 |
Catoctin |
VA |
FRBGVAFBJMD |
079F BANDWIDTH.COM CLEC, LLC - VA |
246 |
|
2014-02-28 |
|
| 540-579
| 3 |
Catoctin |
VA |
LSBGVALBQMD |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
246 |
|
2009-04-02 |
|
| 540-579
| 4 |
Catoctin |
VA |
LSBGVALBZMD |
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
246 |
|
2005-09-29 |
|
| 540-579
| 5 |
Catoctin |
VA |
CLPPVACURMD |
138E ONVOY, LLC - VA |
246 |
|
2017-03-29 |
|
| 540-579
| 6 |
Catoctin |
VA |
CLPPVA94DS0 |
275G PEERLESS NETWORK OF VIRGINIA, LLC - VA |
246 |
|
2018-03-15 |
|
| 540-579
| 7 |
Catoctin |
VA |
LSBGVALBZMD |
8825 LEVEL 3 COMMUNICATIONS, LLC - VA |
246 |
|
2008-02-27 |
|
| 540-579
| 8 |
Catoctin |
VA |
LSBGVALBX7X |
318J COMCAST IP PHONE, LLC |
246 |
|
2018-06-21 |
|
| 540-579
| 9 |
Catoctin |
VA |
|
138E ONVOY, LLC - VA |
246 |
|
2026-02-06 |
|
Last updated: Thu, 05 Feb 2026 23:41:55 UTC
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