Local Calling Guide
Switch search
Switch: BLTMMDCH
| Switch (link to prefixes) | Switch name | Company |
|---|---|---|
| BLTMMDCH05Z | ||
| BLTMMDCH06T | BALTIMORE | 071F BANDWIDTH.COM CLEC, LLC - MD |
| BLTMMDCH06T | BALTIMORE | 9212 VERIZON MARYLAND, INC. |
| BLTMMDCH08Z | 4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD | |
| BLTMMDCH13T | BALTIMORE | |
| BLTMMDCH14Z | ||
| BLTMMDCH1DD | BALTIMORE CHARLES STREET | 9212 VERIZON MARYLAND, INC. |
| BLTMMDCH21Z | ||
| BLTMMDCH25Z | 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) | |
| BLTMMDCH3MD | 228C IDT AMERICA, CORP. - MD | |
| BLTMMDCH40Z | 6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | |
| BLTMMDCH40Z | 5562 METROPCS, INC. | |
| BLTMMDCH40Z | 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | |
| BLTMMDCH42Z | 876D ONVOY, LLC - MD | |
| BLTMMDCH45Z | 071F BANDWIDTH.COM CLEC, LLC - MD | |
| BLTMMDCH47Z | 420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD | |
| BLTMMDCH57Z | 7421 AT&T - LOCAL | |
| BLTMMDCH77W | BALTIMORE | |
| BLTMMDCHAMD | ||
| BLTMMDCHCMD | 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD | |
| BLTMMDCHDMD | 551G NUSO, LLC | |
| BLTMMDCHDS2 | BALTIMORE CHARLES STREET | 9212 VERIZON MARYLAND, INC. |
| BLTMMDCHDS3 | BALTIMORE CHARLES STREET 2 | 9212 VERIZON MARYLAND, INC. |
| BLTMMDCHDS6 | BALTIMORE | |
| BLTMMDCHDS7 | BALTIMORE | |
| BLTMMDCHFMD | ||
| BLTMMDCHIMD | ||
| BLTMMDCHLMD | ||
| BLTMMDCHPMD | 820C INTRADO COMMUNICATIONS, LLC | |
| BLTMMDCHQMD | ||
| BLTMMDCHTMD | ||
| BLTMMDCHUMD | 156J RCLEC, INC. | |
| BLTMMDCHW29 | BALTIMORE CHARLES STREET | |
| BLTMMDCHX1X | ||
| BLTMMDCHX1Y | ||
| BLTMMDCHX3Y | 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD | |
| BLTMMDCHX6X | ||
| BLTMMDCHX7X | 073H TELNYX LLC | |
| BLTMMDCHX7Y | 321J HD CARRIER LLC | |
| BLTMMDCHXAX | 7421 AT&T - LOCAL | |
| BLTMMDCHXEX | ||
| BLTMMDCHXFX | 318J COMCAST IP PHONE, LLC | |
| BLTMMDCHXHX | 515J IP HORIZON LLC | |
| BLTMMDCHXHY | ||
| BLTMMDCHXKX | 478J NUSO, LLC | |
| BLTMMDCHXMD | 139F WORLDCALL INTERCONNECT INC. | |
| BLTMMDCHXMX | 506J TWILIO INTERNATIONAL, INC. | |
| BLTMMDCHXNX | 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC | |
| BLTMMDCHXOY | ||
| BLTMMDCHXQX | 197D VONAGE AMERICA LLC | |
| BLTMMDCHXTX | 073H TELNYX LLC |
Last updated: Wed, 18 Jun 2025 02:30:00 UTC
Sponsored by: VoIP Much Phone Company
Like this site? We accept donations via PayPal.