Local Calling Guide
Area code/prefix search
NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]
NXX: 737
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
443-737 | A | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | 2025-04-01 | |||
443-737 | 0 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | ||||
443-737 | 1 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | ||||
443-737 | 2 | Waterloo | MD | BLTMMDSN6MD | 6119 LEVEL 3 COMMUNICATIONS, LLC - MD | 238 | 2005-07-16 | ||
443-737 | 3 | Waterloo | MD | 2593 CORE COMMUNICATIONS, INC.- MD | 238 | 2019-05-02 | |||
443-737 | 4 | Waterloo | MD | BLTMMDSN6MD | 6119 LEVEL 3 COMMUNICATIONS, LLC - MD | 238 | 2004-02-07 | ||
443-737 | 5 | Waterloo | MD | 2593 CORE COMMUNICATIONS, INC.- MD | 238 | 2019-05-02 | |||
443-737 | 6 | Waterloo | MD | BLTMMDCH42Z | 876D ONVOY, LLC - MD | 238 | 2016-03-21 | ||
443-737 | 7 | Waterloo | MD | BLTMMDCH42Z | 876D ONVOY, LLC - MD | 238 | 2016-03-21 | ||
443-737 | 8 | Waterloo | MD | 515J IP HORIZON LLC | 238 | 2015-03-21 | |||
443-737 | 9 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 |
Last updated: Sun, 01 Jun 2025 02:18:11 UTC
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