Local Calling Guide
Area code/prefix search
NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]
NXX: 661
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
443-661 | A | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | 2025-04-01 | |||
443-661 | 0 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | ||||
443-661 | 1 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | ||||
443-661 | 2 | Waterloo | MD | 515J IP HORIZON LLC | 238 | 2017-07-07 | |||
443-661 | 3 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | ||||
443-661 | 4 | Waterloo | MD | BLTMMDCHXFX | 318J COMCAST IP PHONE, LLC | 238 | 2008-10-06 | ||
443-661 | 5 | Waterloo | MD | 829J PAETEC ITEL, LLC | 238 | ||||
443-661 | 7 | Waterloo | MD | BLTMMDCHXVX | 321J HD CARRIER LLC | 238 | 2020-05-02 | ||
443-661 | 8 | Waterloo | MD | BLTMMDCH42Z | 876D ONVOY, LLC - MD | 238 | 2021-04-29 | ||
443-661 | 9 | Waterloo | MD | BLTMMDCH42Z | 876D ONVOY, LLC - MD | 238 | 2022-09-25 |
Last updated: Sun, 01 Jun 2025 02:18:11 UTC
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