Local Calling Guide
Area code/prefix search
NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]
NXX: 420
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
443-420 | A | Ellicott City | MD | 071F BANDWIDTH.COM CLEC, LLC - MD | 238 | ||||
443-420 | 2 | Ellicott City | MD | BLTMMDCH40Z | 5562 METROPCS, INC. | 238 | 2018-10-05 | ||
443-420 | 3 | Ellicott City | MD | BLTMMDCHXFX | 318J COMCAST IP PHONE, LLC | 238 | 2019-03-20 | ||
443-420 | 6 | Ellicott City | MD | BLTMMDCH42Z | 876D ONVOY, LLC - MD | 238 | 2016-04-08 | ||
443-420 | 7 | Ellicott City | MD | BLTMMDCH45Z | 071F BANDWIDTH.COM CLEC, LLC - MD | 238 | 2010-02-22 | ||
443-420 | 8 | Ellicott City | MD | BLTMMDCH45Z | 071F BANDWIDTH.COM CLEC, LLC - MD | 238 | 2010-02-22 | ||
443-420 | 9 | Ellicott City | MD | BLTMMDCH42Z | 876D ONVOY, LLC - MD | 238 | 2016-04-08 |
Last updated: Sun, 01 Jun 2025 02:18:11 UTC
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