Local Calling Guide

Area code/prefix search

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Arbutus, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
667-498 9 BLTMMDCH57Z  7421 AT&T - LOCAL 238   2025-01-17   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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