Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 820

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-820 A Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
240-820 0 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-14   
240-820 1 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-14   
240-820 2 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-22   
240-820 3 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
240-820 4 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
240-820 5 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-15   
240-820 6 Ashton (Baltimore LATA) MD BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238   2021-10-30   
240-820 7 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-15   
240-820 8 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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