Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 515J IP HORIZON LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-399 9 Dundalk MD   238   2013-09-06   
443-419 9 Glenwood MD   238   2015-03-21   
443-430 1 Columbia MD   238   2016-10-14   
443-432 6 Prince Frederick MD   238   2015-03-23   
443-441 8 Glenwood MD   238   2016-05-31   
443-456 0 Edgewood MD   238   2013-09-06   
443-456 5 Edgewood MD   238   2016-10-14   
443-461 7 Parkville MD   238   2016-10-14   
443-530 2 Dundalk MD   238   2016-10-14   
443-532 9 Prince Frederick MD   238   2016-01-04   
443-541 6 Cockeysville MD   238   2016-10-14   
443-576 8 Randallstown MD   238   2016-01-04   
443-578 9 Cockeysville MD   238   2015-03-23   
443-584 8 Crofton MD   238   2016-10-14   
443-584 9 Crofton MD   238   2015-03-21   
443-592 8 Elkridge MD   238   2019-04-26   
443-593 0 Elkton MD   238   2016-01-04   
443-593 6 Elkton MD   238   2015-03-23   
443-594 9 Sparrows Point MD   238   2016-10-14   
443-606 9 Fork MD   238   2015-03-21   
443-607 9 West River MD   238   2016-01-04   
443-626 6 Chase MD   238   2015-03-21   
443-648 8 Essex MD   238   2013-09-06   
443-649 8 Sparrows Point MD   238   2016-01-04   
443-650 2 Reisterstown MD   238   2016-10-14   
443-652 9 Towson MD   238   2016-10-14   
443-657 1 Randallstown MD   238   2016-10-14   
443-660 0 Pikesville MD   238   2013-09-06   
443-661 2 Waterloo MD   238   2017-07-07   
443-663 9 Woodlawn MD   238   2016-05-31   
443-685 7 Severn MD   238   2016-10-14   
443-702 9 Armiger-Gibson Island MD BLTMMDCHXHX  238   2021-08-15   
443-707 1 Aberdeen MD   236   2014-08-08   
443-733 8 Waterloo MD   238   2016-05-31   
443-734 0 Severn MD   238   2013-09-06   
443-737 8 Waterloo MD   238   2015-03-21   
443-753 8 Waterloo (Washington DC LATA) MD   236   2016-05-31   
443-775 8 Annapolis MD   238   2016-05-31   
443-776 9 Elkridge MD   238   2015-03-23   
443-784 0 Armiger-Gibson Island MD   238   2013-09-06   
443-792 1 Brooklyn Park-Linthicum MD   238   2015-03-23   
443-792 6 Brooklyn Park-Linthicum MD   238   2016-01-04   
443-828 2 Ellicott City MD   238   2013-09-06   
443-881 1 Reisterstown MD   238   2015-03-23   
443-906 8 Severna Park MD   238   2016-05-31   
443-906 9 Severna Park MD   238   2015-03-21   
443-910 9 Bel Air MD   238   2013-09-06   
443-917 0 Columbia MD   238   2013-09-06   
443-943 8 Sparrows Point MD   238   2015-03-23   
445-212 A Philadelphia Zone 1 PA PHLAPAFGX3Y  228      

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Last updated: Sat, 01 Jun 2024 11:59:14 UTC

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