Local calling guide: NPA-NXX search

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

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NPA-NXX	BLOCK	Rate Centre	Region	Switch	OCN	LATA	Eff date
443-727	7	Bishopville	MD		876D ONVOY, LLC - MD	242	2017-04-13
443-727	8	Bishopville	MD		318J COMCAST IP PHONE, LLC	242	2007-08-08
443-728	A	Berlin	MD		829J PAETEC ITEL, LLC	242	2025-04-01
443-728	0	Berlin	MD		145J TERRA NOVA TELECOM INC.	242	2024-02-15
443-728	1	Berlin	MD		829J PAETEC ITEL, LLC	242
443-728	2	Berlin	MD		829J PAETEC ITEL, LLC	242
443-728	3	Berlin	MD		2593 CORE COMMUNICATIONS, INC.- MD	242	2018-10-19
443-728	4	Berlin	MD		2593 CORE COMMUNICATIONS, INC.- MD	242	2018-10-19
443-728	5	Berlin	MD		2593 CORE COMMUNICATIONS, INC.- MD	242	2018-10-19
443-728	6	Berlin	MD		2593 CORE COMMUNICATIONS, INC.- MD	242	2018-10-19
443-728	7	Berlin	MD		2593 CORE COMMUNICATIONS, INC.- MD	242	2018-10-19
443-728	8	Berlin	MD		2593 CORE COMMUNICATIONS, INC.- MD	242	2018-10-19
443-729	A	Woodlawn	MD		829J PAETEC ITEL, LLC	238	2025-04-01
443-729	0	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-729	1	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-729	2	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-729	3	Woodlawn	MD		073H TELNYX LLC	238	2017-04-25
443-729	4	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-729	5	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-729	6	Woodlawn	MD		4036 NEW CINGULAR WIRELESS PCS, LLC - DC	238	2018-12-17
443-729	7	Woodlawn	MD		2593 CORE COMMUNICATIONS, INC.- MD	238	2019-05-02
443-729	8	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-729	9	Woodlawn	MD		829J PAETEC ITEL, LLC	238
443-730	A	Essex	MD		829J PAETEC ITEL, LLC	238	2025-04-01
443-730	0	Essex	MD		829J PAETEC ITEL, LLC	238
443-730	1	Essex	MD		829J PAETEC ITEL, LLC	238
443-730	2	Essex	MD		829J PAETEC ITEL, LLC	238
443-730	3	Essex	MD		6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	238	2015-08-14
443-730	4	Essex	MD		6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	238	2015-08-14
443-730	5	Essex	MD		876D ONVOY, LLC - MD	238	2016-01-14
443-730	6	Essex	MD		318J COMCAST IP PHONE, LLC	238	2016-03-29
443-730	7	Essex	MD		876D ONVOY, LLC - MD	238	2016-03-27
443-730	8	Essex	MD		829J PAETEC ITEL, LLC	238
443-730	9	Essex	MD		829J PAETEC ITEL, LLC	238
443-731	A	Port Deposit	MD	BLTMMDFMDS0	7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD	238
443-731	0	Port Deposit	MD		876D ONVOY, LLC - MD	238	2024-03-03
443-731	1	Port Deposit	MD		420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD	238	2008-08-05
443-731	2	Port Deposit	MD		6119 LEVEL 3 COMMUNICATIONS, LLC - MD	238	2006-03-05
443-731	3	Port Deposit	MD		6119 LEVEL 3 COMMUNICATIONS, LLC - MD	238	2008-11-19
443-731	4	Port Deposit	MD		7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	238	2017-08-03
443-731	5	Port Deposit	MD		876D ONVOY, LLC - MD	238	2018-06-16
443-731	6	Port Deposit	MD		071F BANDWIDTH.COM CLEC, LLC - MD	238	2008-12-11
443-731	7	Port Deposit	MD		321J HD CARRIER LLC	238	2016-05-14
443-731	8	Port Deposit	MD		145J TERRA NOVA TELECOM INC.	238	2024-02-15
443-731	9	Port Deposit	MD		7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD	238
443-732	A	Silver Run	MD	BLTMMDFMDS0	7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD	238
443-732	0	Silver Run	MD		071F BANDWIDTH.COM CLEC, LLC - MD	238	2008-12-11
443-732	1	Silver Run	MD		829J PAETEC ITEL, LLC	238	2004-02-05
443-732	2	Silver Run	MD		071F BANDWIDTH.COM CLEC, LLC - MD	238	2019-03-08
443-732	3	Silver Run	MD		876D ONVOY, LLC - MD	238	2012-10-08

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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