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443-503

You are reviewing the Area Code (NPA/NXX) report for 443-503. Did you mean to search the SMS short code 443503?

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Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
Examples: 206-739-5800, 206, 206-739, 48369
Raw Number443503
Basic Format443-503
NPA (Area Code)443
NXX503

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
443-503-0XXX7229MCIMETRO ACCESS TRANSMISSION SERVICES LLCDUNDALKRTDUNDALKMDMA
443-503-1XXX7229MCIMETRO ACCESS TRANSMISSION SERVICES LLCDUNDALKRTDUNDALKMDMA
443-503-2XXX7229MCIMETRO ACCESS TRANSMISSION SERVICES LLCDUNDALKRTDUNDALKMDMA
443-503-3XXX6119LEVEL 3 COMMUNICATIONS, LLC - MDDUNDALKAS02/01/2005DUNDALKMDMA02/11/2005
443-503-4XXX6119LEVEL 3 COMMUNICATIONS, LLC - MDDUNDALKAS01/27/2003DUNDALKMDMA02/20/2003
443-503-5XXX318JCOMCAST IP PHONE, LLCDUNDALKAS09/06/2006DUNDALKMDMA09/18/2006
443-503-6XXX318JCOMCAST IP PHONE, LLCDUNDALKAS09/06/2006DUNDALKMDMA09/18/2006
443-503-7XXX829JPAETEC ITEL, LLCDUNDALKAS04/08/2009DUNDALKMDMA04/20/2009
443-503-8XXX318JCOMCAST IP PHONE, LLCDUNDALKAS01/07/2013DUNDALKMDMA02/04/2013
443-503-9XXX4036NEW CINGULAR WIRELESS PCS, LLC - DCDUNDALKAS03/05/2020DUNDALKMDMA03/17/2020
443-503-XXXX7229MCIMETRO ACCESS TRANSMISSION SERVICES LLCDUNDALKASDUNDALKMD

Business/Government Phones on the 443-503 Prefix

PhoneNameAddress
443-503-9726Flooring Rebel
443-503-5079Joe's Tavern1006 Dundalk Avenue Baltimore 21224 US
443-503-5214The Glass Grill Tacontento Restaurant6804 Eastern Avenue Baltimore 21224 US
443-503-6218Capitol Rehab1123 Merritt Boulevard Dundalk 21222 US
443-503-6218Baltimore Cryotherapy1119 Merritt Boulevard Dundalk 21222 US
443-503-6245JBM Auto719 North Point Road Baltimore 21237 US

Reports

Anonymous User from , MD

April 28, 2026 at 11:30 AM

443-503-6288 reported as a Robocall. Received on April 28, 2026 at 11:29 AM.
Call for Medical & prescriptions

Anonymous User from , MD

April 23, 2026 at 4:37 PM

443-503-6249 reported as a Robocall. Received on April 23, 2026 at 4:35 PM.
Call for Medical & prescriptions

Anonymous User from Nottingham, Maryland

September 16, 2025 at 1:12 PM

443-503-8645 reported as a Robocall. Received on September 16, 2025 at 1:12 PM.

Anonymous User from , MD

July 14, 2025 at 4:51 PM

443-503-5439 reported as a unwanted call. Received on July 3, 2025 at 1:20 PM.
Call for Dropped call or no message

Anonymous User from , PA

July 10, 2025 at 10:52 AM

443-503-3153 reported as a Live Voice or Other. Received on July 10, 2025 at 10:31 AM.

Anonymous User from West Valley, Utah

March 1, 2025 at 5:49 PM

443-503-3473 reported as a Robocall. Received on February 28, 2025 at 1:08 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , MD

February 6, 2025 at 11:50 AM

443-503-0108 reported as a Robocall. Received on February 6, 2025 at 9:57 AM.
Call for Dropped call or no message

Anonymous User from , MD

April 22, 2024 at 6:13 PM

443-503-3896 reported as a Robocall. Received on April 22, 2024 at 1:30 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from , MO

March 8, 2024 at 12:17 PM

443-503-4060 reported as a unwanted call. Received on March 8, 2024 at 10:10 AM.
Call for No Subject Provided

Anonymous User from Silver Spring, Maryland

November 13, 2023 at 6:07 PM

443-503-0217 reported as a Robocall. Received on November 13, 2023 at 5:08 PM.
Call for Medical & prescriptions

Anonymous User from Ashburn, Maryland

August 22, 2023 at 8:00 PM

443-503-6227 reported as a Robocall. Received on August 22, 2023 at 3:18 PM.

Anonymous User from , MD

April 21, 2023 at 4:37 PM

443-503-8572 reported as a Robocall. Received on April 21, 2023 at 4:33 PM.
Call for Warranties & protection plans

Anonymous User from , MN

October 19, 2022 at 4:11 PM

443-503-3170 reported as a Live Voice or Other. Received on October 18, 2022 at 1:34 PM.

Anonymous User from Vacaville, California

October 18, 2022 at 4:35 PM

443-503-3170 reported as a Robocall. Received on October 18, 2022 at 12:38 AM.
Call for Work from home & other ways to make money

Anonymous User from , IL

October 18, 2022 at 3:23 PM

443-503-3170 reported as a Robocall. Received on October 18, 2022 at 2:19 PM.
Call for Dropped call or no message

Anonymous User from Tempe, Arizona

October 18, 2022 at 12:55 PM

443-503-3170 reported as a Robocall. Received on October 18, 2022 at 9:45 AM.
Call for Work from home & other ways to make money

Most 'popular' numbers on this prefix:

443-503-3XXX: 443-503-3443 | 443-503-3446 | 443-503-3456 | 443-503-3470 | 443-503-3471 | 443-503-3477 | 443-503-3800 | 443-503-3891 | 443-503-3895 | 443-503-3899 |
443-503-4XXX: 443-503-4040 | 443-503-4054 | 443-503-4060 | 443-503-4062 | 443-503-4069 |
443-503-5XXX: 443-503-5600 | 443-503-5640 | 443-503-5645 | 443-503-5649 | 443-503-5753 | 443-503-5757 | 443-503-5760 | 443-503-5761 | 443-503-5764 | 443-503-5787 |
443-503-6XXX: 443-503-6226 | 443-503-6228 | 443-503-6229 | 443-503-6247 | 443-503-6248 | 443-503-6258 | 443-503-6400 | 443-503-6404 | 443-503-6409 | 443-503-6446 | 443-503-6452 | 443-503-6453 |
443-503-8XXX: 443-503-8500 | 443-503-8501 | 443-503-8556 | 443-503-8570 | 443-503-8575 | 443-503-8578 |
443-503-9XXX: 443-503-9644 | 443-503-9645 | 443-503-9648 | 443-503-9900 | 443-503-9922 | 443-503-9924 | 443-503-9929 | 443-503-9962 |