603-406

You are reviewing the Area Code (NPA/NXX) report for 603-406. Did you mean to search the SMS short code 603406?

North American Phone Intelligence

Search a phone number, area code, exchange, or short code

Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.

Phone Lookup Top Complaints Area Codes NPA-NXX iMessage

Raw Number	603406
Basic Format	603-406
NPA (Area Code)	603
NXX	406

Call Routing Data

NPA-NXX-X	OCN	Company	Rate Center	Use Type	Assign Date	City	State	Region	Block Effective Date
603-406-0XXX	6386	BELL ATLANTIC MOBILE, INC	CONCORD	AS	08/04/2020	CONCORD	NH	NE	08/14/2020
603-406-1XXX	6386	BELL ATLANTIC MOBILE, INC	CONCORD	AS	12/16/2019	CONCORD	NH	NE	01/13/2020
603-406-2XXX	7778	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH	CONCORD	AS	12/16/2019	CONCORD	NH	NE	12/26/2019
603-406-3XXX	6889	OMNIPOINT MIAMI E LICENSE, LLC	CONCORD	AS	06/28/2019	CONCORD	NH	NE	08/07/2019
603-406-4XXX	6386	BELL ATLANTIC MOBILE, INC	CONCORD	AS	03/14/2019	CONCORD	NH	NE	03/26/2019
603-406-5XXX	318J	COMCAST IP PHONE, LLC	CONCORD	AS	10/03/2019	CONCORD	NH	NE	11/02/2019
603-406-6XXX	8299	TELEPORT COMMUNICATIONS AMERICA, LLC - NH	CONCORD	AS	03/07/2019	CONCORD	NH	NE	04/04/2019
603-406-7XXX	6889	OMNIPOINT MIAMI E LICENSE, LLC	CONCORD	AS	04/08/2021	CONCORD	NH	NE	05/18/2021
603-406-8XXX	6889	OMNIPOINT MIAMI E LICENSE, LLC	CONCORD	AS	01/06/2021	CONCORD	NH	NE	02/05/2021
603-406-9XXX	6889	OMNIPOINT MIAMI E LICENSE, LLC	CONCORD	AS	12/26/2018	CONCORD	NH	NE	02/23/2019
603-406-XXXX	6889	OMNIPOINT MIAMI E LICENSE, LLC	CONCORD	AS	12/21/2018	CONCORD	NH

Business/Government Phones on the 603-406 Prefix

Phone	Name	Address
603-406-2380	Dunkin'	121 South Main Street Concord 03301 US
603-406-2384	Dunkin' Donuts	412 South Main Street Concord 03301 US
603-406-2385	Dunkin' Donuts	1 Whitney Road Concord 03301 US

Reports

Anonymous User from Hudson, New Hampshire

March 11, 2026 at 5:26 PM

603-406-5934 reported as a Robocall. Received on March 11, 2026 at 5:24 PM.
Call for Medical & prescriptions

Anonymous User from Hollis, New Hampshire

September 25, 2025 at 11:02 AM

603-406-6268 reported as a Live Voice or Other. Received on September 25, 2025 at 11:00 AM.
Call for Medical & prescriptions

Anonymous User from Manchester, New Hampshire

July 21, 2025 at 12:27 PM

603-406-6567 reported as a Robocall. Received on July 21, 2025 at 12:15 PM.
Call for Home improvement & cleaning

Anonymous User from Sugar Hill, New Hampshire

May 22, 2025 at 10:59 AM

603-406-2303 reported as a Robocall. Received on May 22, 2025 at 10:53 AM.
Call for Medical & prescriptions

Anonymous User from Durham, New Hampshire

February 26, 2025 at 12:00 PM

603-406-2969 reported as a Live Voice or Other. Received on February 26, 2025 at 11:54 AM.
Call for Medical & prescriptions

Anonymous User from New London, New Hampshire

February 18, 2025 at 3:21 PM

603-406-6716 reported as a Robocall. Received on February 18, 2025 at 9:07 AM.

Anonymous User from Hudson, New Hampshire

January 28, 2025 at 1:31 PM

603-406-2420 reported as a Robocall. Received on January 28, 2025 at 1:26 PM.
Call for Medical & prescriptions

Anonymous User from Laconia, New Hampshire

January 14, 2025 at 6:14 PM

603-406-5901 reported as a Live Voice or Other. Received on January 14, 2025 at 11:20 AM.
Call for Dropped call or no message

Anonymous User from Merrimack, New Hampshire

September 12, 2024 at 10:45 AM

603-406-2919 reported as a Robocall. Received on September 12, 2024 at 10:31 AM.
Call for Medical & prescriptions

Anonymous User from , NH

August 1, 2024 at 2:11 PM

603-406-2894 reported as a Live Voice or Other. Received on August 1, 2024 at 2:08 PM.

Anonymous User from Nashua, New Hampshire

July 19, 2024 at 10:47 AM

603-406-6178 reported as a Robocall. Received on July 19, 2024 at 10:42 PM.
Call for Medical & prescriptions

Anonymous User from , OR

May 2, 2024 at 3:03 PM

603-406-8127 reported as a Robocall. Received on April 30, 2024 at 1:27 PM.

Anonymous User from Somersworth, New Hampshire

January 5, 2024 at 5:50 PM

603-406-8559 reported as a Live Voice or Other. Received on January 3, 2024 at 10:08 PM.
Call for Charities

Anonymous User from Lee, New Hampshire

November 9, 2023 at 2:18 PM

603-406-9528 reported as a Robocall. Received on November 8, 2023 at 12:00 AM.
Call for No Subject Provided

Anonymous User from , NH

October 18, 2023 at 7:40 PM

603-406-6320 reported as a Robocall. Received on October 18, 2023 at 9:55 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Nashua, New Hampshire

November 27, 2022 at 2:24 PM

603-406-0315 reported as a Robocall. Received on November 9, 2022 at 2:47 PM.
Call for Dropped call or no message

Most 'popular' numbers on this prefix:

603-406-0XXX: 603-406-0303 | 603-406-0308 | 603-406-0309 | 603-406-0314 | 603-406-0315 | 603-406-0316 |
603-406-2XXX: 603-406-2900 | 603-406-2960 | 603-406-2962 | 603-406-2969 | 603-406-2992 | 603-406-2998 |
603-406-3XXX: 603-406-3500 | 603-406-3511 | 603-406-3514 | 603-406-3515 | 603-406-3558 |
603-406-4XXX: 603-406-4971 | 603-406-4976 | 603-406-4977 | 603-406-4996 | 603-406-4997 | 603-406-4998 |
603-406-5XXX: 603-406-5900 | 603-406-5906 | 603-406-5909 | 603-406-5997 |
603-406-6XXX: 603-406-6170 | 603-406-6177 | 603-406-6178 | 603-406-6188 | 603-406-6197 | 603-406-6198 | 603-406-6322 | 603-406-6325 | 603-406-6327 | 603-406-6362 | 603-406-6363 | 603-406-6369 | 603-406-6710 | 603-406-6711 | 603-406-6712 | 603-406-6761 | 603-406-6762 | 603-406-6767 |
603-406-8XXX: 603-406-8122 | 603-406-8125 | 603-406-8126 | 603-406-8181 | 603-406-8187 | 603-406-8188 | 603-406-8500 | 603-406-8556 | 603-406-8558 | 603-406-8559 |
603-406-9XXX: 603-406-9500 | 603-406-9520 | 603-406-9522 | 603-406-9524 | 603-406-9550 |