| Area Code: | 603 |
| Country: | United States |
| State/Province: | New Hampshire - NH |
| Major City: | Manchester |
| Time Zone: | Eastern |
| About 603 : | The 603 Area Code (or Area Code 603) is located in the state of NH. Area Code 603 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.44 million unique phone numbers and 5.14 million individuals near the city of Newmarket |
Active Prefixes in Area Code 201
| Prefix | Primary City | Usage | Company |
|---|---|---|---|
| 603-947-#### | Plymouth | Landline Numbers | Freedom Ring Communi... |
| 603-948-#### | Rochester | Landline Numbers | Idt America Corp - N... |
| 603-951-#### | Milan | Landline Numbers | Level 3 Communicatio... |
| 603-952-#### | Salem | Landline Numbers | Level 3 Communicatio... |
| 603-953-#### | Dover | Landline Numbers | Choice One Communica... |
| 603-957-#### | Portsmouth | Wireless Numbers | New Cingular Wireles... |
| 603-960-#### | Thornton | Landline Numbers | Bell Atlantic Nynex ... |
| 603-961-#### | Chichester | Landline Numbers | Comcast Phone Of New... |
| 603-964-#### | Rye | Landline Numbers | No New England Tel O... |
| 603-965-#### | Derry | Landline Numbers | Choice One Communica... |
| 603-966-#### | Nashua | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-967-#### | Hampton | Landline Numbers | Level 3 Communicatio... |
| 603-968-#### | Ashland | Landline Numbers | No New England Tel O... |
| 603-969-#### | Portsmouth | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-970-#### | Dover | Wireless Numbers | New Cingular Wireles... |
| 603-971-#### | Rindge | Landline Numbers | Freedom Ring Communi... |
| 603-973-#### | Rochester | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-974-#### | Plaistow | Landline Numbers | Comcast Phone Of New... |
| 603-975-#### | Boscawen | Landline Numbers | Comcast Phone Of New... |
| 603-977-#### | Andover | Landline Numbers | Comcast Phone Of New... |
| 603-978-#### | Dover | Wireless Numbers | New Cingular Wireles... |
| 603-986-#### | North Conway | Landline Numbers | Bell Atlantic Nynex ... |
| 603-988-#### | Portsmouth | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-989-#### | Woodsville | Landline Numbers | No New England Tel O... |
| 603-991-#### | Littleton | Landline Numbers | Bell Atlantic Nynex ... |
| 603-992-#### | Grafton | Landline Numbers | Level 3 Communicatio... |
| 603-994-#### | Rochester | Landline Numbers | Freedom Ring Communi... |
| 603-995-#### | Henniker | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-996-#### | Plymouth | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-997-#### | Hampton | Wireless Numbers | Sprint Spectrum L.p.... |
Recent user feedback
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Marcy Payne
21:43 2024-05-14
Category: Fraud Calls
Didn't recognize #; caller ID just said "HONESDALE PA" (yes, with the gap in the center). Googled the # and another report site had ALREADY flagged it as some sort of health insurance spam call....
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Desdemona Renfield
21:40 2024-05-14
Category: Hang up Calls
6th call from "SAYRE PA" since early March. Only difference is the last 4 digits each time. This time? Picked up & immediately hung up when I saw the caller ID....
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Marcy Payne
18:28 2024-05-13
Category: Sales Calls
Caller ID said "Name Unavailable". I can't count how many calls which have come up on the caller ID that way. So picked up & hung up on general principle.
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Penny Wise
18:26 2024-05-13
Category: Sales Calls
No message left by "Name Unavailable". Another site like this one had # flagged as being "invalid" (which I guess means it's a spoofed number or one that isn't in service. So, likely spam....
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Yuliya F
14:34 2024-05-13
Category: Fraud Calls
HAS to be some sort of fraud: the caller ID came up as "NOT IN SERVICE"! Did not recognize # and for the most part neither did Google (I'm fixing that -- you're welcome...).
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Yuliya F
14:32 2024-05-13
Category: Hang up Calls
No message left by "Name Unavailable" even though call went to voicemail. Another site ALREADY had # flagged as "invalid or not belonging to the US" when I looked it up! Clearly some flavor of scam....
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Yuliya F
19:04 2024-05-10
Category: Fraud Calls
6th call from this area code/exhange in a month. 27th since Jan. which came up as "Name Unavailable" on the caller ID. NO hits on Google. And another report site said # was either "Invalid" or "NOT a US #". I'd call that a Fraud Call, too....
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Yuliya F
15:19 2024-05-10
Category: Sales Calls
Caller ID said "MILTON PA" (the gap is a red flag that it's NOT a legit call -- possibly to fake out caller ID software). Picked up & hung up at once. Almost no info on Google for the # (I'm fixing that -- you're welcome). Also reported # to the FTC....