Area Code Profile
Area Code 603 Prefixes & Exchanges
Serving New Hampshire, Unites States
Central Office Exchanges (Prefixes)
Select any prefix below to view phone lines, carrier networks, and consumer reports in that exchange:
| Exchange Prefix | City / Location | Line Type |
|---|---|---|
| 1-603-203-#### | Manchester | Wireless |
| 1-603-204-#### | Nashua | Wireless |
| 1-603-205-#### | Portsmouth | Wireless |
| 1-603-206-#### | Manchester | Landline |
| 1-603-208-#### | Lyme | Wireless |
| 1-603-209-#### | Keene | Wireless |
| 1-603-210-#### | Manchester | Landline |
| 1-603-212-#### | Salem | Landline |
| 1-603-213-#### | Derry | Wireless |
| 1-603-214-#### | Errol | Landline |
| 1-603-215-#### | Berlin | Landline |
| 1-603-216-#### | Manchester | Landline |
| 1-603-217-#### | Bristol | Landline |
| 1-603-218-#### | Manchester | Landline |
| 1-603-219-#### | Concord | Wireless |
| 1-603-221-#### | Nashua | Wireless |
| 1-603-222-#### | Manchester | Landline |
| 1-603-223-#### | Concord | Landline |
| 1-603-224-#### | Concord | Landline |
| 1-603-225-#### | Concord | Landline |
| 1-603-226-#### | Concord | Landline |
| 1-603-227-#### | Concord | Landline |
| 1-603-228-#### | Concord | Landline |
| 1-603-229-#### | Concord | Landline |
| 1-603-230-#### | Concord | Landline |
| 1-603-231-#### | Derry | Wireless |
| 1-603-232-#### | Manchester | Landline |
| 1-603-233-#### | Nashua | Wireless |
| 1-603-234-#### | Derry | Wireless |
| 1-603-235-#### | Derry | Wireless |
| 1-603-236-#### | Wonalancet | Landline |
| 1-603-237-#### | Colebrook | Landline |
| 1-603-238-#### | Plymouth | Landline |
| 1-603-239-#### | Winchester | Landline |
| 1-603-240-#### | Manchester | Wireless |
| 1-603-241-#### | Manchester | Wireless |
| 1-603-242-#### | Troy | Landline |
| 1-603-243-#### | Woodsville | Landline |
| 1-603-244-#### | Manchester | Landline |
| 1-603-245-#### | Portsmouth | Landline |
| 1-603-246-#### | Colebrook | Landline |
| 1-603-247-#### | Derry | Wireless |
| 1-603-248-#### | Dover | Wireless |
| 1-603-249-#### | Milford | Landline |
| 1-603-250-#### | Meredith | Landline |
| 1-603-251-#### | Salem | Landline |
| 1-603-252-#### | W Lebanon | Wireless |
| 1-603-253-#### | Meredith | Landline |
| 1-603-254-#### | Plymouth | Wireless |
| 1-603-255-#### | Colebrook | Landline |
| 1-603-256-#### | West Chesterfield | Landline |
| 1-603-257-#### | Plaistow | Landline |
| 1-603-259-#### | Littleton | Landline |
| 1-603-260-#### | Derry | Wireless |
| 1-603-261-#### | Merrimack | Wireless |
| 1-603-262-#### | Merrimack | Landline |
| 1-603-263-#### | Manchester | Landline |
| 1-603-264-#### | Manchester | Wireless |
| 1-603-265-#### | New Boston | Wireless |
| 1-603-266-#### | Tilton | Landline |
| 1-603-267-#### | Belmont | Landline |
| 1-603-268-#### | Suncook | Landline |
| 1-603-269-#### | Rumney | Landline |
| 1-603-270-#### | Manchester | Landline |
| 1-603-271-#### | Concord | Landline |
| 1-603-272-#### | Piermont | Landline |
| 1-603-273-#### | Laconia | Landline |
| 1-603-274-#### | East Kingston | Landline |
| 1-603-275-#### | Derry | Wireless |
| 1-603-276-#### | W Lebanon | Wireless |
| 1-603-277-#### | Hanover | Landline |
| 1-603-278-#### | Jefferson | Landline |
| 1-603-279-#### | Meredith | Landline |
| 1-603-280-#### | Barrington | Landline |
| 1-603-281-#### | Nashua | Wireless |
| 1-603-282-#### | Canaan | Landline |
| 1-603-283-#### | Keene | Landline |
| 1-603-284-#### | North Sandwich | Landline |
| 1-603-285-#### | Dover | Landline |
| 1-603-286-#### | Tilton | Landline |
| 1-603-287-#### | Claremont | Landline |
| 1-603-289-#### | Manchester | Wireless |
| 1-603-290-#### | Concord | Wireless |
| 1-603-291-#### | Greenville | Landline |
| 1-603-292-#### | Newmarket | Landline |
| 1-603-293-#### | Laconia | Landline |
| 1-603-294-#### | Portsmouth | Landline |
| 1-603-295-#### | Durham | Landline |
| 1-603-296-#### | Manchester | Landline |
| 1-603-297-#### | Ctr Ossipee | Landline |
| 1-603-298-#### | W Lebanon | Landline |
| 1-603-300-#### | Chester | Wireless |
| 1-603-301-#### | Ctr Ossipee | Landline |
| 1-603-302-#### | Manchester | Wireless |
| 1-603-303-#### | Manchester | Wireless |
| 1-603-304-#### | Enfield | Wireless |
| 1-603-305-#### | Bedford | Wireless |
| 1-603-306-#### | Lebanon | Landline |
| 1-603-307-#### | North Conway | Wireless |
| 1-603-309-#### | Newport | Wireless |
| 1-603-310-#### | Bedford | Landline |
| 1-603-312-#### | Dover | Wireless |
| 1-603-313-#### | Keene | Wireless |
| 1-603-314-#### | Manchester | Landline |
| 1-603-315-#### | Manchester | Wireless |
| 1-603-317-#### | Milan | Landline |
| 1-603-318-#### | Nashua | Landline |
| 1-603-319-#### | Portsmouth | Landline |
| 1-603-320-#### | Nashua | Wireless |
| 1-603-321-#### | Nashua | Wireless |
| 1-603-322-#### | W Lebanon | Wireless |
| 1-603-323-#### | Tamworth | Landline |
| 1-603-324-#### | Nashua | Landline |
| 1-603-325-#### | Manchester | Landline |
| 1-603-326-#### | Berlin | Landline |
| 1-603-327-#### | Salem | Landline |
| 1-603-328-#### | Salem | Landline |
| 1-603-329-#### | Hampstead | Landline |
| 1-603-330-#### | Rochester | Landline |
| 1-603-331-#### | Colebrook | Landline |
| 1-603-332-#### | Rochester | Landline |
| 1-603-334-#### | Portsmouth | Landline |
| 1-603-335-#### | Rochester | Landline |
| 1-603-336-#### | Hinsdale | Landline |
| 1-603-337-#### | Rochester | Landline |
| 1-603-338-#### | Keene | Landline |
| 1-603-339-#### | Derry | Wireless |
| 1-603-340-#### | Suncook | Wireless |
| 1-603-341-#### | Merrimack | Wireless |
| 1-603-342-#### | Berlin | Landline |
| 1-603-343-#### | Dover | Landline |
| 1-603-344-#### | Suncook | Wireless |
| 1-603-345-#### | Merrimack | Wireless |
| 1-603-346-#### | Plymouth | Landline |
| 1-603-347-#### | Kingston | Landline |
| 1-603-348-#### | N Woodstock | Wireless |
| 1-603-349-#### | W Lebanon | Wireless |
| 1-603-350-#### | E Rochester | Landline |
| 1-603-351-#### | Manchester | Landline |
| 1-603-352-#### | Keene | Landline |
| 1-603-353-#### | Orford | Landline |
| 1-603-354-#### | Keene | Landline |
| 1-603-355-#### | Keene | Landline |
| 1-603-356-#### | North Conway | Landline |
| 1-603-357-#### | Keene | Landline |
| 1-603-358-#### | Keene | Landline |
| 1-603-359-#### | Lebanon | Wireless |
| 1-603-360-#### | Orford | Landline |
| 1-603-361-#### | Manchester | Landline |
| 1-603-362-#### | Hampstead | Landline |
| 1-603-363-#### | Chesterfield | Landline |
| 1-603-364-#### | Gilmanton | Landline |
| 1-603-365-#### | Merrimack | Wireless |
| 1-603-366-#### | Laconia | Landline |
| 1-603-367-#### | Madison | Landline |
| 1-603-369-#### | Concord | Landline |
| 1-603-370-#### | Candia | Wireless |
| 1-603-371-#### | Peterborough | Landline |
| 1-603-372-#### | Claremont | Landline |
| 1-603-373-#### | Portsmouth | Landline |
| 1-603-374-#### | Bartlett | Landline |
| 1-603-375-#### | Ashland | Landline |
| 1-603-376-#### | Dover | Wireless |
| 1-603-377-#### | Merrimack | Wireless |
| 1-603-378-#### | Plaistow | Landline |
| 1-603-379-#### | Rye | Landline |
| 1-603-380-#### | Portsmouth | Wireless |
| 1-603-381-#### | W Lebanon | Wireless |
| 1-603-382-#### | Plaistow | Landline |
| 1-603-383-#### | Jackson | Landline |
| 1-603-384-#### | Manchester | Landline |
| 1-603-385-#### | Manchester | Wireless |
| 1-603-386-#### | Nashua | Landline |
| 1-603-387-#### | Laconia | Wireless |
| 1-603-388-#### | Colebrook | Landline |
| 1-603-389-#### | Durham | Landline |
| 1-603-390-#### | Jefferson | Landline |
| 1-603-391-#### | Manchester | Landline |
| 1-603-392-#### | Winchester | Landline |
| 1-603-393-#### | Laconia | Wireless |
| 1-603-394-#### | Seabrook | Landline |
| 1-603-395-#### | Exeter | Landline |
| 1-603-396-#### | Merrimack | Wireless |
| 1-603-397-#### | Durham | Landline |
| 1-603-398-#### | W Lebanon | Wireless |
| 1-603-399-#### | Westmoreland | Landline |
| 1-603-400-#### | Hollis | Landline |
| 1-603-401-#### | Hampton | Wireless |
| 1-603-402-#### | Nashua | Wireless |
| 1-603-410-#### | Manchester | Landline |
| 1-603-412-#### | Plymouth | Wireless |
| 1-603-413-#### | Manchester | Landline |
| 1-603-414-#### | Sunapee | Wireless |
| 1-603-415-#### | Concord | Landline |
| 1-603-418-#### | Exeter | Landline |
| 1-603-419-#### | Suncook | Wireless |
| 1-603-420-#### | Nashua | Landline |
| 1-603-421-#### | Derry | Landline |
| 1-603-422-#### | Portsmouth | Landline |
| 1-603-423-#### | Merrimack | Landline |
| 1-603-424-#### | Merrimack | Landline |
| 1-603-425-#### | Derry | Landline |
| 1-603-426-#### | Derry | Wireless |
| 1-603-427-#### | Portsmouth | Landline |
| 1-603-428-#### | Henniker | Landline |
| 1-603-429-#### | Merrimack | Landline |
| 1-603-430-#### | Portsmouth | Landline |
| 1-603-431-#### | Portsmouth | Landline |
| 1-603-432-#### | Derry | Landline |
| 1-603-433-#### | Portsmouth | Landline |
| 1-603-434-#### | Derry | Landline |
| 1-603-435-#### | Pittsfield | Landline |
| 1-603-436-#### | Portsmouth | Landline |
| 1-603-437-#### | Derry | Landline |
| 1-603-438-#### | Nashua | Wireless |
| 1-603-439-#### | Keene | Landline |
| 1-603-440-#### | Merrimack | Landline |
| 1-603-442-#### | Lebanon | Landline |
| 1-603-443-#### | Lebanon | Landline |
| 1-603-444-#### | Littleton | Landline |
| 1-603-445-#### | North Walpole | Landline |
| 1-603-446-#### | Marlow | Landline |
| 1-603-447-#### | Conway | Landline |
| 1-603-448-#### | Lebanon | Landline |
| 1-603-449-#### | Milan | Landline |
| 1-603-452-#### | Conway | Landline |
| 1-603-454-#### | Sunapee | Wireless |
| 1-603-455-#### | Laconia | Wireless |
| 1-603-456-#### | Warner | Landline |
| 1-603-458-#### | Salem | Landline |
| 1-603-459-#### | Nashua | Landline |
| 1-603-460-#### | Manchester | Landline |
| 1-603-461-#### | Merrimack | Wireless |
| 1-603-462-#### | Deerfield | Landline |
| 1-603-463-#### | Deerfield | Landline |
| 1-603-464-#### | Hillsboro | Landline |
| 1-603-465-#### | Hollis | Landline |
| 1-603-466-#### | Gorham | Landline |
| 1-603-467-#### | Manchester | Wireless |
| 1-603-468-#### | Seabrook | Landline |
| 1-603-469-#### | Lebanon | Landline |
| 1-603-470-#### | Concord | Wireless |
| 1-603-471-#### | Bedford | Landline |
| 1-603-472-#### | Bedford | Landline |
| 1-603-473-#### | Milton Mills | Landline |
| 1-603-474-#### | Seabrook | Landline |
| 1-603-475-#### | Salem | Wireless |
| 1-603-476-#### | South Tamworth | Landline |
| 1-603-477-#### | Claremont | Wireless |
| 1-603-478-#### | Hillsboro | Landline |
| 1-603-479-#### | Derry | Wireless |
| 1-603-480-#### | Manchester | Wireless |
| 1-603-481-#### | Manchester | Wireless |
| 1-603-482-#### | Errol | Landline |
| 1-603-483-#### | Candia | Landline |
| 1-603-485-#### | Suncook | Landline |
| 1-603-486-#### | Manchester | Wireless |
| 1-603-487-#### | New Boston | Landline |
| 1-603-488-#### | Manchester | Landline |
| 1-603-489-#### | Manchester | Landline |
| 1-603-490-#### | Derry | Wireless |
| 1-603-491-#### | Concord | Wireless |
| 1-603-492-#### | Manchester | Wireless |
| 1-603-493-#### | Merrimack | Wireless |
| 1-603-494-#### | Merrimack | Wireless |
| 1-603-495-#### | Washington | Landline |
| 1-603-496-#### | Concord | Wireless |
| 1-603-497-#### | Goffstown | Landline |
| 1-603-498-#### | Portsmouth | Wireless |
| 1-603-499-#### | Keene | Landline |
| 1-603-501-#### | Portsmouth | Landline |
| 1-603-502-#### | Portsmouth | Wireless |
| 1-603-503-#### | Lancaster | Landline |
| 1-603-504-#### | Claremont | Wireless |
| 1-603-505-#### | Derry | Wireless |
| 1-603-508-#### | Pelham | Wireless |
| 1-603-509-#### | Dover | Landline |
| 1-603-510-#### | Meriden | Landline |
| 1-603-512-#### | Manchester | Wireless |
| 1-603-513-#### | Concord | Landline |
| 1-603-515-#### | Wolfeboro | Landline |
| 1-603-516-#### | Dover | Landline |
| 1-603-517-#### | Merrimack | Wireless |
| 1-603-518-#### | Manchester | Landline |
| 1-603-520-#### | Laconia | Wireless |
| 1-603-521-#### | Nashua | Landline |
| 1-603-522-#### | Sanbornville | Landline |
| 1-603-523-#### | Canaan | Landline |
| 1-603-524-#### | Laconia | Landline |
| 1-603-525-#### | Hancock | Landline |
| 1-603-526-#### | New London | Landline |
| 1-603-527-#### | Laconia | Landline |
| 1-603-528-#### | Laconia | Landline |
| 1-603-529-#### | Weare | Landline |
| 1-603-530-#### | Bristol | Wireless |
| 1-603-531-#### | Portsmouth | Wireless |
| 1-603-532-#### | Jaffrey | Landline |
| 1-603-533-#### | Merrimack | Wireless |
| 1-603-534-#### | Dover | Wireless |
| 1-603-535-#### | Plymouth | Landline |
| 1-603-536-#### | Plymouth | Landline |
| 1-603-537-#### | Derry | Landline |
| 1-603-538-#### | Pittsburg | Landline |
| 1-603-539-#### | Ctr Ossipee | Landline |
| 1-603-540-#### | Goffstown | Wireless |
| 1-603-541-#### | Manchester | Landline |
| 1-603-542-#### | Claremont | Landline |
| 1-603-543-#### | Claremont | Landline |
| 1-603-544-#### | Center Tuftonboro | Landline |
| 1-603-545-#### | Concord | Landline |
| 1-603-546-#### | Nashua | Landline |
| 1-603-547-#### | Greenfield | Landline |
| 1-603-548-#### | Derry | Wireless |
| 1-603-549-#### | Derry | Wireless |
| 1-603-551-#### | Manchester | Landline |
| 1-603-552-#### | Manchester | Landline |
| 1-603-553-#### | Derry | Wireless |
| 1-603-554-#### | Milford | Wireless |
| 1-603-556-#### | Laconia | Landline |
| 1-603-557-#### | Nashua | Wireless |
| 1-603-558-#### | Claremont | Wireless |
| 1-603-559-#### | Portsmouth | Landline |
| 1-603-560-#### | Salem | Wireless |
| 1-603-561-#### | Nashua | Wireless |
| 1-603-562-#### | Peterborough | Wireless |
| 1-603-563-#### | Harrisville | Landline |
| 1-603-564-#### | Manchester | Wireless |
| 1-603-565-#### | Penacook | Landline |
| 1-603-566-#### | Nashua | Wireless |
| 1-603-567-#### | Peterborough | Landline |
| 1-603-568-#### | Concord | Wireless |
| 1-603-569-#### | Wolfeboro | Landline |
| 1-603-570-#### | Portsmouth | Landline |
| 1-603-571-#### | Derry | Wireless |
| 1-603-572-#### | Nashua | Wireless |
| 1-603-573-#### | Manchester | Landline |
| 1-603-574-#### | Alstead | Landline |
| 1-603-575-#### | Littleton | Landline |
| 1-603-576-#### | Lyme | Landline |
| 1-603-577-#### | Nashua | Landline |
| 1-603-578-#### | Nashua | Landline |
| 1-603-579-#### | Nashua | Landline |
| 1-603-580-#### | Exeter | Landline |
| 1-603-581-#### | Laconia | Landline |
| 1-603-582-#### | Merrimack | Wireless |
| 1-603-583-#### | Exeter | Landline |
| 1-603-585-#### | Fitzwilliam | Landline |
| 1-603-586-#### | Jefferson | Landline |
| 1-603-587-#### | Manchester | Landline |
| 1-603-588-#### | Antrim | Landline |
| 1-603-589-#### | Nashua | Landline |
| 1-603-590-#### | Durham | Landline |
| 1-603-591-#### | Manchester | Wireless |
| 1-603-592-#### | Chesterfield | Landline |
| 1-603-593-#### | Jaffrey | Landline |
| 1-603-594-#### | Nashua | Landline |
| 1-603-595-#### | Nashua | Landline |
| 1-603-596-#### | Nashua | Wireless |
| 1-603-597-#### | Lyme | Landline |
| 1-603-598-#### | Nashua | Landline |
| 1-603-599-#### | Nashua | Wireless |
| 1-603-601-#### | Hampton | Landline |
| 1-603-606-#### | Manchester | Landline |
| 1-603-608-#### | Northwood | Wireless |
| 1-603-609-#### | Dover | Landline |
| 1-603-610-#### | Portsmouth | Landline |
| 1-603-612-#### | Plaistow | Landline |
| 1-603-613-#### | Colebrook | Landline |
| 1-603-614-#### | West Chesterfield | Landline |
| 1-603-615-#### | Manchester | Wireless |
| 1-603-616-#### | Littleton | Wireless |
| 1-603-617-#### | Dover | Landline |
| 1-603-618-#### | Woodsville | Landline |
| 1-603-620-#### | Merrimack | Wireless |
| 1-603-621-#### | Manchester | Landline |
| 1-603-622-#### | Manchester | Landline |
| 1-603-623-#### | Manchester | Landline |
| 1-603-624-#### | Manchester | Landline |
| 1-603-625-#### | Manchester | Landline |
| 1-603-626-#### | Manchester | Landline |
| 1-603-627-#### | Manchester | Landline |
| 1-603-628-#### | Manchester | Landline |
| 1-603-629-#### | Manchester | Landline |
| 1-603-630-#### | Laconia | Wireless |
| 1-603-631-#### | Lancaster | Wireless |
| 1-603-632-#### | Enfield | Landline |
| 1-603-633-#### | Manchester | Landline |
| 1-603-634-#### | Manchester | Landline |
| 1-603-635-#### | Pelham | Landline |
| 1-603-636-#### | Groveton | Landline |
| 1-603-637-#### | Bedford | Landline |
| 1-603-638-#### | Monroe | Landline |
| 1-603-639-#### | Manchester | Wireless |
| 1-603-640-#### | Hanover | Landline |
| 1-603-641-#### | Manchester | Landline |
| 1-603-642-#### | Kingston | Landline |
| 1-603-643-#### | Hanover | Landline |
| 1-603-644-#### | Manchester | Landline |
| 1-603-645-#### | Manchester | Landline |
| 1-603-646-#### | Hanover | Landline |
| 1-603-647-#### | Manchester | Landline |
| 1-603-648-#### | Franklin | Landline |
| 1-603-650-#### | Hanover | Landline |
| 1-603-651-#### | Ctr Ossipee | Wireless |
| 1-603-652-#### | Farmington | Landline |
| 1-603-653-#### | Hanover | Landline |
| 1-603-654-#### | Wilton | Landline |
| 1-603-655-#### | Manchester | Wireless |
| 1-603-656-#### | Manchester | Landline |
| 1-603-657-#### | Manchester | Landline |
| 1-603-658-#### | Exeter | Landline |
| 1-603-659-#### | Newmarket | Landline |
| 1-603-660-#### | Goffstown | Wireless |
| 1-603-661-#### | Manchester | Wireless |
| 1-603-662-#### | Conway | Wireless |
| 1-603-663-#### | Manchester | Landline |
| 1-603-664-#### | Barrington | Landline |
| 1-603-665-#### | Manchester | Landline |
| 1-603-666-#### | Manchester | Landline |
| 1-603-667-#### | Lebanon | Landline |
| 1-603-668-#### | Manchester | Landline |
| 1-603-669-#### | Manchester | Landline |
| 1-603-670-#### | Merrimack | Landline |
| 1-603-671-#### | Franklin | Landline |
| 1-603-672-#### | Milford | Landline |
| 1-603-673-#### | Milford | Landline |
| 1-603-674-#### | Manchester | Wireless |
| 1-603-675-#### | Cornish | Landline |
| 1-603-676-#### | Hanover | Landline |
| 1-603-677-#### | Meredith | Landline |
| 1-603-678-#### | Lebanon | Landline |
| 1-603-679-#### | Epping | Landline |
| 1-603-680-#### | Hillsboro | Wireless |
| 1-603-681-#### | Salem | Landline |
| 1-603-682-#### | Manchester | Wireless |
| 1-603-683-#### | Merrimack | Landline |
| 1-603-684-#### | Lancaster | Landline |
| 1-603-685-#### | Salem | Landline |
| 1-603-686-#### | Exeter | Wireless |
| 1-603-687-#### | Jackson | Landline |
| 1-603-688-#### | Wilton | Landline |
| 1-603-689-#### | Nashua | Landline |
| 1-603-690-#### | Claremont | Landline |
| 1-603-692-#### | Somersworth | Landline |
| 1-603-693-#### | Epping | Landline |
| 1-603-694-#### | Chatham | Landline |
| 1-603-695-#### | Manchester | Landline |
| 1-603-701-#### | Rochester | Landline |
| 1-603-702-#### | Kingston | Wireless |
| 1-603-703-#### | Manchester | Landline |
| 1-603-705-#### | Salisbury | Landline |
| 1-603-706-#### | Raymond | Landline |
| 1-603-707-#### | Meredith | Wireless |
| 1-603-708-#### | Canterbury | Landline |
| 1-603-709-#### | Plainfield | Landline |
| 1-603-710-#### | Contoocook | Landline |
| 1-603-712-#### | Woodsville | Landline |
| 1-603-714-#### | Manchester | Wireless |
| 1-603-715-#### | Concord | Landline |
| 1-603-716-#### | Manchester | Landline |
| 1-603-717-#### | Concord | Landline |
| 1-603-718-#### | Nashua | Wireless |
| 1-603-719-#### | Keene | Landline |
| 1-603-721-#### | Milford | Wireless |
| 1-603-722-#### | Manchester | Landline |
| 1-603-723-#### | Berlin | Wireless |
| 1-603-724-#### | Manchester | Landline |
| 1-603-725-#### | Tamworth | Landline |
| 1-603-726-#### | Plymouth | Landline |
| 1-603-727-#### | Lebanon | Landline |
| 1-603-728-#### | N Woodstock | Landline |
| 1-603-729-#### | Tilton | Landline |
| 1-603-730-#### | North Conway | Landline |
| 1-603-731-#### | Concord | Wireless |
| 1-603-732-#### | Nashua | Landline |
| 1-603-733-#### | North Conway | Landline |
| 1-603-734-#### | Epping | Landline |
| 1-603-735-#### | Andover | Landline |
| 1-603-736-#### | Northwood | Landline |
| 1-603-737-#### | Laconia | Landline |
| 1-603-738-#### | Concord | Wireless |
| 1-603-739-#### | N Woodstock | Landline |
| 1-603-740-#### | Dover | Landline |
| 1-603-741-#### | New Boston | Landline |
| 1-603-742-#### | Dover | Landline |
| 1-603-743-#### | Dover | Landline |
| 1-603-744-#### | Bristol | Landline |
| 1-603-745-#### | N Woodstock | Landline |
| 1-603-746-#### | Contoocook | Landline |
| 1-603-747-#### | Woodsville | Landline |
| 1-603-748-#### | Warner | Wireless |
| 1-603-749-#### | Dover | Landline |
| 1-603-750-#### | Dover | Landline |
| 1-603-751-#### | Nashua | Landline |
| 1-603-752-#### | Berlin | Landline |
| 1-603-753-#### | Penacook | Landline |
| 1-603-754-#### | Lancaster | Landline |
| 1-603-755-#### | Farmington | Landline |
| 1-603-756-#### | North Walpole | Landline |
| 1-603-757-#### | Keene | Landline |
| 1-603-758-#### | Hampton | Landline |
| 1-603-759-#### | Nashua | Wireless |
| 1-603-760-#### | Seabrook | Landline |
| 1-603-761-#### | Littleton | Landline |
| 1-603-762-#### | Keene | Wireless |
| 1-603-763-#### | Sunapee | Landline |
| 1-603-764-#### | Warren | Landline |
| 1-603-765-#### | Nashua | Wireless |
| 1-603-766-#### | Portsmouth | Landline |
| 1-603-767-#### | Dover | Wireless |
| 1-603-768-#### | Grafton | Landline |
| 1-603-769-#### | Manchester | Landline |
| 1-603-770-#### | Exeter | Wireless |
| 1-603-771-#### | Manchester | Wireless |
| 1-603-772-#### | Exeter | Landline |
| 1-603-773-#### | Exeter | Landline |
| 1-603-774-#### | Bow | Landline |
| 1-603-775-#### | Exeter | Landline |
| 1-603-776-#### | New Durham | Landline |
| 1-603-777-#### | Exeter | Landline |
| 1-603-778-#### | Exeter | Landline |
| 1-603-779-#### | Plymouth | Landline |
| 1-603-780-#### | Canaan | Landline |
| 1-603-781-#### | Dover | Wireless |
| 1-603-782-#### | Manchester | Landline |
| 1-603-783-#### | Canterbury | Landline |
| 1-603-784-#### | Peterborough | Landline |
| 1-603-785-#### | Manchester | Wireless |
| 1-603-786-#### | Wentworth | Landline |
| 1-603-787-#### | Woodsville | Landline |
| 1-603-788-#### | Lancaster | Landline |
| 1-603-789-#### | Grafton | Landline |
| 1-603-790-#### | W Lebanon | Landline |
| 1-603-791-#### | Nashua | Landline |
| 1-603-792-#### | Manchester | Landline |
| 1-603-793-#### | Exeter | Wireless |
| 1-603-795-#### | Lyme | Landline |
| 1-603-796-#### | Boscawen | Landline |
| 1-603-797-#### | Plaistow | Landline |
| 1-603-798-#### | Salisbury | Landline |
| 1-603-799-#### | Manchester | Wireless |
| 1-603-801-#### | Milford | Wireless |
| 1-603-808-#### | Antrim | Landline |
| 1-603-809-#### | Nashua | Wireless |
| 1-603-812-#### | Portsmouth | Landline |
| 1-603-813-#### | Ctr Barnstead | Landline |
| 1-603-814-#### | Seabrook | Wireless |
| 1-603-815-#### | Durham | Landline |
| 1-603-816-#### | Nashua | Landline |
| 1-603-817-#### | Dover | Wireless |
| 1-603-818-#### | Derry | Wireless |
| 1-603-819-#### | Plaistow | Landline |
| 1-603-820-#### | Merrimack | Wireless |
| 1-603-821-#### | Nashua | Landline |
| 1-603-822-#### | Rochester | Landline |
| 1-603-823-#### | Franconia | Landline |
| 1-603-824-#### | Nashua | Landline |
| 1-603-826-#### | Charlestown | Landline |
| 1-603-827-#### | Harrisville | Landline |
| 1-603-828-#### | Portsmouth | Wireless |
| 1-603-829-#### | Sunapee | Landline |
| 1-603-831-#### | Greenfield | Wireless |
| 1-603-832-#### | Laconia | Landline |
| 1-603-833-#### | Rochester | Wireless |
| 1-603-834-#### | Dover | Landline |
| 1-603-835-#### | Alstead | Landline |
| 1-603-836-#### | Manchester | Landline |
| 1-603-837-#### | Whitefield | Landline |
| 1-603-838-#### | Lisbon | Landline |
| 1-603-839-#### | Farmington | Landline |
| 1-603-840-#### | Epsom | Landline |
| 1-603-841-#### | Somersworth | Landline |
| 1-603-842-#### | Dover | Landline |
| 1-603-843-#### | Newport | Landline |
| 1-603-845-#### | Derry | Landline |
| 1-603-846-#### | Bethlehem | Landline |
| 1-603-847-#### | Sullivan | Landline |
| 1-603-848-#### | Concord | Wireless |
| 1-603-851-#### | Manchester | Wireless |
| 1-603-852-#### | Keene | Wireless |
| 1-603-853-#### | Woodsville | Landline |
| 1-603-854-#### | Manchester | Wireless |
| 1-603-855-#### | Alton | Landline |
| 1-603-856-#### | Concord | Landline |
| 1-603-858-#### | Manchester | Wireless |
| 1-603-859-#### | New Durham | Landline |
| 1-603-860-#### | Manchester | Wireless |
| 1-603-861-#### | Tamworth | Landline |
| 1-603-862-#### | Durham | Landline |
| 1-603-863-#### | Newport | Landline |
| 1-603-864-#### | Nashua | Landline |
| 1-603-865-#### | Newport | Landline |
| 1-603-866-#### | Dover | Wireless |
| 1-603-867-#### | Manchester | Wireless |
| 1-603-868-#### | Durham | Landline |
| 1-603-869-#### | Bethlehem | Landline |
| 1-603-870-#### | Salem | Landline |
| 1-603-871-#### | Sanbornville | Landline |
| 1-603-872-#### | Gilmanton Iron Works | Landline |
| 1-603-873-#### | Sunapee | Landline |
| 1-603-874-#### | Lisbon | Landline |
| 1-603-875-#### | Alton | Landline |
| 1-603-876-#### | Marlborough | Landline |
| 1-603-877-#### | New London | Landline |
| 1-603-878-#### | Greenville | Landline |
| 1-603-879-#### | Nashua | Landline |
| 1-603-880-#### | Nashua | Landline |
| 1-603-881-#### | Nashua | Landline |
| 1-603-882-#### | Nashua | Landline |
| 1-603-883-#### | Nashua | Landline |
| 1-603-884-#### | Nashua | Landline |
| 1-603-885-#### | Nashua | Landline |
| 1-603-886-#### | Nashua | Landline |
| 1-603-887-#### | Chester | Landline |
| 1-603-888-#### | Nashua | Landline |
| 1-603-889-#### | Nashua | Landline |
| 1-603-890-#### | Salem | Landline |
| 1-603-891-#### | Nashua | Landline |
| 1-603-892-#### | Concord | Wireless |
| 1-603-893-#### | Salem | Landline |
| 1-603-894-#### | Salem | Landline |
| 1-603-895-#### | Raymond | Landline |
| 1-603-896-#### | Salem | Landline |
| 1-603-897-#### | Nashua | Landline |
| 1-603-898-#### | Salem | Landline |
| 1-603-899-#### | Rindge | Landline |
| 1-603-902-#### | Newbury | Landline |
| 1-603-903-#### | Keene | Landline |
| 1-603-904-#### | Walpole | Landline |
| 1-603-905-#### | Barrington | Landline |
| 1-603-906-#### | Rochester | Landline |
| 1-603-910-#### | Hampton | Landline |
| 1-603-912-#### | Salem | Landline |
| 1-603-913-#### | Manchester | Landline |
| 1-603-915-#### | Gorham | Wireless |
| 1-603-918-#### | Hampton | Wireless |
| 1-603-921-#### | Nashua | Wireless |
| 1-603-922-#### | North Stratford | Landline |
| 1-603-923-#### | Rochester | Landline |
| 1-603-924-#### | Peterborough | Landline |
| 1-603-925-#### | Peterborough | Landline |
| 1-603-926-#### | Hampton | Landline |
| 1-603-927-#### | Newbury | Landline |
| 1-603-928-#### | Suncook | Landline |
| 1-603-929-#### | Hampton | Landline |
| 1-603-930-#### | Nashua | Wireless |
| 1-603-932-#### | Manchester | Landline |
| 1-603-933-#### | Greenfield | Wireless |
| 1-603-934-#### | Franklin | Landline |
| 1-603-935-#### | Manchester | Landline |
| 1-603-937-#### | Meredith | Wireless |
| 1-603-938-#### | Warner | Landline |
| 1-603-939-#### | Center Conway | Landline |
| 1-603-941-#### | Wolfeboro | Landline |
| 1-603-942-#### | Northwood | Landline |
| 1-603-943-#### | Nashua | Wireless |
| 1-603-944-#### | East Kingston | Wireless |
| 1-603-945-#### | Manchester | Landline |
| 1-603-947-#### | Plymouth | Landline |
| 1-603-948-#### | Rochester | Landline |
| 1-603-951-#### | Milan | Landline |
| 1-603-952-#### | Salem | Landline |
| 1-603-953-#### | Dover | Landline |
| 1-603-957-#### | Portsmouth | Wireless |
| 1-603-960-#### | Campton | Wireless |
| 1-603-961-#### | Chichester | Landline |
| 1-603-964-#### | Rye | Landline |
| 1-603-965-#### | Derry | Landline |
| 1-603-966-#### | Nashua | Wireless |
| 1-603-967-#### | Hampton | Landline |
| 1-603-968-#### | Ashland | Landline |
| 1-603-969-#### | Portsmouth | Wireless |
| 1-603-970-#### | Dover | Wireless |
| 1-603-971-#### | Rindge | Landline |
| 1-603-973-#### | Rochester | Wireless |
| 1-603-974-#### | Plaistow | Landline |
| 1-603-975-#### | Boscawen | Landline |
| 1-603-977-#### | Andover | Landline |
| 1-603-978-#### | Dover | Wireless |
| 1-603-986-#### | North Conway | Wireless |
| 1-603-988-#### | Portsmouth | Landline |
| 1-603-989-#### | Woodsville | Landline |
| 1-603-991-#### | Littleton | Wireless |
| 1-603-992-#### | Grafton | Landline |
| 1-603-994-#### | Rochester | Landline |
| 1-603-995-#### | Henniker | Wireless |
| 1-603-996-#### | Plymouth | Wireless |
| 1-603-997-#### | Hampton | Wireless |
| 1-603-998-#### | Laconia | Wireless |
SPONSORED
About Area Code 603
Area code 603 is assigned to the geographic numbering plan serving New Hampshire.
Use the directory table to navigate through central office prefixes and explore individual telephone lines.