Phone prefix +1-603428
Phone prefix: +1603428
This prefix is distributed within the state New Hampshire
The largest city within this prefix is Henniker, NH
District: Merrimack
The largest organization: Merrimack Co. Telephone Co., DBA Contoocook Valley
Time Zone: Eastern
Winter time: UTC-5
Summer time: UTC-4
The largest city within the prefix of +1-603428.... numbers is shown below
Henniker, NH.