Phone prefix +1-603620
Phone prefix: +1603620
This prefix is distributed within the state New Hampshire
The largest city within this prefix is Merrimack, NH
District: Hillsborough
The largest organization: United States Cellular Corp. - New Hampshire
Time Zone: Eastern
Winter time: UTC-5
Summer time: UTC-4
The largest city within the prefix of +1-603620.... numbers is shown below
Merrimack, NH.