Suffolk County on New York’s Long Island will have a new area code in 2016. Currently, all of Suffolk County (some larger communities: Babylon, Brookhaven, Southhampton) is served by area code 631. In December, 2014 the New York State Public Service Commission approved overlay code 934 which will serve the same area currently covered by NPA 631.
Mandatory 10 digit dialing will be used for all local calls in the area from June 18, 2016.
- July 18, 2015 – start of permissive 7/10 digit dialing (both may be used, 10 digit dialing is encouraged)
- June 18, 2016 – end of permissive dialing
- July 16, 2016 – area code 934 enters service
See official NANPA announcement and area code map (PDF document)