Area Code | Region | UTC Offset | DST Observed | Description |
|---|
| 411 | | | | Reserved for special applications |
| 500 | | | | Personal Communication Service |
| 555 | | | | Reserved for directory assistance applications |
| 600 | | | | Canadian Services |
| 700 | | | | Interexchange Carrier Services |
| 800 | | | | US/Canada toll free (see 888, 877, 866, 855, 844, 833, 822) |
| 811 | | | | Reserved for special applications |
| 822 | | | | US/Canada toll free (proposed, may not be in use yet) |
| 829 | | -4 | | Dominican Republic (perm 1/31/2005; mand 8/1/2005; overlaid on 809) |
| 833 | | | | US/Canada toll free (proposed, may not be in use yet) |
| 844 | | | | US/Canada toll free (proposed, may not be in use yet) |
| 855 | | | | US/Canada toll free (proposed, may not be in use yet) |
| 866 | | | | US/Canada toll free |
| 877 | | | | US/Canada toll free |
| 880 | | | | Paid Toll-Free Service |
| 881 | | | | Paid Toll-Free Service |
| 882 | | | | Paid Toll-Free Service |
| 888 | | | | US/Canada toll free |
| 898 | | | | VoIP service |
| 900 | | | | US toll calls -- prices vary with the number called |
| 911 | | | | Emergency |
| 867 | YT | -9 | | Canada: Yukon, Northwest Territories, Nunavut (split from 403/819) |
| 307 | WY | -7 | | Wyoming |
| 304 | WV | -5 | | West Virginia |
| 262 | WI | -6 | | SE Wisconsin: counties of Kenosha, Ozaukee, Racine, Walworth, Washington, Waukesha (split from 414) |
| 414 | WI | -6 | | SE Wisconsin: Milwaukee County (see splits 920, 262) |
| 608 | WI | -6 | | SW Wisconsin: Madison |
| 715 | WI | -6 | | N Wisconsin: Eau Claire, Wausau, Superior |
| 920 | WI | -6 | | NE Wisconsin: Appleton, Green Bay, Sheboygan, Fond du Lac (from Beaver Dam NE to Oshkosh, Appleton, and Door County; part of what used to be 414) |
| 206 | WA | -8 | | W Washington state: Seattle and Bainbridge Island (see splits 253, 360, 425; overlay 564) |
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