Map of area codes in the lower 48 US states affected by FCC order 20-100, requiring 10-digit dialing in area codes where 988 is a central office code. Three affected area codes outside of the US mainland are not included: Alaska (907), Hawaii (808), Guam (671). Produced based on <a rel="nofollow" class="external text" href="https://apps.gis.ucla.edu/geodata/dataset/north-america-telephone-area-code-boundaries">shapefiles from the UCLA Geoportal</a>.
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<span class="int-own-work" lang="en">Own work</span>