This specific CoreESIM data plan is geographically restricted to the sovereign territory of St. Kitts and Nevis. Should your itinerary include travel to neighboring islands like Sint Maarten, Antigua, or St. Barths, your data service will cease upon crossing territorial borders. For multi-island itineraries, CoreESIM recommends reviewing our regional Caribbean plans which consolidate coverage across multiple nations, providing a seamless experience without requiring a plan change.
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Does this CoreESIM plan support roaming in adjacent territories such as Sint Maarten or Antigua?
Updated April 22, 2026
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