diff --git a/README.md b/README.md
index a5ac522d9..a77305322 100644
--- a/README.md
+++ b/README.md
@@ -290,3 +290,4 @@ Brazil         | BR            | 55           | 0            | Yes        | Yes
   - Mobile numbers are geographically assigned and cannot be determined separately from landlines.
   - Freephone numbers (with a few exceptions) are issued from a shared pool. This could mean a Canadian freephone number look up shows as belonging to a different country if parsed from the E.164 format (parsing from the national number format and country code will work as expected).
   - Virtual (aka personal numbers) are issued from a shared pool and always show as belonging to the United States.
+- Geographically assigned numbers in Mexico are currently only resolved within the eight principal geographic regions of the country.