Local Calling Guide

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Switch: SLSPMDSS

Switch (link to prefixes) Switch name Company
SLSPMDSS77W SILVER SPRING   
SLSPMDSSDS0 SILVER SPRING  9212 VERIZON MARYLAND, INC. 
SLSPMDSSDSS SILVER SPRING  9212 VERIZON MARYLAND, INC. 
SLSPMDSSX6X   6630 SPOK, INC.  

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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