npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
410-460 | MD | USA MOBILITY WIRELESS, INC. (Spok, Inc) | 6630 | ELKRIDGE | HNVAMDAE3MD | 00/00/0000 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |