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Operating Company Number (OCN): 4716
Carriers are telecom operating companies that own number blocks (NPA-NXX). A number showing this carrier does not guarantee the caller is that company — scam calls can spoof caller ID.
| State | NPA | NXX | Rate center | Open |
|---|---|---|---|---|
| MD | 240 | 235 | WSHNGTNZN2 | Prefix |
| MD | 240 | 238 | WSNGTNZN10 | Prefix |
| MD | 240 | 283 | WSNGTNZN11 | Prefix |
| MD | 240 | 454 | GAITHERSBG | Prefix |
| MD | 240 | 455 | WSHNGTNZN5 | Prefix |
| MD | 240 | 556 | WSNG236Z14 | Prefix |
| MD | 240 | 965 | WSNG236Z13 | Prefix |
| MD | 301 | 314 | WSHNGTNZN4 | Prefix |
| MD | 301 | 405 | WSHNGTNZN4 | Prefix |
| MD | 301 | 560 | WSHNGTNZN4 | Prefix |
| MD | 301 | 576 | WSHNGTNZN3 | Prefix |
| MD | 301 | 591 | GAITHERSBG | Prefix |
| MD | 410 | 293 | ANNAPOLIS | Prefix |
| MD | 443 | 270 | GLENBURNIE | Prefix |
| MD | 443 | 283 | COLUMBIA | Prefix |
| MD | 443 | 321 | ANNAPOLIS | Prefix |
| MD | 443 | 426 | RANDALLSTN | Prefix |
| MD | 443 | 451 | BALTIMORE | Prefix |
| MD | 443 | 459 | ELKRIDGE | Prefix |
| MD | 443 | 522 | REISTERSTN | Prefix |
| MD | 443 | 530 | DUNDALK | Prefix |
| MD | 443 | 541 | COCKEYSVL | Prefix |
| MD | 443 | 603 | ANNAPOLIS | Prefix |
| MD | 443 | 725 | PARKVILLE | Prefix |
| MD | 443 | 729 | WOODLAWN | Prefix |
| MD | 443 | 730 | ESSEX | Prefix |
| MD | 443 | 737 | WATERLO238 | Prefix |
| MD | 443 | 738 | PIKESVILLE | Prefix |
| MD | 443 | 820 | ELKRIDGE | Prefix |
| MD | 443 | 867 | GLENBURNIE | Prefix |
| MD | 443 | 921 | TOWSON | Prefix |
| MD | 443 | 954 | BALTIMORE | Prefix |
carrier lookup • operating company number • ocn lookup • who owns this number • npa nxx • rate center