| Prefix/Exchange | Location |
|---|---|
| 667-203 | Baltimore |
| 667-205 | Baltimore |
| 667-206 | Baltimore |
| 667-207 | Baltimore |
| 667-208 | Baltimore |
| 667-209 | Baltimore |
| 667-210 | Baltimore |
| 667-212 | Baltimore |
| 667-213 | Baltimore |
| 667-214 | Baltimore |
| 667-216 | Baltimore |
| 667-217 | Baltimore |
| 667-218 | Baltimore |
| 667-219 | Baltimore |
| 667-224 | Baltimore |
| 667-225 | Baltimore |
| 667-228 | Baltimore |
| 667-231 | Baltimore |
| 667-233 | Baltimore |
| 667-234 | Baltimore |
| 667-239 | Baltimore |
| 667-251 | Baltimore |
| 667-253 | Baltimore |
| 667-260 | Baltimore |
| 667-303 | Baltimore |
| 667-305 | Baltimore |
| 667-307 | Baltimore |
| 667-308 | Baltimore |
| 667-309 | Baltimore |
| 667-312 | Baltimore |
| 667-330 | Baltimore |
| 667-367 | Baltimore |
| 667-401 | Baltimore |
| 667-444 | Baltimore |
| 667-600 | Baltimore |
| 667-677 | Baltimore |
| 667-770 | Baltimore |
| 667-777 | Baltimore |
| 667-802 | Baltimore |
| 667-803 | Baltimore |
| 667-888 | Baltimore |
| 667-930 | Baltimore |
| 667-999 | Baltimore |