All assignees
466 prefixes in 667 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 667-737 | PERRYVILLE | 516J | 2022-03-01 | Yes |
| 667-738 | SALISBURY | 824J | 2026-03-27 | Yes |
| 667-743 | QUEENSTOWN | 516J | 2022-03-09 | Yes |
| 667-746 | GLENWOOD | 516J | 2022-02-24 | Yes |
| 667-755 | PIKESVILLE | 2596 | 2021-09-29 | Yes |
| 667-758 | SILVER RUN | 965H | 2020-07-15 | Yes |
| 667-766 | STEVENSVL | 876D | 2021-03-18 | Yes |
| 667-767 | STMICHAELS | 876D | 2021-03-18 | Yes |
| 667-770 | BALTIMORE | 691H | 2015-07-23 | Yes |
| 667-771 | BALTIMORE | 530H | 2015-12-04 | Yes |
| 667-772 | SPARKSGLNC | 624H | 2021-04-26 | Yes |
| 667-775 | MILLINGTON | 624H | 2021-06-17 | Yes |
| 667-776 | BALTIMORE | 321J | 2019-09-24 | Yes |
| 667-777 | SEVERNA PK | 568G | 2014-07-08 | Yes |
| 667-778 | SPARROWSPT | 624H | 2021-04-26 | Yes |
| 667-786 | COLUMBIA | 7325 | 2015-11-04 | Yes |
| 667-788 | WESTMINSTR | 2596 | 2021-10-22 | Yes |
| 667-800 | SALISBURY | 876D | 2016-08-16 | Yes |
| 667-802 | CATONSVL | 6855 | 2015-02-20 | Yes |
| 667-803 | SOLOMONS | 071F | 2013-08-16 | Yes |
| 667-808 | EASTON | 568G | 2016-08-23 | Yes |
| 667-810 | SALISBURY | 876D | 2021-03-03 | Yes |
| 667-811 | XXXXXXXXXX | MULT | — | — |
| 667-812 | WATERLO236 | 9212 | 2015-08-14 | Yes |
| 667-824 | EDGEWOOD | 516J | 2022-01-13 | Yes |
| 667-827 | BERLIN | 516J | 2022-03-14 | Yes |
| 667-832 | BRYNPKLNCM | 516J | 2022-02-24 | Yes |
| 667-837 | PT DEPOSIT | 2593 | 2018-10-16 | Yes |
| 667-842 | WOODLAWN | 965H | 2020-07-15 | Yes |
| 667-843 | DEALISLAND | 2593 | 2018-12-10 | Yes |
| 667-846 | COCKEYSVL | 516J | 2022-02-24 | Yes |
| 667-848 | ABERDEEN | 516J | 2021-03-18 | Yes |
| 667-853 | POCOMOKE | 469J | 2019-09-12 | Yes |
| 667-855 | SALISBURY | 145J | 2019-02-22 | Yes |
| 667-856 | DUNDALK | 516J | 2022-03-01 | Yes |
| 667-866 | DARLINGTON | 2593 | 2018-06-04 | Yes |
| 667-867 | BALTIMORE | 939H | 2017-06-20 | Yes |
| 667-868 | CRISFIELD | 792K | 2018-03-09 | Yes |
| 667-876 | ANNAPOLIS | 2593 | 2018-10-18 | Yes |
| 667-877 | PIKESVILLE | 939H | 2022-09-15 | Yes |
| 667-887 | WORTHINGTN | 876D | 2021-03-25 | Yes |
| 667-888 | BALTIMORE | 876D | — | Yes |
| 667-890 | ODENTON | 7325 | 2023-06-14 | Yes |
| 667-891 | ODENTON | 7325 | 2023-06-14 | Yes |
| 667-892 | ODENTON | 7325 | 2023-06-14 | Yes |
| 667-893 | ODENTON | 7325 | 2023-06-14 | Yes |
| 667-894 | ODENTON | 7325 | 2023-06-14 | Yes |
| 667-895 | BALTIMORE | 506J | 2020-10-15 | Yes |
| 667-897 | CHESAPKECY | 506J | 2022-03-30 | Yes |
| 667-899 | BALTIMORE | 965H | 2021-10-25 | Yes |
| 667-900 | BALTIMORE | 145J | 2019-02-20 | Yes |
| 667-910 | BALTIMORE | 876D | 2021-03-03 | Yes |
| 667-911 | XXXXXXXXXX | MULT | — | — |
| 667-925 | BEL AIR | 469J | 2021-09-23 | Yes |
| 667-930 | BALTIMORE | 568G | 2015-03-17 | Yes |
| 667-942 | ABERDEEN | 516J | 2022-02-07 | Yes |
| 667-946 | CHURCHVL | 2593 | 2018-10-15 | Yes |
| 667-950 | — | — | ||
| 667-958 | — | — | ||
| 667-959 | — | — | ||
| 667-962 | NORTHBEACH | 876D | 2021-03-25 | Yes |
| 667-966 | NEWWINDSOR | 876D | 2021-03-25 | Yes |
| 667-967 | GLENBURNIE | 964H | 2016-11-22 | Yes |
| 667-976 | — | — | ||
| 667-977 | SALISBURY | 965H | 2020-07-02 | Yes |
| 667-999 | ELKRIDGE | 876D | 2015-03-23 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.