NRNumberResearch Membership · Data 09/17/2026

← Area code 301

All assignees

800 prefixes in 301 · initial assignments from the NANPA CO code file, 09/17/2026

Prefixes held by all assignees in area code 301
NPA-NXXRate centerOCNAssignedPooled
301-400 WSHNGTNZN2 9212 2010-03-29 Yes
301-401 FREDERICK 4036 — —
301-402 WSHNGTNZN2 9212 — —
301-403 WSHNGTNZN4 9212 — —
301-404 WSHNGTNZN3 6855 — Yes
301-405 WSHNGTNZN4 829J — —
301-406 WSHNGTNZN2 6630 — —
301-407 GAITHERSBG 9212 — Yes
301-408 WSHNGTNZN3 9212 — Yes
301-409 WSHNGTNZN2 624H — Yes
301-410 WSHNGTNZN6 624H 2022-05-05 Yes
301-411 XXXXXXXXXX MULT — —
301-412 WSHNGTNZN2 4036 — —
301-413 WSNGTNZN11 9212 — —
301-414 DAMASCS236 9212 — Yes
301-415 WSHNGTNZN3 9212 — —
301-416 MYERSVILLE 9212 — Yes
301-417 WSNGTNZN10 9212 — Yes
301-418 FREDERICK 9212 2002-11-20 Yes
301-419 WSNG236Z13 9212 — —
301-420 WSHNGTNZN5 9212 — —
301-421 ASHTON236 9212 — —
301-422 WSHNGTNZN4 9212 — —
301-423 WSHNGTNZN5 9212 — —
301-424 WSNGTNZN10 9212 — —
301-425 WSNG236Z13 9212 — —
301-426 WSNG236Z13 9212 — Yes
301-427 WSHNGTNZN3 9212 — —
301-428 WSNGTNZN10 9212 — —
301-429 WSHNGTNZN4 9212 — —
301-430 WSNG236Z14 9212 — Yes
301-431 WSHNGTNZN3 9212 — —
301-432 KEEDYSVL 9212 — Yes
301-433 WSHNGTNZN5 9212 — Yes
301-434 WSHNGTNZN3 9212 — —
301-435 WSHNGTNZN2 9212 — —
301-436 WSHNGTNZN4 9212 — —
301-437 WSHNGTNZN3 6855 — Yes
301-438 WSNGTNZN12 9212 — Yes
301-439 WSHNGTNZN3 9212 — —
301-440 WSHNGTNZN5 5562 — Yes
301-441 WSNG236Z13 9212 — —
301-442 WSHNGTNZN3 6855 — Yes
301-443 WSNGTNZN11 9212 — —
301-444 WSNGTNZN10 9212 — Yes
301-445 WSHNGTNZN3 9212 — —
301-446 WSNG236Z13 9212 — Yes
301-447 EMMITSBURG 9212 — Yes
301-448 WSHNGTNZN3 318J — Yes
301-449 WSHNGTNZN5 9212 — —
301-450 WSHNGTNZN3 4036 2022-07-15 Yes
301-451 WSHNGTNZN2 9212 — —
301-452 WSHNGTNZN3 6395 — —
301-453 KITZMILLER 9212 — Yes
301-454 WSHNGTNZN4 9212 — Yes
301-455 WSHNGTNZN3 6855 — Yes
301-456 WSHNGTNZN5 318J — Yes
301-457 WSHNGTNZN3 9212 — —
301-458 WSHNGTNZN4 7529 — Yes
301-459 WSHNGTNZN4 9212 — —
301-460 WSNGTNZN11 9212 — —
301-461 WSNGTNZN10 6395 — —
301-462 MYERSVILLE 5562 — Yes
301-463 LONACONING 9212 — Yes
301-464 WSNG236Z14 9212 — —
301-465 MYERSVILLE 6855 — Yes
301-466 WSHNGTNZN3 6395 — —
301-467 WSHNGTNZN3 6395 — —
301-468 WSNGTNZN11 9212 — —
301-469 WSHNGTNZN2 9212 — —
301-470 WSNG236Z14 9212 — Yes
301-471 FREDERICK 6395 — —
301-472 MECHANCSVL 9212 — —
301-473 FREDERICK 9212 — Yes
301-474 WSNG236Z13 9212 — —
301-475 LEONARDTN 9212 — —
301-476 ASHTON236 9212 — Yes
301-477 WSNG236Z13 318J — Yes
301-478 FLINTSTONE 9212 — Yes
301-479 WSNG236Z13 7229 — Yes
301-480 WSHNGTNZN2 9212 — —
301-481 LEONARDTN 6395 — —
301-482 DAMASCS236 9212 — Yes
301-483 LAUREL236 9212 — —
301-484 WSHNGTNZN4 318J — —
301-485 WSHNGTNZN6 318J — Yes
301-486 WSNG236Z13 9212 — Yes
301-487 MYERSVILLE 9212 — —
301-488 WSNG236Z13 9212 — —
301-489 WSNG236Z13 9212 — Yes
301-490 LAUREL236 9212 — —
301-491 HAGERSTOWN 4720 — Yes
301-492 WSHNGTNZN2 9212 — —
301-493 WSHNGTNZN2 9212 — —
301-494 WSNG238Z15 9212 — Yes
301-495 WSHNGTNZN3 9212 — —
301-496 WSHNGTNZN2 9212 — —
301-497 LAUREL236 9212 — —
301-498 LAUREL236 9212 — —
301-499 WSHNGTNZN5 9212 — —

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.