NRNumberResearch Membership · Data 09/17/2026

← Area code 301

MCIMETRO ACCESS TRANSMISSION SERVICES LLC

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

Prefixes held by MCIMETRO ACCESS TRANSMISSION SERVICES LLC in area code 301
NPA-NXXRate centerOCNAssignedPooled
301-232 ASHTON236 7229 — Yes
301-235 WSNGTNZN16 7229 — Yes
301-242 BRANDYWINE 7229 — Yes
301-250 GAITHERSBG 7229 — Yes
301-256 LAUREL236 7229 — Yes
301-269 WSHNGTNZN2 7229 2014-11-11 Yes
301-272 WSHNGTNZN2 7229 — Yes
301-273 WSHNGTNZN3 7229 — Yes
301-276 WSHNGTNZN4 7229 — Yes
301-278 WSHNGTNZN5 7229 — Yes
301-281 WSHNGTNZN6 7229 — Yes
301-284 WSNGTNZN10 7229 — Yes
301-287 WSNGTNZN11 7229 — Yes
301-288 WSNGTNZN12 7229 — Yes
301-289 WSNG236Z13 7229 — Yes
301-291 WSNG236Z14 7229 — Yes
301-296 WSNGTNZN10 7229 — Yes
301-298 WSNG236Z15 7229 — Yes
301-337 GAITHERSBG 7229 — Yes
301-348 WSNGTNZN11 7229 — Yes
301-364 WSHNGTNZN4 7229 — Yes
301-479 WSNG236Z13 7229 — Yes
301-500 WSHNGTNZN2 7229 — Yes
301-755 WSHNGTNZN3 7229 — Yes
301-778 WSHNGTNZN5 7229 — Yes
301-795 WSNGTNZN10 7229 — Yes
301-804 ASHTON236 7229 — Yes
301-822 WSNGTNZN11 7229 — Yes
301-837 WSNG236Z13 7229 — Yes
301-841 WSHNGTNZN2 7229 — Yes
301-867 WSNG236Z14 7229 — Yes
301-909 WSHNGTNZN5 7229 — Yes
301-944 GAITHERSBG 7229 — Yes
301-945 WSNGTNZN11 7229 — Yes
301-955 WSHNGTNZN4 7229 — Yes
301-957 LAUREL236 7229 — Yes
301-960 WSHNGTNZN3 7229 — Yes
301-965 WSHNGTNZN6 7229 — Yes
301-966 WSNGTNZN12 7229 — Yes
301-968 WSHNGTNZN2 7229 — 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.