NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 404-986 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA GA
— 404-992 not yet reported which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
— 404-993 not yet reported which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
— 404-995 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA GA
— 405-200 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C OKLA CITY OK
— 405-202 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-203 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-204 none assigned yet which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-205 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-206 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-207 0XXX1XXX3XXX4XXX which blocks → SOUTHWESTERN BELL 9533 PAULS VLY OK
— 405-208 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J OKLA CITY OK
— 405-209 none assigned yet which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-210 none assigned yet which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OK
— 405-212 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-214 2XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 SHAWNEE OK
— 405-215 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-216 1XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 EDMOND OK
— 405-217 0XXX3XXX4XXX5XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 NORMAN OK
— 405-218 not yet reported which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-219 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-220 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - OK 6272 SEMINOLE OK
— 405-221 8XXX9XXX which blocks → UNITED STATES CELLULAR - OK 6272 HOLDENVL OK
— 405-222 none assigned yet which blocks → SOUTHWESTERN BELL 9533 CHICKASHA OK
— 405-224 not yet reported which blocks → SOUTHWESTERN BELL 9533 CHICKASHA OK
— 405-227 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-228 not yet reported which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-230 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-231 not yet reported which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-232 not yet reported which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-233 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J ARCADIA OK
— 405-234 0XXX1XXX6XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-235 not yet reported which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-236 not yet reported which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-237 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 MOORE OK
— 405-238 none assigned yet which blocks → SOUTHWESTERN BELL 9533 PAULS VLY OK
— 405-239 0XXX4XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-240 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 CHANDLER OK
— 405-241 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C BRITTON OK
— 405-243 0–9 XXXall 10 · 2 holders which blocks → UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
— 405-245 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-246 0XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C OKLA CITY OK
— 405-247 0XXX which blocks → SOUTHWESTERN BELL 9533 ANADARKO OK
— 405-248 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C OKLA CITY OK
— 405-250 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-251 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → UNITED STATES CELLULAR - OK 6272 WYNNEWOOD OK
— 405-253 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C NORMAN OK
— 405-254 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 BRITTON OK
— 405-256 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MUSTANG OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.