NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2002-06-05 479-747 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RUSSELLVL AR
2002-06-05 512-566 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LAMPASAS TX
2002-06-05 606-226 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALLEN KY
2002-06-05 606-269 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIDDLESBO KY
2002-06-05 606-335 4XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WHITESBURG KY
2002-06-05 606-417 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FREEBURN KY
2002-06-05 606-481 3XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STANTON KY
2002-06-05 606-534 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 INEZ KY
2002-06-05 606-560 5XXX6XXX7XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BEATTYVL KY
2002-06-05 606-603 2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SOWILLIMSN KY
2002-06-05 606-627 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BARBOURVL KY
2002-06-05 606-733 1XXX2XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BENHAMLNCH KY
2002-06-05 606-795 5XXX6XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVARTS KY
2002-06-05 606-813 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MANCHESTER KY
2002-06-05 606-975 1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 IRVINE KY
2002-06-05 706-756 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 LAGRANGE GA
2002-06-05 918-819 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 NEW HOME OK
2002-06-05 918-844 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 DRUMRIGHT OK
2002-06-05 931-783 1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 COOKEVILLE TN
2002-06-05 937-501 1XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLARKSVL OH
2002-06-05 937-571 1XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WILMINGTON OH
2002-06-05 956-232 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 RAYMONDVL TX
2002-06-05 971-237 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2002-06-04 205-441 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BIRMINGHAM AL
2002-06-04 207-222 0–9 XXXall 10 · 9 holders which blocks → PAETEC ITEL, LLC 829J GORHAM ME
2002-06-04 219-990 1XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REMINGTON IN
2002-06-04 225-328 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2002-06-04 256-633 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FLORENCE AL
2002-06-04 508-401 0–9 XXXall 10 · 8 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAYLAND MA
2002-06-04 508-637 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NOBROOKFLD MA
2002-06-04 518-892 none assigned yet which blocks → METROPCS, INC. 5562 TROY NY
2002-06-04 573-433 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 WAYNESVL MO
2002-06-04 574-203 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAPAZ IN
2002-06-04 574-212 1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MONTEREY IN
2002-06-04 574-228 0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BURNETTSVL IN
2002-06-04 574-241 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NO JUDSON IN
2002-06-04 574-244 1XXX2XXX3XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NO WEBSTER IN
2002-06-04 812-671 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BLOOMINGTN IN
2002-06-04 815-703 none assigned yet which blocks → T-MOBILE USA, INC. 6529 ROCKFORD IL
2002-06-04 815-930 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ELIZABETH IL
2002-06-04 815-960 not yet reported which blocks → NORTH COUNTY COMMUNICATION CORPORATION - CA 7894 LEAF RIVER IL
2002-06-04 908-279 0–9 XXXall 10 · 8 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PLAINFIELD NJ
2002-06-04 908-280 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FANWOOD NJ
2002-06-04 908-336 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NESHANIC NJ
2002-06-04 908-339 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 PHILLIPSBG NJ
2002-06-04 908-443 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW JERSEY, INC. 9206 PEAPACK NJ
2002-06-04 908-448 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 SOMERVILLE NJ
2002-06-04 908-649 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MILLINGTON NJ
2002-06-04 908-651 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKETTSTN NJ
2002-06-04 908-652 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WASHINGTON NJ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.