NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 15
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
2004-08-16 802-922 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BURLINGTON VT
2004-08-16 828-455 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HICKORY NC
2004-08-13 218-366 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MN 184D PARKRAPIDS MN
2004-08-13 270-381 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LUCAS KY
2004-08-13 270-501 2XXX3XXX5XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VINE GROVE KY
2004-08-13 325-788 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F ABILENE TX
2004-08-13 413-349 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HATFIELD MA
2004-08-13 503-609 0XXX1XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F CORBETT OR
2004-08-13 509-207 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 REPUBLIC WA
2004-08-13 518-701 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2004-08-13 715-326 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TIGERTON WI
2004-08-13 715-444 1XXX4XXX5XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEOPIT WI
2004-08-13 803-705 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 COLUMBIA SC
2004-08-13 862-324 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 SUCCASUNNA NJ
2004-08-13 940-403 0XXX1XXX5XXX8XXX which blocks → ONVOY, LLC - TX 903C WICHITAFLS TX
2004-08-12 303-319 0–9 XXXall 10 · 3 holders which blocks → ELBERT COUNTY WIRELESS, LLC 765B DENVER CO
2004-08-12 337-395 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LK CHARLES LA
2004-08-12 402-603 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OSCEOLA NE
2004-08-12 435-621 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 VERNAL UT
2004-08-12 661-442 not yet reported which blocks → SHELCOMM 0051 SNCA NHCS CA
2004-08-12 678-707 0–9 XXXall 10 · 5 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2004-08-12 713-574 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2004-08-12 760-982 not yet reported which blocks → SHELCOMM 0051 VTVL HSPR CA
2004-08-12 805-337 not yet reported which blocks → SHELCOMM 0051 CAMARILLO CA
2004-08-12 937-710 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIDNEY OH
2004-08-12 941-306 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J SARASOTA FL
2004-08-12 951-619 not yet reported which blocks → SHELCOMM 0051 ARLINGTON CA
2004-08-11 434-200 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LYNCHBURG VA
2004-08-11 575-309 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLOVIS NM
2004-08-11 605-467 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 MILBANK SD
2004-08-11 804-205 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA 7238 RICHMOND VA
2004-08-11 870-767 4XXX6XXX7XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 TUCKERMAN AR
2004-08-11 904-755 0–9 XXXall 10 · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2004-08-10 219-728 0–9 XXXall 10 · 6 holders which blocks → ACME COMMUNICATIONS, INC. - IN 9303 CHESTERTON IN
2004-08-10 785-690 0–9 XXXall 10 · 3 holders which blocks → MIDCONTINENT COMMUNICATIONS - KS 995H EUDORA KS
2004-08-10 913-662 0–9 XXXall 10 · 2 holders which blocks → MIDCONTINENT COMMUNICATIONS - KS 995H BASEHOR KS
2004-08-09 806-399 3XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 DUMAS TX
2004-08-09 806-716 0XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 LEVELLAND TX
2004-08-09 843-782 not yet reported which blocks → PALMETTO TELEPHONE COMMUNICATIONS, LLC - SC 154C WALTERBORO SC
2004-08-09 919-566 0–9 XXXwhole prefix which blocks → WINDSTREAM NORTH CAROLINA, INC. 0476 SANFORD NC
2004-08-09 951-616 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2004-08-09 951-813 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2004-08-09 989-325 6XXX7XXX8XXX · 3 holders which blocks → THUMB CELLULAR LP 6718 CARO MI
2004-08-06 205-495 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GUIN AL
2004-08-06 334-577 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ECLECTIC AL
2004-08-06 337-905 not yet reported which blocks → LBH, LLC DBA CAMERON COMMUNICATIONS - LA 645C LK CHARLES LA
2004-08-06 609-833 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLEASANTVL NJ
2004-08-06 806-533 not yet reported which blocks → XIT TELECOMMUNICATIONS & TECHNOLOGY, INC. - TX 7893 BOYS RANCH TX
2004-08-06 919-757 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2004-08-05 416-478 not yet reported which blocks → Bell Canada 8051 Toronto —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.