NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2002-01-29 323-447 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 14 CA
2002-01-29 408-455 1XXX6XXX7XXX8XXX9XXX which blocks → T-MOBILE USA, INC. 6529 LOS GATOS CA
2002-01-29 408-458 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS GATOS CA
2002-01-29 408-460 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CAMPBELL CA
2002-01-29 414-526 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MILWAUKZN1 WI
2002-01-29 415-465 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 SAUSALITO CA
2002-01-29 530-350 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SHINGLESPG CA
2002-01-29 530-591 1XXX4XXX6XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHICO CA
2002-01-29 530-601 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DAVIS CA
2002-01-29 559-300 1XXX which blocks → T-MOBILE USA, INC. 6529 VISALIA CA
2002-01-29 559-305 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 REEDLEY CA
2002-01-29 608-844 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WISCONDLLS WI
2002-01-29 636-223 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K IMPERIAL MO
2002-01-29 678-548 0XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2002-01-29 678-754 not yet reported which blocks → METROPCS, INC. 5562 NEWNAN GA
2002-01-29 678-886 not yet reported which blocks → METROPCS, INC. 5562 CUMMING GA
2002-01-29 678-887 not yet reported which blocks → METROPCS, INC. 5562 BUFORD GA
2002-01-29 678-918 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ADAIRSVL GA
2002-01-29 678-988 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CEDARTOWN GA
2002-01-29 801-869 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 SALT LAKE UT
2002-01-29 856-308 not yet reported which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 CAMDEN NJ
2002-01-29 901-492 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COLLIERVL TN
2002-01-29 908-748 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 PEAPACK NJ
2002-01-29 928-399 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SEDONA AZ
2002-01-29 928-458 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 PRESCOTT AZ
2002-01-28 205-261 1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-01-28 205-262 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-01-28 205-264 1XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-01-28 205-268 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-01-28 214-968 9XXX which blocks → METROPCS, INC. 5562 GRANDPRARI TX
2002-01-28 219-230 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FIRST COMMUNICATIONS, LLC 460K HAMMOND IN
2002-01-28 224-473 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ROUND LAKE IL
2002-01-28 224-940 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DEERFIELD IL
2002-01-28 239-289 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NAPLES FL
2002-01-28 281-669 0XXX6XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 HOUSTON TX
2002-01-28 306-630 not yet reported which blocks → SaskTel Mobility 9868 Moose Jaw —
2002-01-28 434-806 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CHARLOTSVL VA
2002-01-28 434-808 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 FARMVILLE VA
2002-01-28 478-228 5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MACON GA
2002-01-28 609-736 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → NETCARRIER TELECOM, INC. - NJ 9003 OCEAN CITY NJ
2002-01-28 609-867 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → NETCARRIER TELECOM, INC. - NJ 9003 PLEASANTVL NJ
2002-01-28 613-380 not yet reported which blocks → Videotron Ltd. 8306 Ottawa-Hull —
2002-01-28 626-310 2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2002-01-28 626-354 not yet reported which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
2002-01-28 626-384 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 COVINA CA
2002-01-28 641-352 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J MARSHALLTN IA
2002-01-28 650-450 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2002-01-28 650-454 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2002-01-28 650-490 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MILLBRAE CA
2002-01-28 650-492 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.