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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2016-01-14 779-239 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRINCETON IL
2016-01-14 912-299 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → GEORGIA WINDSTREAM, INC. 4425 UVALDA GA
2016-01-13 253-392 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2016-01-13 254-410 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEMPLE TX
2016-01-13 306-805 not yet reported which blocks → Iristel Inc. 154E Lanigan —
2016-01-13 313-509 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN2 MI
2016-01-13 470-389 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2016-01-13 573-284 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 VERSAILLES MO
2016-01-13 573-550 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FULTON MO
2016-01-13 579-796 not yet reported which blocks → Iristel Inc. 154E L'Epiphanie-l'Assomption —
2016-01-13 587-604 not yet reported which blocks → Iristel Inc. 154E Fort McMurray —
2016-01-13 608-885 0–9 XXXall 10 · 7 holders which blocks → UNITED STATES CELLULAR - WI 6274 LANCASTER WI
2016-01-13 629-772 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 MURFREESBO TN
2016-01-13 669-770 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SNJS NORTH CA
2016-01-13 786-857 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2016-01-13 819-900 not yet reported which blocks → Iristel Inc. 154E Kuujjuaq —
2016-01-13 870-970 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C FORREST CY AR
2016-01-13 912-438 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 SAVANNAH GA
2016-01-13 915-352 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 EL PASO TX
2016-01-12 240-817 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-01-12 346-310 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2016-01-12 365-300 not yet reported which blocks → Iristel Inc. 154E Ajax-Pickering —
2016-01-12 365-400 not yet reported which blocks → Iristel Inc. 154E Cobourg —
2016-01-12 401-425 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2016-01-12 469-805 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2016-01-12 571-373 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2016-01-12 571-778 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2016-01-12 647-571 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2016-01-12 707-203 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C ELK CA
2016-01-12 707-606 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C BENICIA CA
2016-01-12 937-963 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2016-01-12 980-259 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 CHARLOTTE NC
2016-01-12 980-425 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 MONROE NC
2016-01-11 312-539 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-01-11 312-838 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-01-11 339-216 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 RANDOLPH MA
2016-01-11 571-775 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2016-01-11 618-706 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BATCHTOWN IL
2016-01-11 720-597 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 LONGMONT CO
2016-01-11 737-208 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2016-01-11 737-213 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SAN MARCOS TX
2016-01-11 737-215 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GEORGETOWN TX
2016-01-11 757-300 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 NRFOLKZON1 VA
2016-01-11 757-807 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 NRFOLKZON2 VA
2016-01-11 804-429 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WAVERLY VA
2016-01-08 385-388 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 MURRAY UT
2016-01-08 469-281 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C DLFTWTARPT TX
2016-01-08 716-475 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 TONAWANDA NY
2016-01-08 716-476 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 TONAWANDA NY
2016-01-08 717-797 0–9 XXXall 10 · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 HANOVER PA

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.