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
2020-11-24 662-409 0XXX1XXX2XXX3XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 FULTON MS
2020-11-24 662-421 0XXX4XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 TREMONT MS
2020-11-24 681-223 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WV 449F NEWCUMBRLD WV
2020-11-24 681-585 0XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - WV 449F MIDDLEBORN WV
2020-11-24 681-595 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - WV 449F EAST BANK WV
2020-11-24 681-695 0XXX1XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - WV 449F LUMBERPORT WV
2020-11-24 681-699 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - WV 449F PADEN CITY WV
2020-11-24 681-771 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - WV 449F ATHENS WV
2020-11-24 681-821 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - WV 449F WILLIAMSON WV
2020-11-24 681-822 0XXX1XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → ONVOY, LLC - WV 449F WESTON WV
2020-11-24 681-887 4XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WV 449F THOMAS WV
2020-11-24 720-756 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2020-11-24 720-781 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LONGMONT CO
2020-11-24 740-793 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C BEAVER OH
2020-11-24 912-516 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STATESBORO GA
2020-11-24 912-518 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HINESVILLE GA
2020-11-24 947-227 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C WALLEDLAKE MI
2020-11-23 251-332 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-23 256-838 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2020-11-23 442-340 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-11-23 469-923 0–9 XXXall 10 · 2 holders which blocks → OOMA INC. 345J IRVING TX
2020-11-23 479-432 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC - AR 348F MIDLAND AR
2020-11-23 507-759 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANKATO MN
2020-11-23 520-473 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SIERRAVIST AZ
2020-11-23 540-714 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WARRENTON VA
2020-11-23 561-709 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C BOCA RATON FL
2020-11-23 608-394 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA CROSSE WI
2020-11-23 672-444 not yet reported which blocks → IXICA Communications Inc. 812H Vancouver —
2020-11-23 672-666 not yet reported which blocks → IXICA Communications Inc. 812H Vancouver —
2020-11-23 672-722 not yet reported which blocks → IXICA Communications Inc. 812H New Westminster —
2020-11-23 672-772 not yet reported which blocks → IXICA Communications Inc. 812H Richmond —
2020-11-23 672-777 not yet reported which blocks → IXICA Communications Inc. 812H West Vancouver —
2020-11-23 681-676 1XXX2XXX3XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WV 449F SALEM WV
2020-11-23 681-776 0XXX2XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - WV 449F ARBOVALE WV
2020-11-23 769-256 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
2020-11-23 774-439 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROCKTON MA
2020-11-23 774-445 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MARLBORO MA
2020-11-23 774-446 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SOUTHBDG MA
2020-11-23 859-440 0–9 XXXall 10 · 3 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C LEXINGTON KY
2020-11-23 912-914 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - GA 067D REIDSVILLE GA
2020-11-23 936-325 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C PRAIRIE VW TX
2020-11-23 970-794 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - CO 026D GRANBY CO
2020-11-23 985-980 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - LA 749E EDGARD LA
2020-11-20 216-998 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2020-11-20 240-742 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J WSNG238Z14 MD
2020-11-20 309-841 0XXX1XXX8XXX · 3 holders which blocks → STRATUS NETWORKS 495J ELIZA IL
2020-11-20 318-750 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2020-11-20 352-676 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E HAWTHORNE FL
2020-11-20 365-670 not yet reported which blocks → IXICA Communications Inc. 812H Stoney Creek —
2020-11-20 501-466 0XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - AR 348F COY AR

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.