NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
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
2022-07-28 442-391 0XXX1XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J WINTERHVN CA
2022-07-28 512-500 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2022-07-28 612-488 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2022-07-28 641-268 1XXX2XXX · 2 holders which blocks → AUREON COMMUNICATIONS, LLC 444G LACONA IA
2022-07-28 737-329 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2022-07-28 803-715 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ORANGEBURG SC
2022-07-28 826-202 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CHRISTISBG VA
2022-07-28 826-926 6XXX7XXX9XXX which blocks → ONVOY, LLC - VA 138E ORISKANY VA
2022-07-28 857-396 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2022-07-28 857-397 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2022-07-28 864-259 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2022-07-28 925-505 0–9 XXXall 10 · 5 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LIVERMORE CA
2022-07-28 940-275 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F GAINESVL TX
2022-07-28 948-203 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 NRFOLKZON1 VA
2022-07-28 952-254 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2022-07-28 956-339 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F EDINBURG TX
2022-07-27 301-635 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2022-07-27 319-340 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 WATERLOO IA
2022-07-27 580-469 0XXX1XXX2XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SAYRE OK
2022-07-27 743-248 0XXX1XXX2XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2022-07-27 826-726 6XXX7XXX which blocks → ONVOY, LLC - VA 138E THE PLAINS VA
2022-07-27 826-825 0XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - VA 138E CALVERTON VA
2022-07-27 826-827 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - VA 138E KINGGEORGE VA
2022-07-27 826-828 0XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC - VA 138E MIDDLEBURG VA
2022-07-27 862-402 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BLOOMFIELD NJ
2022-07-27 986-230 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 BOISE ID
2022-07-26 240-939 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN11 MD
2022-07-26 240-940 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN4 MD
2022-07-26 301-550 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-07-26 437-415 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-07-26 437-417 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-07-26 437-962 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-07-26 516-929 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN06 NY
2022-07-26 657-613 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CYPRESS CA
2022-07-26 725-278 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAUGHLIN NV
2022-07-26 765-787 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANDERSON IN
2022-07-26 917-814 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2022-07-26 941-289 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BRADENTON FL
2022-07-26 951-596 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E MORENO CA
2022-07-26 956-315 0–9 XXXwhole prefix which blocks → STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2022-07-25 601-612 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MS 719E MADISON MS
2022-07-25 805-916 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA
2022-07-25 878-254 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON1 PA
2022-07-25 980-396 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E KINGS MT NC
2022-07-22 240-937 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F GAITHERSBG MD
2022-07-22 314-979 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
2022-07-22 347-814 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2022-07-22 385-467 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-07-22 385-470 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F OGDEN UT
2022-07-22 437-556 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.