NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 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
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 27
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
2011-08-26 470-216 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2011-08-26 470-234 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2011-08-26 704-352 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC
2011-08-26 850-999 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TALLAHASSE FL
2011-08-25 205-480 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL
2011-08-25 320-818 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MIDCONTINENT COMMUNICATIONS - MN 429A FOLEY MN
2011-08-25 321-265 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D MELBOURNE FL
2011-08-25 405-223 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-08-25 410-805 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-25 443-580 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-25 501-216 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-08-25 763-645 0–9 XXXall 10 · 5 holders which blocks → MIDCONTINENT COMMUNICATIONS - MN 429A CAMBRIDGE MN
2011-08-25 775-276 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 RENO NV
2011-08-25 832-270 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2011-08-25 832-517 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2011-08-25 909-332 0–9 XXXall 10 · 7 holders which blocks → WIDE VOICE, LLC - CA 252F S BERNDINO CA
2011-08-24 404-263 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2011-08-24 404-268 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2011-08-24 408-502 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOS GATOS CA
2011-08-24 413-255 0XXX2XXX3XXX5XXX6XXX7XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J GRANBY MA
2011-08-24 507-849 not yet reported which blocks → SOUTHWEST MINNESOTA BROADBAND SERVICES - MN 569G JACKSON MN
2011-08-24 615-436 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F SPENCERMIL TN
2011-08-24 817-617 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C ARLINGTON TX
2011-08-24 845-322 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J HIGHLD FLS NY
2011-08-24 870-300 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DERMOTT AR
2011-08-24 951-337 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2011-08-24 956-633 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → VTX COMMUNICATIONS, LLC 776A SANTA ROSA TX
2011-08-23 226-368 not yet reported which blocks → TELUS Integrated Communications 2782 Brantford —
2011-08-23 289-243 not yet reported which blocks → Distributel 082E Oakville —
2011-08-23 289-263 not yet reported which blocks → Distributel 082E Hamilton —
2011-08-23 310-912 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INGLEWOOD CA
2011-08-23 415-470 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2011-08-23 434-448 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F CONCORD VA
2011-08-23 681-235 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 SCOTTDEPOT WV
2011-08-23 773-492 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2011-08-23 778-528 not yet reported which blocks → Shaw Telecom Inc. 497E Jordan River —
2011-08-23 778-853 not yet reported which blocks → ISP Telecom Inc. 4727 Fort Langley —
2011-08-23 786-354 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2011-08-23 803-262 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-08-23 804-505 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MATHEWS VA
2011-08-23 858-230 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C LA JOLLA CA
2011-08-23 949-491 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 IRVINE CA
2011-08-22 219-213 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CROWNPOINT IN
2011-08-22 331-225 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 ELMHURST IL
2011-08-22 386-457 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ORANGECITY FL
2011-08-22 443-916 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-22 443-932 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-22 443-948 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-22 509-808 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2011-08-22 571-383 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MANASSAS VA

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.