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
2017-01-11 470-392 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NW GA
2017-01-11 551-250 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 FAIR LAWN NJ
2017-01-11 579-643 not yet reported which blocks → Videotron Ltd. 8306 Berthierville —
2017-01-11 579-644 not yet reported which blocks → Videotron Ltd. 8306 Lanoraie —
2017-01-11 660-348 6XXX9XXX · 2 holders which blocks → WINDSTREAM MISSOURI, INC. 1885 MILAN MO
2017-01-11 720-693 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2017-01-11 762-787 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E GREENVILLE GA
2017-01-11 862-322 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWFOUNDLD NJ
2017-01-11 901-293 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2017-01-10 207-383 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINDHAM ME
2017-01-10 309-233 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MANITO IL
2017-01-10 417-802 2XXX4XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM MISSOURI, INC. 1885 STOTTSCITY MO
2017-01-10 470-366 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2017-01-10 518-909 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C GRANVILLE NY
2017-01-10 901-802 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COLLIERVL TN
2017-01-10 984-484 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 CHAPELHILL NC
2017-01-09 240-665 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2017-01-09 256-860 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E GUNTERSVL AL
2017-01-09 315-916 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AUBURN NY
2017-01-09 334-633 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E LINDEN AL
2017-01-09 470-559 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2017-01-09 470-636 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2017-01-09 480-935 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K PHOENIX AZ
2017-01-09 484-705 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
2017-01-09 754-226 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2017-01-09 754-332 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2017-01-09 909-775 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D FONTANA CA
2017-01-06 719-726 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 COLORDOSPG CO
2017-01-06 720-788 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2017-01-06 980-441 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 HUNTERSVL NC
2017-01-05 346-242 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANGHAMCRK TX
2017-01-05 423-251 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 KINGSPORT TN
2017-01-05 581-652 not yet reported which blocks → Videotron Ltd. 8306 Baie-Ste-Catherine —
2017-01-05 813-730 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 PLANT CITY FL
2017-01-05 928-294 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2017-01-04 438-407 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2017-01-04 531-215 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H OMAHA NE
2017-01-04 561-286 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 BELLEGLADE FL
2017-01-04 717-621 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 LANCASTER PA
2017-01-04 803-650 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 FORT MILL SC
2017-01-04 813-378 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2017-01-04 864-865 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - SC 548E CENTRAL SC
2017-01-03 315-937 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H SYRACUSE NY
2017-01-03 867-201 not yet reported which blocks → SSi Micro Ltd. 940G Igloolik —
2017-01-03 867-202 not yet reported which blocks → SSi Micro Ltd. 940G Iqaluit —
2016-12-30 209-459 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TUOLUMNE CA
2016-12-30 385-277 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-12-30 385-423 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J CLEARFIELD UT
2016-12-30 458-223 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 LEBANON OR
2016-12-30 470-533 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CUMMING GA

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.