NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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 26
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
2011-07-11 716-263 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 TONAWANDA NY
2011-07-11 754-220 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E POMPANOBCH FL
2011-07-11 901-244 0–9 XXXall 10 · 4 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-11 918-565 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 TULSA OK
2011-07-11 973-524 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 CHATHAM NJ
2011-07-08 201-494 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 HACKENSACK NJ
2011-07-08 225-443 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F ROUGON LA
2011-07-08 240-278 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2011-07-08 240-578 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2011-07-08 289-201 not yet reported which blocks → Iristel Inc. 154E Brampton —
2011-07-08 312-434 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2011-07-08 402-507 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9631 OMAHA NE
2011-07-08 408-783 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNJS WEST CA
2011-07-08 443-651 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-07-08 510-358 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK MAIN CA
2011-07-08 587-710 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Edmonton —
2011-07-08 587-717 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Calgary —
2011-07-08 647-850 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2011-07-08 720-539 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2011-07-08 870-281 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
2011-07-08 872-212 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2011-07-07 229-785 0–9 XXXall 10 · 7 holders which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 MOULTRIE GA
2011-07-07 470-429 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 WINDER GA
2011-07-07 478-313 0–9 XXXall 10 · 6 holders which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 PERRY GA
2011-07-07 706-532 0–9 XXXwhole prefix which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 DALTON GA
2011-07-07 719-418 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D COLORDOSPG CO
2011-07-07 912-493 0–9 XXXall 10 · 6 holders which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 DOUGLAS GA
2011-07-06 289-667 not yet reported which blocks → Zayo Canada Inc. 8304 Hamilton —
2011-07-06 385-259 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-07-06 435-549 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 VERNAL UT
2011-07-06 501-234 0–9 XXXall 10 · 3 holders which blocks → WINDSTREAM COMMUNICATIONS, INC. - AR 7656 LITTLEROCK AR
2011-07-06 585-371 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2011-07-06 623-335 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2011-07-06 647-255 not yet reported which blocks → Zayo Canada Inc. 8304 Toronto —
2011-07-06 705-300 not yet reported which blocks → Iristel Inc. 154E Barrie —
2011-07-06 719-373 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 COLORDOSPG CO
2011-07-06 778-458 not yet reported which blocks → Bragg Communications Inc. 4878 Sechelt —
2011-07-06 778-462 not yet reported which blocks → Bragg Communications Inc. 4878 Gibsons —
2011-07-06 778-487 not yet reported which blocks → Bragg Communications Inc. 4878 Pender Harbour —
2011-07-06 816-723 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY MO
2011-07-06 902-332 not yet reported which blocks → Zayo Canada Inc. 8304 Halifax —
2011-07-06 912-454 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VIDALIA GA
2011-07-05 260-739 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F FORT WAYNE IN
2011-07-05 281-254 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2011-07-05 470-334 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ADAIRSVL GA
2011-07-05 475-235 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT
2011-07-05 478-302 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 WARNERRBNS GA
2011-07-05 512-765 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2011-07-05 513-462 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-05 647-739 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.