NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2014-12-18 848-236 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NJ 637C RAHWAY NJ
2014-12-18 929-361 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN03 NY
2014-12-18 929-365 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN10 NY
2014-12-18 929-423 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN15 NY
2014-12-17 224-505 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C WINNETKA IL
2014-12-17 574-406 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D SOUTH BEND IN
2014-12-17 705-406 not yet reported which blocks → Bell Mobility 6574 Timmins —
2014-12-17 786-773 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C MIAMI FL
2014-12-17 941-210 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SARASOTA FL
2014-12-17 941-212 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PALMETTO FL
2014-12-17 941-216 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRADENTON FL
2014-12-16 346-203 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J HSTNSUBURB TX
2014-12-16 346-207 0–9 XXXall 10 · 4 holders which blocks → SOUTHWESTERN BELL 9533 HSTNSUBURB TX
2014-12-16 346-208 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2014-12-16 574-314 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2014-12-16 708-682 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 BLUEISLAND IL
2014-12-16 732-515 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 METUCHEN NJ
2014-12-16 774-520 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D FALL RIVER MA
2014-12-16 857-309 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MA 892D DORCHESTER MA
2014-12-15 315-922 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 UTICA NY
2014-12-15 424-381 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CMTN CMTN CA
2014-12-15 504-209 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 LAFITTE LA
2014-12-15 520-599 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TUCSON AZ
2014-12-15 574-347 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 SOUTH BEND IN
2014-12-15 580-969 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUGO OK
2014-12-15 631-636 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2014-12-15 860-937 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J HARTFORD CT
2014-12-15 902-696 not yet reported which blocks → TELUS Mobility 8303 Sheet Harbour —
2014-12-15 902-932 not yet reported which blocks → Fibernetics Corporation 464D Halifax —
2014-12-15 951-446 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ARLINGTON CA
2014-12-15 980-635 0–9 XXXall 10 · 6 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 STATESVL NC
2014-12-12 217-803 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E WEST DANA IL
2014-12-12 262-975 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → UNITED STATES CELLULAR - WI 6274 NO PRAIRIE WI
2014-12-12 317-981 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 INDIANAPLS IN
2014-12-12 470-735 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D CONCORD GA
2014-12-12 478-449 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D WARNERRBNS GA
2014-12-12 484-965 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2014-12-12 586-235 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2014-12-12 586-392 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2014-12-12 586-715 8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2014-12-12 586-885 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2014-12-12 615-674 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NASHVILLE TN
2014-12-12 720-669 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CO 026D HUDSON CO
2014-12-12 762-533 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ELBERTON GA
2014-12-12 813-773 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TAMPASTH FL
2014-12-12 941-208 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C ENGLEWOOD FL
2014-12-12 956-530 0–9 XXXall 10 · 3 holders which blocks → STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2014-12-12 956-608 0–9 XXXall 10 · 6 holders which blocks → STPCS JOINT VENTURE, LLC 4290 LAREDO TX
2014-12-12 971-813 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ST HELENS OR
2014-12-11 202-798 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 WSHNGTNZN1 DC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.