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
2016-09-16 865-443 0–9 XXXall 10 · 2 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN
2016-09-16 914-223 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 OSSINING NY
2016-09-16 971-864 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 BEAVERTON OR
2016-09-15 317-419 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2016-09-15 720-591 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2016-09-15 765-701 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LAFAYETTE IN
2016-09-15 907-302 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANCHORAGE AK
2016-09-15 970-452 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ASPEN CO
2016-09-14 352-901 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LEESBURG FL
2016-09-14 505-737 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2016-09-14 518-808 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C FORT ANN NY
2016-09-14 520-274 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2016-09-14 520-402 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 BENSON AZ
2016-09-14 561-720 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 WPALMBEACH FL
2016-09-14 754-971 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2016-09-14 757-381 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 NRFOLKZON3 VA
2016-09-14 904-667 0–9 XXXall 10 · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 JACKSONVL FL
2016-09-14 904-831 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 JACKSONVL FL
2016-09-14 941-307 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ENGLEWOOD FL
2016-09-13 225-540 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BATONROUGE LA
2016-09-13 312-684 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-09-13 312-687 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-09-13 587-448 not yet reported which blocks → TELUS Mobility 8301 Medicine Hat —
2016-09-13 606-294 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - KY 896E NEON KY
2016-09-13 639-397 not yet reported which blocks → Iristel Inc. 154E Saskatoon —
2016-09-13 682-540 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2016-09-13 702-342 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LAS VEGAS NV
2016-09-13 708-852 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2016-09-13 708-875 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 HARVEY IL
2016-09-13 757-949 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 NRFOLKZON3 VA
2016-09-13 778-691 not yet reported which blocks → TELUS Mobility 8301 Dawson Creek —
2016-09-13 814-699 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E STATECOLLG PA
2016-09-12 256-814 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J SHEFFIELD AL
2016-09-12 574-373 0–9 XXXall 10 · 5 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 WARSAW IN
2016-09-12 612-601 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TWINCITIES MN
2016-09-12 857-773 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 JAMAICA PL MA
2016-09-10 925-214 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WALNUT CRK CA
2016-09-09 320-423 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 ST CLOUD MN
2016-09-09 346-561 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F HOUSTON TX
2016-09-09 469-983 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F DALLAS TX
2016-09-09 830-360 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 NEWBRANFLS TX
2016-09-08 206-785 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2016-09-08 256-815 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSSELLVL AL
2016-09-08 406-729 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WILSALL MT
2016-09-08 469-862 0–9 XXXall 10 · 5 holders which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
2016-09-08 505-208 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H ALBUQURQUE NM
2016-09-08 602-775 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2016-09-08 646-973 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN01 NY
2016-09-08 703-420 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G MANASSAS VA
2016-09-08 757-922 0–9 XXXall 10 · 8 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SUFFOLK VA

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.