NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2012-01-05 807-286 not yet reported which blocks → Shaw Telecom Inc. 497E Thunder Bay —
2012-01-04 276-312 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 GRUNDY VA
2012-01-04 385-275 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
2012-01-04 434-421 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 DANVILLE VA
2012-01-04 561-240 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 JUPITER FL
2012-01-04 775-386 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 RENO NV
2012-01-04 848-208 0–9 XXXall 10 · 8 holders which blocks → METROPCS, INC. 5562 EATONTOWN NJ
2012-01-03 720-465 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2012-01-03 813-337 0–9 XXXall 10 · 7 holders which blocks → NUSO, LLC 551G TAMPACEN FL
2011-12-30 385-203 0–9 XXXall 10 · 3 holders which blocks → FIRSTDIGITAL TELECOM, LLC - UT 5727 PROVO UT
2011-12-30 442-281 0–9 XXXall 10 · 4 holders which blocks → PACIFIC BELL 9740 ESCONDIDO CA
2011-12-30 801-396 0–9 XXXall 10 · 4 holders which blocks → FIRSTDIGITAL COMMUNICATIONS, LLC 716D SPRINGVL UT
2011-12-29 386-410 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NWSMYRNBCH FL
2011-12-29 407-307 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ORLANDO FL
2011-12-29 786-424 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2011-12-29 863-213 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKELAND FL
2011-12-29 954-203 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2011-12-28 231-299 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 MANISTEE MI
2011-12-28 405-698 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
2011-12-28 469-302 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J MCKINNEY TX
2011-12-28 567-307 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANSFIELD OH
2011-12-28 609-541 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J ATLNTIC CY NJ
2011-12-28 760-998 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E VTVL HSPR CA
2011-12-28 813-320 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E TAMPASTH FL
2011-12-28 856-333 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J MERCHANTVL NJ
2011-12-27 360-729 0–9 XXXall 10 · 3 holders which blocks → QWEST CORPORATION 9638 VANCOUVER WA
2011-12-27 405-565 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-12-27 502-795 0–9 XXXall 10 · 4 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C LOUISVILLE KY
2011-12-27 606-535 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K EUBANK KY
2011-12-27 606-660 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BRODHEAD KY
2011-12-27 606-699 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FLAT LICK KY
2011-12-27 606-707 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ONEIDA KY
2011-12-27 606-708 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NANCY KY
2011-12-27 606-806 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHOPVILLE KY
2011-12-27 606-960 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WHITE LILY KY
2011-12-27 760-463 0–9 XXXall 10 · 8 holders which blocks → MCC TELEPHONY OF THE WEST, LLC - CA 857F RIDGECREST CA
2011-12-27 917-722 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN14 NY
2011-12-27 918-802 not yet reported which blocks → BTC BROADBAND, INC. 669B RAMONA OK
2011-12-23 209-317 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C COULTERVL CA
2011-12-23 215-251 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 PHLDLPHZN1 PA
2011-12-23 215-678 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 PHLDLPHZN1 PA
2011-12-23 323-358 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2011-12-23 770-545 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2011-12-23 770-549 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2011-12-23 770-743 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2011-12-23 929-221 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NWYRCYZN06 NY
2011-12-22 204-809 not yet reported which blocks → Iristel Inc. 154E Winnipeg —
2011-12-22 262-425 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C SOMERS WI
2011-12-22 289-816 not yet reported which blocks → Iristel Inc. 154E Burlington —
2011-12-22 314-281 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.