NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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 27
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
2011-08-22 709-223 not yet reported which blocks → Bragg Communications Inc. 4878 Greenspond —
2011-08-22 709-281 not yet reported which blocks → Bragg Communications Inc. 4878 Lumsden —
2011-08-22 731-462 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C MEDINA TN
2011-08-22 778-253 not yet reported which blocks → TELUS Mobility 8301 Spences Bridge —
2011-08-22 848-209 0–9 XXXall 10 · 7 holders which blocks → BLOCK LINE SYSTEMS, LLC - NJ 835E NEWBRNSWCK NJ
2011-08-22 941-243 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 BRADENTON FL
2011-08-22 954-204 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 DEERFLDBCH FL
2011-08-19 226-783 not yet reported which blocks → Iristel Inc. 154E Windsor —
2011-08-19 250-900 not yet reported which blocks → Iristel Inc. 154E Victoria —
2011-08-19 484-714 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2011-08-19 608-336 0–9 XXXall 10 · 5 holders which blocks → UTELCO, INC. 0963 MONROE WI
2011-08-19 608-773 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MID-PLAINS TEL., INC. 0881 CROSS PL WI
2011-08-19 608-858 1XXX5XXX8XXX · 2 holders which blocks → MID-PLAINS TEL., INC. 0881 MIDDLETON WI
2011-08-19 778-400 not yet reported which blocks → Iristel Inc. 154E Victoria —
2011-08-19 778-401 not yet reported which blocks → Iristel Inc. 154E Victoria —
2011-08-19 819-410 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2011-08-18 202-308 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2011-08-18 208-920 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANDPOINT ID
2011-08-18 240-340 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-08-18 240-400 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-08-18 312-257 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2011-08-18 361-323 not yet reported which blocks → VTX COMMUNICATIONS, LLC 776A FALFURRIAS TX
2011-08-18 361-346 not yet reported which blocks → VTX COMMUNICATIONS, LLC 776A PREMONT TX
2011-08-18 361-382 not yet reported which blocks → VTX COMMUNICATIONS, LLC 776A ORANGE GRV TX
2011-08-18 361-996 not yet reported which blocks → VTX COMMUNICATIONS, LLC 776A AGUA DULCE TX
2011-08-18 415-361 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL CA
2011-08-18 458-206 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF OREGON, LLC - OR 7537 BEND OR
2011-08-18 559-580 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 COARSEGOLD CA
2011-08-18 609-246 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ATLNTIC CY NJ
2011-08-18 862-247 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 PASSAIC NJ
2011-08-18 910-838 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 ROSEBORO NC
2011-08-18 956-349 not yet reported which blocks → VTX COMMUNICATIONS, LLC 776A LYFORD TX
2011-08-17 231-427 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C MACKINAWCY MI
2011-08-17 234-227 not yet reported which blocks → SUPER-NET, INC. - OH 155F SHREVE OH
2011-08-17 234-429 not yet reported which blocks → SUPER-NET, INC. - OH 155F SMITHVILLE OH
2011-08-17 234-916 not yet reported which blocks → SUPER-NET, INC. - OH 155F FREDECKSBG OH
2011-08-17 252-323 9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 LA GRANGE NC
2011-08-17 252-485 9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 TRENTON NC
2011-08-17 252-486 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 HALIFAX NC
2011-08-17 252-629 1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 LITTLETON NC
2011-08-17 312-241 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN01 IL
2011-08-17 317-350 0–9 XXXall 10 · 9 holders which blocks → COMCAST IP PHONE, LLC 318J BROWNSBURG IN
2011-08-17 425-615 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-08-17 647-470 not yet reported which blocks → Videotron Ltd. 383F Toronto —
2011-08-17 647-687 not yet reported which blocks → Videotron Ltd. 383F Toronto —
2011-08-17 772-200 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 PTST LUCIE FL
2011-08-17 778-525 not yet reported which blocks → Shaw Telecom Inc. 497E Fairmont Hot Springs —
2011-08-17 778-526 not yet reported which blocks → Shaw Telecom Inc. 497E Invermere —
2011-08-17 778-527 not yet reported which blocks → Shaw Telecom Inc. 497E Radium —
2011-08-17 812-286 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C NEWWSHNGTN IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.