NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
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
2012-11-02 832-762 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HSTNSUBURB TX
2012-11-01 501-404 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G LITTLEROCK AR
2012-11-01 501-420 1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 LITTLEROCK AR
2012-11-01 615-610 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F NASHVILLE TN
2012-11-01 763-600 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2012-11-01 952-666 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2012-10-31 203-680 0–9 XXXall 10 · 4 holders which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 NEW HAVEN CT
2012-10-31 225-407 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G BATONROUGE LA
2012-10-31 254-301 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G WACO TX
2012-10-31 331-216 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSWEGO IL
2012-10-31 337-443 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G LAFAYETTE LA
2012-10-31 361-402 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G C CHRISTI TX
2012-10-31 402-769 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G OMAHA NE
2012-10-31 431-800 not yet reported which blocks → Iristel Inc. 154E Winnipeg —
2012-10-31 504-434 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G NEWORLEANS LA
2012-10-31 520-373 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2012-10-31 587-744 not yet reported which blocks → Distributel 081E Fort Saskatchewan —
2012-10-31 587-745 not yet reported which blocks → Distributel 081E Sherwood Park —
2012-10-31 587-746 not yet reported which blocks → Distributel 081E Athabasca —
2012-10-31 618-501 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J GRANITE CY IL
2012-10-31 631-515 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C SHELTER IS NY
2012-10-31 701-715 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J FARGO ND
2012-10-31 778-553 not yet reported which blocks → TELUS Mobility 8301 Fort Nelson —
2012-10-31 803-717 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F SHAWAFBHTS SC
2012-10-31 832-760 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2012-10-31 862-305 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F DOVER NJ
2012-10-31 873-887 not yet reported which blocks → Fibernetics Corporation 464D Trois-Rivieres —
2012-10-30 226-450 not yet reported which blocks → Videotron Ltd. 383F Brantford —
2012-10-30 239-201 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 551G FORT MYERS FL
2012-10-30 541-213 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BEND OR
2012-10-30 618-221 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E BREESE IL
2012-10-30 708-315 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LA GRANGE IL
2012-10-30 814-616 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G ERIE PA
2012-10-30 850-405 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G TALLAHASSE FL
2012-10-29 267-559 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2012-10-29 352-609 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAVARES FL
2012-10-29 385-474 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MURRAY UT
2012-10-29 438-383 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2012-10-29 438-384 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2012-10-29 438-385 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2012-10-29 438-386 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2012-10-29 450-486 not yet reported which blocks → Videotron Ltd. 8306 St-Lambert —
2012-10-29 450-490 not yet reported which blocks → Videotron Ltd. 8306 Pont-Viau —
2012-10-29 450-527 not yet reported which blocks → Videotron Ltd. 8306 Beloeil —
2012-10-29 786-520 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2012-10-29 808-439 0–9 XXXall 10 · 6 holders which blocks → HAWAII DIALOGIX TELECOM, LLC 844F HONOLULU HI
2012-10-29 956-269 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F LAREDO TX
2012-10-28 315-728 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G SYRACUSE NY
2012-10-28 516-210 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN07 NY
2012-10-28 518-407 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G ALBANY NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.