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
2014-05-23 780-306 not yet reported which blocks → Distributel 081E Edmonton —
2014-05-23 781-877 0XXX1XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEEDHAM MA
2014-05-23 818-423 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2014-05-23 832-966 0–9 XXXall 10 · 8 holders which blocks → CSC VOICE, LLC 612K CLEVELAND TX
2014-05-23 925-490 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2014-05-23 951-394 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RIVERSIDE CA
2014-05-22 240-901 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LA PLATA MD
2014-05-22 413-316 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2014-05-22 415-851 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-05-22 424-352 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-22 470-395 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J ATLANTA NE GA
2014-05-22 475-289 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2014-05-22 475-355 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2014-05-22 612-361 0–9 XXXall 10 · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 4139 TWINCITIES MN
2014-05-22 864-571 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F WESTMINSTR SC
2014-05-21 225-470 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WH CASTLE LA
2014-05-21 440-464 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2014-05-21 505-339 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GALLUP NM
2014-05-21 709-519 not yet reported which blocks → Bragg Communications Inc. 4878 St. Bride's —
2014-05-21 709-560 not yet reported which blocks → Bragg Communications Inc. 4878 Portugal Cove —
2014-05-21 709-577 not yet reported which blocks → Bragg Communications Inc. 4878 Torbay —
2014-05-21 709-578 not yet reported which blocks → Bragg Communications Inc. 4878 Mount Carmel —
2014-05-21 709-620 not yet reported which blocks → Bragg Communications Inc. 4878 Old Perlican —
2014-05-21 774-507 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E MEDWAY MA
2014-05-21 864-774 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F WILLIAMSTN SC
2014-05-21 978-650 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K PEPPERELL MA
2014-05-20 234-309 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2014-05-20 234-325 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2014-05-20 440-451 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLCREST OH
2014-05-20 440-495 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 VICTORY OH
2014-05-20 505-302 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F ALBUQURQUE NM
2014-05-20 614-909 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2014-05-20 614-910 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GAHANNA OH
2014-05-20 762-994 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J AUGUSTA GA
2014-05-19 231-265 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CORAL MI
2014-05-19 337-516 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2014-05-19 405-531 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F EDMOND OK
2014-05-19 469-551 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BARDWELL TX
2014-05-19 505-357 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F ALBUQURQUE NM
2014-05-19 505-437 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F ALBUQURQUE NM
2014-05-19 551-224 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C FAIR LAWN NJ
2014-05-19 707-640 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J DIXON CA
2014-05-19 720-476 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2014-05-19 828-571 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E SWANNANOA NC
2014-05-19 845-581 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NORTHSALEM NY
2014-05-19 910-537 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E ST PAULS NC
2014-05-19 910-634 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E WHISPEPINS NC
2014-05-19 937-915 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LAURA OH
2014-05-19 956-777 0–9 XXXall 10 · 3 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D MCALLEN TX
2014-05-19 970-536 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D NEW CASTLE CO

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.