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
2021-06-23 620-552 0XXX1XXX2XXX3XXX4XXX · 5 holders which blocks → ONVOY, LLC - KS 205F CHASE KS
2021-06-23 667-328 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ESSEX MD
2021-06-23 667-329 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → TELNYX LLC 073H PARKTON MD
2021-06-23 712-612 1XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H E HARRISBG IA
2021-06-23 737-292 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C AUSTIN TX
2021-06-23 754-547 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C CORAL SPG FL
2021-06-23 775-474 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H BEATTY NV
2021-06-23 779-335 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELNYX LLC 073H ROCKFORD IL
2021-06-23 785-602 2XXX3XXX which blocks → ONVOY, LLC - KS 205F SO NAPONEE KS
2021-06-23 805-887 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → TELNYX LLC 073H SANMARGART CA
2021-06-23 830-340 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H SEGUIN TX
2021-06-23 831-271 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELNYX LLC 073H HOLLISTER CA
2021-06-23 838-255 0XXX1XXX2XXX3XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC- NY 384C TUPPERLAKE NY
2021-06-23 908-435 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 CLINTON NJ
2021-06-23 912-456 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H BRUNSWICK GA
2021-06-23 920-307 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - WI 225C WAUPUN WI
2021-06-23 939-318 0–9 XXXall 10 · 2 holders which blocks → LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2021-06-23 970-780 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H SO LARAMIE CO
2021-06-23 970-802 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H SOCHEYENNE CO
2021-06-22 220-214 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - OH 464C DANVL OH
2021-06-22 254-464 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C MOODY TX
2021-06-22 347-428 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN06 NY
2021-06-22 361-278 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J C CHRISTI TX
2021-06-22 440-698 0XXX3XXX5XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C NEWBURY OH
2021-06-22 440-738 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C VERMILION OH
2021-06-22 447-784 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SPRINGFLD IL
2021-06-22 447-785 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SPRINGFLD IL
2021-06-22 447-876 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DECATUR IL
2021-06-22 470-826 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2021-06-22 470-855 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2021-06-22 478-317 0XXX1XXX2XXX8XXX9XXX · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 HAWKINSVL GA
2021-06-22 548-622 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Grand Valley —
2021-06-22 561-363 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H WPALMBEACH FL
2021-06-22 612-464 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 478J TWINCITIES MN
2021-06-22 620-519 0XXX1XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E WALTON KS
2021-06-22 731-510 0XXX1XXX3XXX4XXX6XXX9XXX · 6 holders which blocks → ONVOY, LLC - TN 525E ADAMSVILLE TN
2021-06-22 731-710 0XXX1XXX3XXX9XXX · 4 holders which blocks → ONVOY, LLC - TN 525E HALLS TN
2021-06-22 731-770 1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TN 525E WHITEVILLE TN
2021-06-22 731-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TN 525E PARIS TN
2021-06-22 754-268 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2021-06-22 754-269 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2021-06-22 779-330 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NUSO, LLC 478J BELVIDERE IL
2021-06-22 786-790 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NORTH DADE FL
2021-06-22 856-496 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HADDONFLD NJ
2021-06-22 864-743 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BLUE RIDGE SC
2021-06-22 865-396 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2021-06-22 901-621 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VONAGE AMERICA LLC 197D WESTWHITEV TN
2021-06-22 901-625 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H COLLIERVL TN
2021-06-22 901-627 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TN 525E MOSCOW TN
2021-06-22 910-917 0XXX1XXX3XXX8XXX · 3 holders which blocks → TELNYX LLC 073H HAMLET NC

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.