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
2021-09-01 240-819 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MD 876D WILLIAMSPT MD
2021-09-01 240-827 2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - MD 876D LONACONING MD
2021-09-01 240-836 2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - MD 876D MT SAVAGE MD
2021-09-01 251-364 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H JACKSON AL
2021-09-01 251-365 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CITRONELLE AL
2021-09-01 251-372 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BELLEFONTN AL
2021-09-01 269-314 3XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 THREERIVRS MI
2021-09-01 309-891 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KNOXVILLE IL
2021-09-01 316-900 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H CHENEY KS
2021-09-01 334-824 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E DOTHAN AL
2021-09-01 334-839 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E WETUMPKA AL
2021-09-01 365-421 not yet reported which blocks → Beanfield Technologies Inc. 575G South Pickering —
2021-09-01 365-422 not yet reported which blocks → Beanfield Technologies Inc. 575G Whitby —
2021-09-01 365-423 not yet reported which blocks → Beanfield Technologies Inc. 575G Newtonville —
2021-09-01 365-424 not yet reported which blocks → Beanfield Technologies Inc. 575G Orono —
2021-09-01 365-616 not yet reported which blocks → Beanfield Technologies Inc. 575G Hamilton —
2021-09-01 365-774 not yet reported which blocks → Beanfield Technologies Inc. 575G Oshawa —
2021-09-01 385-417 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-09-01 385-431 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-09-01 386-346 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PALM COAST FL
2021-09-01 423-691 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TN 525E ATHENS TN
2021-09-01 423-692 0XXX1XXX · 2 holders which blocks → SKYBEST COMMUNICATIONS, INC. - TN 081J BUTLER TN
2021-09-01 423-759 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TN 525E MORRISTOWN TN
2021-09-01 432-846 0XXX1XXX2XXX4XXX · 4 holders which blocks → FRACTEL, LLC 965H TOYAH TX
2021-09-01 470-843 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA NE GA
2021-09-01 470-915 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BUFORD GA
2021-09-01 470-921 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2021-09-01 470-927 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2021-09-01 575-284 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SILVERCITY NM
2021-09-01 612-471 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2021-09-01 612-472 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2021-09-01 616-349 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2021-09-01 660-539 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLINTON MO
2021-09-01 667-338 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D CROFTON MD
2021-09-01 667-339 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MD 876D SYKESVILLE MD
2021-09-01 667-340 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MD 876D CHURCHVL MD
2021-09-01 667-341 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D DELMAR MD
2021-09-01 667-342 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MD 876D PRESTON MD
2021-09-01 667-348 2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MD 876D RIDGELY MD
2021-09-01 667-349 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MD 876D STILL POND MD
2021-09-01 667-350 0XXX1XXX2XXX3XXX7XXX · 4 holders which blocks → ONVOY, LLC - MD 876D WINGATE MD
2021-09-01 667-380 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MD 876D ANNAPOLIS MD
2021-09-01 667-403 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D TOWSON MD
2021-09-01 716-520 0–9 XXXall 10 · 2 holders which blocks → PEERING HUB, INC. - NY 818H BUFFALO NY
2021-09-01 742-204 not yet reported which blocks → Beanfield Technologies Inc. 575G Hampton —
2021-09-01 742-205 not yet reported which blocks → Beanfield Technologies Inc. 575G Newcastle —
2021-09-01 742-206 not yet reported which blocks → Beanfield Technologies Inc. 575G Port Perry —
2021-09-01 825-754 not yet reported which blocks → Iristel Inc. 154E Stettler —
2021-09-01 828-590 0–9 XXXall 10 · 7 holders which blocks → CSC VOICE, LLC 612K FAIRVIEW NC
2021-09-01 828-642 0–9 XXXall 10 · 6 holders which blocks → CSC VOICE, LLC 612K HENDERSNVL 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.