NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2019-01-24 346-380 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2019-01-24 346-381 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F HSTNSUBURB TX
2019-01-24 346-382 0–9 XXXall 10 · 6 holders which blocks → VOIP INNOVATIONS, LLC 597F SPRING TX
2019-01-24 385-500 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SALT LAKE UT
2019-01-24 385-600 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H OGDEN UT
2019-01-24 435-666 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PARK CITY UT
2019-01-24 469-598 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F FRISCO TX
2019-01-24 561-437 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F WPALMBEACH FL
2019-01-24 580-800 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BLAIR OK
2019-01-24 616-800 0XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H JAMESTOWN MI
2019-01-24 616-816 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GRAND RPDS MI
2019-01-24 640-444 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ATLNTIC CY NJ
2019-01-24 640-999 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NEW EGYPT NJ
2019-01-24 682-284 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F ARLINGTON TX
2019-01-24 743-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H GREENSBORO NC
2019-01-24 743-900 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WINSTN SAL NC
2019-01-24 754-237 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F HOLLYWOOD FL
2019-01-24 786-648 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F NORTH DADE FL
2019-01-24 820-666 0XXX2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H SNLUSOBSPO CA
2019-01-24 856-444 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H MOORESTOWN NJ
2019-01-24 859-500 0–9 XXXall 10 · 2 holders which blocks → INVOXIO INCORPORATED 158H COVINGTON KY
2019-01-24 872-245 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F CHICGOZN04 IL
2019-01-24 901-446 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F COLLIERVL TN
2019-01-24 929-506 0–9 XXXall 10 · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F NWYRCYZN03 NY
2019-01-24 929-630 0–9 XXXall 10 · 6 holders which blocks → VOIP INNOVATIONS, LLC 597F NWYRCYZN07 NY
2019-01-24 954-669 0–9 XXXall 10 · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F FTLAUDERDL FL
2019-01-23 206-530 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 SEATTLE WA
2019-01-23 279-222 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SCRM MAIN CA
2019-01-23 279-800 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ELK GROVE CA
2019-01-23 279-900 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H RSVL MAIN CA
2019-01-23 346-379 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2019-01-23 435-264 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E NAT BRIDGE UT
2019-01-23 435-269 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 2 holders which blocks → ONVOY, LLC - UT 871E BLUFF UT
2019-01-23 435-280 0XXX2XXX4XXX8XXX · 2 holders which blocks → ONVOY, LLC - UT 871E MEXICANHAT UT
2019-01-23 435-284 3XXX4XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - UT 871E KANOSH UT
2019-01-23 435-325 2XXX3XXX4XXX5XXX8XXX which blocks → ONVOY, LLC - UT 871E MEADOW UT
2019-01-23 435-337 2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - UT 871E LAKEPOWELL UT
2019-01-23 435-344 0XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → ONVOY, LLC - UT 871E LA SAL UT
2019-01-23 435-345 4XXX5XXX6XXX which blocks → ONVOY, LLC - UT 871E THOMPSON UT
2019-01-23 435-432 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - UT 871E PROMONTORY UT
2019-01-23 435-441 1XXX2XXX3XXX4XXX5XXX which blocks → ONVOY, LLC - UT 871E HOLDEN UT
2019-01-23 435-495 2XXX4XXX5XXX which blocks → ONVOY, LLC - UT 871E OAK CITY UT
2019-01-23 469-597 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2019-01-23 505-370 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F LAS VEGAS NM
2019-01-23 517-428 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FOWLERVL MI
2019-01-23 726-222 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2019-01-23 820-222 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CAMARILLO CA
2019-01-23 820-333 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H THOUSAOAKS CA
2019-01-22 207-800 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PORTLAND ME
2019-01-22 207-900 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H OLDORCHBCH ME

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.