NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2021-01-29 904-618 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2021-01-29 914-928 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C BEDFORDVLG NY
2021-01-29 934-943 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC- NY 384C E FIRE IS NY
2021-01-29 934-944 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC- NY 384C FIREISLAND NY
2021-01-29 934-945 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C HAMPTNBAYS NY
2021-01-29 934-947 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C HUNTINGTON NY
2021-01-29 934-948 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C MIDLAND NY
2021-01-29 934-949 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C RONKONKOMA NY
2021-01-29 949-641 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 IRVINE CA
2021-01-29 985-344 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → ONVOY, LLC - LA 749E MT HERMON LA
2021-01-29 985-404 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → ONVOY, LLC - LA 749E KENTWOOD LA
2021-01-29 985-589 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E CHACKBAY LA
2021-01-29 985-621 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E INDEPNDNCE LA
2021-01-28 213-775 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H LSAN DA 01 CA
2021-01-28 223-249 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E MILLERSVL PA
2021-01-28 223-250 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E WAYNESBORO PA
2021-01-28 223-251 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN2 PA
2021-01-28 223-252 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - PA 547E MCALISTRVL PA
2021-01-28 225-525 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E ROUGON LA
2021-01-28 252-372 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - NC 638E HAMILTON NC
2021-01-28 260-279 0–9 XXXall 10 · 3 holders which blocks → STRATUS NETWORKS 495J FORT WAYNE IN
2021-01-28 269-347 0XXX4XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K PINE LAKE MI
2021-01-28 269-486 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BENTON HBR MI
2021-01-28 272-250 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J SCRANTON PA
2021-01-28 272-258 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E GIRARDVL PA
2021-01-28 279-217 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C SO PLACER CA
2021-01-28 313-476 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J DETROITZN6 MI
2021-01-28 321-357 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TITUSVILLE FL
2021-01-28 424-524 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H MALIBU CA
2021-01-28 435-302 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAMAS UT
2021-01-28 470-754 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA SO GA
2021-01-28 470-832 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2021-01-28 507-907 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MN 184D WELCOME MN
2021-01-28 507-997 0XXX1XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - MN 184D TRIMONT MN
2021-01-28 509-609 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J SPOKANE WA
2021-01-28 517-328 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → IP HORIZON LLC 515J LANSING MI
2021-01-28 616-387 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J GRAND RPDS MI
2021-01-28 657-482 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2021-01-28 657-483 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2021-01-28 657-484 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2021-01-28 681-618 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WV 449F WHELNGZON3 WV
2021-01-28 681-660 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WV 449F PRKRSBGZN1 WV
2021-01-28 701-510 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → STRATUS NETWORKS 495J GRAFTON ND
2021-01-28 779-788 0XXX1XXX2XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H PECATONICA IL
2021-01-28 814-960 1XXX2XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → IP HORIZON LLC 515J ERIE PA
2021-01-28 825-979 not yet reported which blocks → TELUS Mobility 8301 Banff —
2021-01-28 848-844 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C RED BANK NJ
2021-01-28 862-660 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C NUTLEY NJ
2021-01-28 878-226 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E WASHINGTON PA
2021-01-28 878-232 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E ELLWOOD CY PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.