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
2021-02-04 226-712 not yet reported which blocks → TekSavvy Solutions Inc 548H New Hamburg —
2021-02-04 226-713 not yet reported which blocks → TekSavvy Solutions Inc 548H Plattsville —
2021-02-04 226-714 not yet reported which blocks → TekSavvy Solutions Inc 548H Preston —
2021-02-04 226-715 not yet reported which blocks → TekSavvy Solutions Inc 548H St. Clements —
2021-02-04 226-723 not yet reported which blocks → TekSavvy Solutions Inc 548H St. Jacobs —
2021-02-04 226-729 not yet reported which blocks → TekSavvy Solutions Inc 548H Wellesley —
2021-02-04 226-761 not yet reported which blocks → TekSavvy Solutions Inc 548H Elmira —
2021-02-04 239-359 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NAPLES FL
2021-02-04 279-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SCRM NORTH CA
2021-02-04 314-912 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MO 093F ST LOUIS MO
2021-02-04 316-376 0–9 XXXall 10 · 4 holders which blocks → STRATUS NETWORKS 495J WICHITA KS
2021-02-04 385-371 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 478J SALT LAKE UT
2021-02-04 417-530 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MO 093F SPRINGFLD MO
2021-02-04 463-317 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H INDIANAPLS IN
2021-02-04 475-474 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C TRUMBULL CT
2021-02-04 561-780 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H WPALMBEACH FL
2021-02-04 561-980 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BOCA RATON FL
2021-02-04 602-830 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2021-02-04 640-866 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J EGG HARBOR NJ
2021-02-04 657-487 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ANA CA
2021-02-04 681-310 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H INWOOD WV
2021-02-04 725-720 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H SEARCHLIHT NV
2021-02-04 754-946 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H FTLAUDERDL FL
2021-02-04 772-776 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H STUART FL
2021-02-04 786-954 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H PERRINE FL
2021-02-04 816-819 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MO 093F KANSASCITY MO
2021-02-04 848-437 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWBRNSWCK NJ
2021-02-04 863-348 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H WINTER HVN FL
2021-02-04 863-789 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H POLK CITY FL
2021-02-04 872-877 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2021-02-04 878-235 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H ROCHESTER PA
2021-02-04 914-904 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WSCHSTZN01 NY
2021-02-04 929-949 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NWYRCYZN14 NY
2021-02-04 934-202 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 ST JAMES NY
2021-02-04 941-688 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CAPE HAZE FL
2021-02-04 954-890 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H POMPANOBCH FL
2021-02-03 213-980 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H LSAN DA 04 CA
2021-02-03 223-259 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J HARISBGZN1 PA
2021-02-03 226-740 not yet reported which blocks → TekSavvy Solutions Inc 548H Ayr —
2021-02-03 226-745 not yet reported which blocks → TekSavvy Solutions Inc 548H Baden —
2021-02-03 226-754 not yet reported which blocks → TekSavvy Solutions Inc 548H Breslau —
2021-02-03 226-760 not yet reported which blocks → TekSavvy Solutions Inc 548H Drayton —
2021-02-03 251-448 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H MCCULLOUGH AL
2021-02-03 251-449 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FINCHBURG AL
2021-02-03 252-440 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → ONVOY, LLC - NC 638E WOODLAND NC
2021-02-03 302-558 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E SEAFORD DE
2021-02-03 308-314 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E GRAND IS NE
2021-02-03 308-378 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H LEXINGTON NE
2021-02-03 314-886 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MO 093F CREVECOEUR MO
2021-02-03 346-660 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BAYTOWN TX

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.