NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2016-03-09 318-667 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E STERLINGTN LA
2016-03-09 318-712 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E LECOMPTE LA
2016-03-09 318-714 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E OAK GROVE LA
2016-03-09 318-718 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E BENTON LA
2016-03-09 318-770 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E KEATCHIE LA
2016-03-09 318-772 0XXX1XXX2XXX3XXX7XXX8XXX which blocks → ONVOY, LLC - LA 749E DOYLINE LA
2016-03-09 323-616 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2016-03-09 423-205 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TN 525E ETOWAH TN
2016-03-09 430-304 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → ONVOY, LLC - TX 903C POINT TX
2016-03-09 430-305 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C TAWAKONI TX
2016-03-09 430-541 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C WEAVER TX
2016-03-09 438-304 not yet reported which blocks → Bell Mobility 6574 Montreal —
2016-03-09 469-931 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2016-03-09 518-616 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ALBANY NY
2016-03-09 518-666 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E STREGISFLS NY
2016-03-09 518-990 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E MOIRA NY
2016-03-09 520-585 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TUCSON AZ
2016-03-09 551-203 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 JERSEYCITY NJ
2016-03-09 585-304 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E OAKFIELD NY
2016-03-09 609-783 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ATLNTIC CY NJ
2016-03-09 623-226 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ
2016-03-09 639-741 not yet reported which blocks → Bell Mobility 6574 Big River —
2016-03-09 639-742 not yet reported which blocks → Bell Mobility 6574 Melfort —
2016-03-09 639-743 not yet reported which blocks → Bell Mobility 6574 La Ronge —
2016-03-09 639-744 not yet reported which blocks → Bell Mobility 6574 Carrot River —
2016-03-09 639-745 not yet reported which blocks → Bell Mobility 6574 Hudson Bay —
2016-03-09 639-746 not yet reported which blocks → Bell Mobility 6574 Nipawin —
2016-03-09 639-747 not yet reported which blocks → Bell Mobility 6574 Shellbrook —
2016-03-09 639-748 not yet reported which blocks → Bell Mobility 6574 Spiritwood —
2016-03-09 639-749 not yet reported which blocks → Bell Mobility 6574 Tisdale —
2016-03-09 662-920 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MS 719E CRENSHAW MS
2016-03-09 669-203 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 CAMPBELL CA
2016-03-09 707-610 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C CLOVERDALE CA
2016-03-09 716-321 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SO DAYTON NY
2016-03-09 716-641 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E MACHIAS NY
2016-03-09 774-335 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - MA 892D MILLIS MA
2016-03-09 774-347 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MA 892D NOBROOKFLD MA
2016-03-09 774-484 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D BELLINGHAM MA
2016-03-09 774-561 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D ORLEANS MA
2016-03-09 862-774 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - NJ 637C POMPTONLKS NJ
2016-03-09 864-713 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - SC 548E HONEA PATH SC
2016-03-09 864-732 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E SALEM SC
2016-03-09 864-740 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E PIEDMONT SC
2016-03-09 970-659 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PEERLESS NETWORK OF COLORADO, LLC - CO 278F HILLROSE CO
2016-03-08 205-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E BIRMINGHAM AL
2016-03-08 205-997 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BESSEMER AL
2016-03-08 206-401 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHMNDBCH WA
2016-03-08 224-263 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C HUNTLEY IL
2016-03-08 262-205 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C WILLIAMSBY WI
2016-03-08 318-409 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E MARKSVILLE LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.