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
2018-05-09 951-451 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D HEMT SNJC CA
2018-05-09 971-299 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F GOVENTCAMP OR
2018-05-09 984-422 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E FREMONT NC
2018-05-08 226-550 not yet reported which blocks → Execulink Telecom Inc. 8226 Simcoe —
2018-05-08 228-300 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MS 719E OCEAN SPG MS
2018-05-08 236-587 not yet reported which blocks → TELUS Mobility 8301 Quesnel —
2018-05-08 249-591 not yet reported which blocks → TELUS Mobility 8303 North Bay —
2018-05-08 318-653 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F HAYNESVL LA
2018-05-08 343-548 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2018-05-08 385-955 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
2018-05-08 424-412 not yet reported which blocks → SHELCOMM 0051 INGLEWOOD CA
2018-05-08 431-314 not yet reported which blocks → Fibernetics Corporation 464D Oakbank —
2018-05-08 431-315 not yet reported which blocks → Fibernetics Corporation 464D Portage La Prairie —
2018-05-08 442-289 not yet reported which blocks → SHELCOMM 0051 VICTORVL CA
2018-05-08 470-768 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H GAINESVL GA
2018-05-08 505-405 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NM 206F OJOCALINTE NM
2018-05-08 505-502 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → ONVOY, LLC - NM 206F CHIMAYO NM
2018-05-08 505-509 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - NM 206F DIXON NM
2018-05-08 518-806 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E MALONE NY
2018-05-08 573-910 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H FARMINGTON MO
2018-05-08 575-400 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F LINDRITH NM
2018-05-08 575-570 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - NM 206F CANJILON NM
2018-05-08 575-573 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CRLSBACRNS NM
2018-05-08 575-577 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - NM 206F EL RITO NM
2018-05-08 575-579 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - NM 206F HILLSBORO NM
2018-05-08 575-600 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - NM 206F LYBROOK NM
2018-05-08 575-900 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - NM 206F VALLECITOS NM
2018-05-08 619-310 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H SNDG SNDG CA
2018-05-08 639-833 not yet reported which blocks → SaskTel Mobility 9868 Green Lake —
2018-05-08 647-598 not yet reported which blocks → TELUS Integrated Communications 2782 Toronto —
2018-05-08 650-405 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2018-05-08 650-709 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H PALO ALTO CA
2018-05-08 657-326 not yet reported which blocks → SHELCOMM 0051 GARDEN GRV CA
2018-05-08 747-278 not yet reported which blocks → SHELCOMM 0051 NORTHRIDGE CA
2018-05-08 757-964 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J NWPTNWSZN2 VA
2018-05-08 762-289 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E FRANKLIN GA
2018-05-08 769-214 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E MORTON MS
2018-05-08 781-747 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DEDHAM MA
2018-05-08 782-233 not yet reported which blocks → TELUS Mobility 8303 New Glasgow —
2018-05-08 786-598 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2018-05-08 803-723 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F NEWBERRY SC
2018-05-08 825-994 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2018-05-08 848-266 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEASIDE PK NJ
2018-05-08 850-790 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C GLENDALE FL
2018-05-08 949-418 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H IRVINE CA
2018-05-08 972-626 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2018-05-08 980-449 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CLEVELAND NC
2018-05-08 980-655 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E STANLEY NC
2018-05-07 205-615 0–9 XXXall 10 · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 LEEDS AL
2018-05-07 312-815 0–9 XXXall 10 · 2 holders which blocks → AIRESPRING, INC. 996H CHICGOZN01 IL

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.