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
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
2018-05-07 346-338 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F VLY LODGE TX
2018-05-07 470-887 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CONCORD GA
2018-05-07 470-922 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NW GA
2018-05-07 505-605 2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H TRUCHAS NM
2018-05-07 505-805 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - NM 206F VELARDE NM
2018-05-07 757-937 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J NRFOLKZON2 VA
2018-05-07 825-237 not yet reported which blocks → Distributel 081E Girouxville —
2018-05-07 825-238 not yet reported which blocks → Distributel 081E Grimshaw —
2018-05-07 825-239 not yet reported which blocks → Distributel 081E Grouard —
2018-05-07 825-240 not yet reported which blocks → Distributel 081E High Prairie —
2018-05-07 825-241 not yet reported which blocks → Distributel 081E Hines Creek —
2018-05-07 825-242 not yet reported which blocks → Distributel 081E Jean D'or Prairie —
2018-05-07 825-243 not yet reported which blocks → Distributel 081E Joussard —
2018-05-07 825-244 not yet reported which blocks → Distributel 081E Keg River —
2018-05-07 825-245 not yet reported which blocks → Distributel 081E Kinuso —
2018-05-07 825-246 not yet reported which blocks → Distributel 081E La Crete —
2018-05-07 825-247 not yet reported which blocks → Distributel 081E Little Buffalo Lake —
2018-05-07 825-248 not yet reported which blocks → Distributel 081E Manning —
2018-05-07 825-249 not yet reported which blocks → Distributel 081E McLennan —
2018-05-07 825-259 not yet reported which blocks → Distributel 081E Meander River —
2018-05-07 825-260 not yet reported which blocks → Distributel 081E Nampa —
2018-05-07 825-261 not yet reported which blocks → Distributel 081E Peerless Lake —

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.