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
2018-05-07 346-338 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 —
2018-05-07 825-262 not yet reported which blocks → Distributel 081E Rainbow Lake —
2018-05-07 825-263 not yet reported which blocks → Distributel 081E Red Earth —
2018-05-07 825-264 not yet reported which blocks → Distributel 081E Smith —
2018-05-07 825-265 not yet reported which blocks → Distributel 081E Wabasca —
2018-05-07 825-266 not yet reported which blocks → Distributel 081E Whitelaw —
2018-05-07 825-267 not yet reported which blocks → Distributel 081E Widewater —
2018-05-07 825-268 not yet reported which blocks → Distributel 081E Worsley —
2018-05-07 825-269 not yet reported which blocks → Distributel 081E Zama —
2018-05-07 864-531 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOUNTANINN SC
2018-05-07 908-530 0–9 XXXall 10 · 7 holders which blocks → AIRESPRING, INC. 996H SOMERVILLE NJ
2018-05-07 912-741 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E JOHNSONCOR GA
2018-05-04 579-903 not yet reported which blocks → Distributel 083E Rigaud —
2018-05-04 579-904 not yet reported which blocks → Distributel 083E Ste-Marthe —
2018-05-04 579-906 not yet reported which blocks → Distributel 083E Ste-Justine-de-Newton —
2018-05-04 579-907 not yet reported which blocks → Distributel 083E St-Clet —
2018-05-04 579-909 not yet reported which blocks → Distributel 083E St-Polycarpe —
2018-05-04 579-912 not yet reported which blocks → Distributel 083E Ormstown —
2018-05-04 579-915 not yet reported which blocks → Distributel 083E Riviere-Beaudette —
2018-05-04 615-488 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F ADMSCDARHL TN
2018-05-04 737-235 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-04 803-440 0–9 XXXall 10 · 3 holders which blocks → HARGRAY, INC. - SC 5385 COLUMBIA SC
2018-05-04 825-224 not yet reported which blocks → Distributel 081E Assumption —
2018-05-04 825-225 not yet reported which blocks → Distributel 081E Berwyn —
2018-05-04 825-226 not yet reported which blocks → Distributel 081E Brownvale —
2018-05-04 825-227 not yet reported which blocks → Distributel 081E Chipewyan Lake —
2018-05-04 825-228 not yet reported which blocks → Distributel 081E Dixonville —
2018-05-04 825-229 not yet reported which blocks → Distributel 081E Donnelly —
2018-05-04 825-230 not yet reported which blocks → Distributel 081E Eaglesham —

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.