NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 725
ONVOY, LLC - NV 46
T-MOBILE USA, INC. 30
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 21
NEW CINGULAR WIRELESS PCS, LLC 16
FRACTEL, LLC 16
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
2021-10-12 725-715 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H JEAN NV
2021-10-12 725-745 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H MTCHARLETN NV
2021-10-12 725-765 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NELSON NV
2021-09-28 725-772 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H LAS VEGAS NV
2021-09-16 725-260 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2021-08-31 725-259 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2021-08-30 725-258 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F LAS VEGAS NV
2021-08-24 725-299 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SEARCHLIHT NV
2021-08-18 725-256 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2021-08-10 725-433 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2021-07-28 725-587 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LAUGHLIN NV
2021-07-22 725-254 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2021-07-16 725-253 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 MESQUITE NV
2021-07-14 725-252 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LAUGHLIN NV
2021-07-07 725-249 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAS VEGAS NV
2021-07-07 725-250 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NV 4805 LAS VEGAS NV
2021-06-07 725-334 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2021-05-14 725-248 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2021-05-10 725-247 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2021-05-04 725-895 0–9 XXXall 10 · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J LAS VEGAS NV
2021-04-17 725-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2021-04-13 725-599 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LAS VEGAS NV
2021-04-13 725-699 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SANDY VLY NV
2021-03-11 725-246 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LAS VEGAS NV
2021-03-04 725-245 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NELSON NV
2021-03-04 725-543 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J INDIAN SPG NV
2021-02-23 725-288 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LAUGHLIN NV
2021-02-09 725-755 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - NV 029F JEAN NV
2021-02-04 725-720 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H SEARCHLIHT NV
2021-01-12 725-577 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H LAS VEGAS NV
2021-01-11 725-243 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2020-12-28 725-242 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2020-12-23 725-567 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MTCHARLETN NV
2020-10-28 725-241 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 478J LAS VEGAS NV
2020-10-23 725-240 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAS VEGAS NV
2020-10-21 725-255 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NV 029F SANDY VLY NV
2020-10-02 725-239 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D LAS VEGAS NV
2020-09-28 725-238 0–9 XXXall 10 · 4 holders which blocks → NOS COMMUNICATIONS, INC. - NV 030J LAS VEGAS NV
2020-09-14 725-257 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2020-07-29 725-899 6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H COYOTE SPG NV
2020-07-29 725-933 3XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H SPIRIT MT NV
2020-07-13 725-237 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F MTCHARLETN NV
2020-07-09 725-277 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LAS VEGAS NV
2020-07-09 725-345 2XXX4XXX5XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H GLENDALE NV
2020-07-09 725-356 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H JEAN NV
2020-07-06 725-236 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2020-05-11 725-234 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F INDIAN SPG NV
2020-05-07 725-373 0–9 XXXall 10 · 9 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAS VEGAS NV
2020-04-28 725-233 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAS VEGAS NV
2020-03-31 725-232 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J LAS VEGAS NV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.