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
2020-06-22 475-273 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-06-22 623-632 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H PHOENIX AZ
2020-06-22 830-600 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GRANITSHLS TX
2020-06-22 864-589 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 UNION SC
2020-06-22 940-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LAKEDALLAS TX
2020-06-19 276-465 0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H BURKESGRDN VA
2020-06-19 434-345 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ALTAVISTA VA
2020-06-19 434-900 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H HALIFAX VA
2020-06-19 602-704 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2020-06-19 623-257 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2020-06-19 639-295 not yet reported which blocks → SaskTel Mobility 9868 Saskatoon —
2020-06-19 639-532 not yet reported which blocks → SaskTel Mobility 9868 Regina —
2020-06-19 672-986 not yet reported which blocks → TELUS Mobility 8301 Kelowna —
2020-06-19 713-902 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SUGAR LAND TX
2020-06-19 720-703 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 478J DENVER CO
2020-06-19 757-844 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NRFOLKZON1 VA
2020-06-19 786-321 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J MIAMI FL
2020-06-19 813-212 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J TAMPACEN FL
2020-06-19 850-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TALLAHASSE FL
2020-06-19 904-582 0–9 XXXall 10 · 4 holders which blocks → 1ST POINT COMMUNICATIONS, LLC 489J FERNADNBCH FL
2020-06-19 904-585 0–9 XXXall 10 · 4 holders which blocks → 1ST POINT COMMUNICATIONS, LLC 489J KINGSLEYLK FL
2020-06-19 904-590 0–9 XXXall 10 · 3 holders which blocks → 1ST POINT COMMUNICATIONS, LLC 489J LAWTEY FL
2020-06-19 904-593 0–9 XXXall 10 · 4 holders which blocks → 1ST POINT COMMUNICATIONS, LLC 489J MAXVILLE FL
2020-06-19 986-234 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PIERCE ID
2020-06-19 986-300 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H BAYVIEW ID
2020-06-19 986-345 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H SPIRITLAKE ID
2020-06-19 986-500 0XXX1XXX2XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H DEARY ID
2020-06-19 986-900 0XXX9XXX which blocks → FRACTEL, LLC 965H POWELL ID
2020-06-18 205-984 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - AL 476H EUTAW AL
2020-06-18 216-677 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H CLEVELAND OH
2020-06-18 226-871 not yet reported which blocks → TELUS Integrated Communications 2782 Sarnia —
2020-06-18 236-461 not yet reported which blocks → TELUS 8086 Whonnock —
2020-06-18 346-667 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H KATY TX
2020-06-18 361-766 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ALICE TX
2020-06-18 386-600 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PALATKA FL
2020-06-18 502-402 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 SULPHUR KY
2020-06-18 659-201 0–9 XXXall 10 · 3 holders which blocks → AIRUS, INC. - AL 476H WARRIOR AL
2020-06-18 737-269 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2020-06-18 737-377 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H AUSTIN TX
2020-06-18 737-667 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GEORGETOWN TX
2020-06-18 804-688 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H RICHMOND VA
2020-06-18 819-368 not yet reported which blocks → Cooptel 818D Notre-Dame-du-Bon-Conseil —
2020-06-18 825-707 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-06-18 909-830 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D CLAREMONT CA
2020-06-18 956-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MISSION TX
2020-06-18 959-881 0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C NIANTIC CT
2020-06-18 971-379 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PORTLAND OR
2020-06-17 307-292 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J CHEYENNE WY
2020-06-17 320-777 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SAUKCENTRE MN
2020-06-17 320-977 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H HOLDINGFD MN

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.