NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2021-10-12 629-265 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F LAVERGNE TN
2021-10-12 682-362 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 GLENDALE TX
2021-10-12 725-705 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H INDIAN SPG NV
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
2021-10-12 727-436 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H HUDSON FL
2021-10-12 807-842 not yet reported which blocks → TELUS Mobility 8303 Kenora —
2021-10-12 825-975 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2021-10-12 825-977 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2021-10-12 863-306 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H HAINESCITY FL
2021-10-12 863-309 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H POLK CITY FL
2021-10-12 873-695 not yet reported which blocks → 9164-3122 Quebec inc 843D Lac-Megantic —
2021-10-12 904-558 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H KINGSLEYLK FL
2021-10-12 904-756 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H LAWTEY FL
2021-10-12 915-291 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 EL PASO TX
2021-10-12 941-282 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NORTH PORT FL
2021-10-12 941-283 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MYAKKA FL
2021-10-12 941-287 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H SARASOTA FL
2021-10-11 202-240 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSHNGTNZN1 DC
2021-10-11 202-571 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 WSHNGTNZN1 DC
2021-10-11 207-987 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 AUGUSTA ME
2021-10-11 213-575 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D LSAN DA 05 CA
2021-10-11 224-431 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 229-541 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VALDOSTA GA
2021-10-11 272-467 0–9 XXXall 10 · 7 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 MIDDLEBURG PA
2021-10-11 304-246 0–9 XXXall 10 · 4 holders which blocks → UNITED STATES CELLULAR - WV 6284 SUMMERSVL WV
2021-10-11 321-375 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 COCOA FL
2021-10-11 346-513 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2021-10-11 352-734 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BROOKSVL FL
2021-10-11 352-736 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 CRYSTALRIV FL
2021-10-11 447-214 not yet reported which blocks → COMPUTER TECHNIQUES, INC. - IL 197H FILLMORE IL
2021-10-11 470-846 0–9 XXXall 10 · 5 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2021-10-11 470-861 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2021-10-11 470-886 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2021-10-11 479-460 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 VAN BUREN AR
2021-10-11 501-489 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MALVERN AR
2021-10-11 520-598 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 CASAGRANDE AZ
2021-10-11 602-836 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ
2021-10-11 607-663 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H ONEONTA NY
2021-10-11 629-264 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NASHVILLE TN
2021-10-11 689-261 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 KISSIMMEE FL
2021-10-11 727-435 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 STPETERSBG FL
2021-10-11 762-769 0–9 XXXall 10 · 5 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 TOCCOA GA
2021-10-11 772-258 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 VERO BEACH FL
2021-10-11 858-325 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H SNDG LVTA CA
2021-10-11 872-293 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2021-10-11 872-294 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 878-242 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F NEW CASTLE PA
2021-10-11 928-463 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 PRESCOTT AZ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.