NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
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
2021-10-11 931-350 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F COLUMBIA TN
2021-10-11 934-206 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D DEER PARK NY
2021-10-11 941-280 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E ENGLEWOOD FL
2021-10-08 209-880 0–9 XXXall 10 · 6 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J MANTECA CA
2021-10-08 225-462 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 DONALDSNVL LA
2021-10-08 305-429 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NORTH DADE FL
2021-10-08 305-449 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H KEYS FL
2021-10-08 305-701 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C NORTH DADE FL
2021-10-08 437-422 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-10-08 437-518 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-10-08 437-960 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-10-08 516-920 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN02 NY
2021-10-08 540-873 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAFFORD VA
2021-10-08 540-914 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FRONTROYAL VA
2021-10-08 561-759 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2021-10-08 561-764 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 WPALMBEACH FL
2021-10-08 561-765 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C BOCA RATON FL
2021-10-08 610-773 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D PHPHSBZN10 PA
2021-10-08 662-818 0XXX1XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 DUCK HILL MS
2021-10-08 727-746 0–9 XXXall 10 · 7 holders which blocks → CORETEL FLORIDA, INC. - FL 481F STPETERSBG FL
2021-10-08 813-896 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E PLANT CITY FL
2021-10-08 848-318 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 SPRINGLAKE NJ
2021-10-08 848-319 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 METUCHEN NJ
2021-10-08 862-384 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BLOOMFIELD NJ
2021-10-08 863-388 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J AVON PARK FL
2021-10-08 864-749 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON SC
2021-10-08 929-995 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.