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
2021-11-18 662-853 4XXX7XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 SMITHVILLE MS
2021-11-18 720-871 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LONGMONT CO
2021-11-18 754-280 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HOLLYWOOD FL
2021-11-18 762-308 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 LAGRANGE GA
2021-11-18 774-499 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEWTR MA
2021-11-18 817-883 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2021-11-18 828-647 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CANTON NC
2021-11-18 845-903 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 MONTICELLO NY
2021-11-18 845-906 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NYACK NY
2021-11-18 858-330 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 RNCHOPNQTS CA
2021-11-18 862-375 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F BUTLER NJ
2021-11-18 864-759 0XXX1XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BELTON SC
2021-11-18 864-765 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F CENTRAL SC
2021-11-18 864-769 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PELZER SC
2021-11-18 864-771 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PENDLETON SC
2021-11-18 908-539 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F CHESTER NJ
2021-11-18 912-606 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 VIDALIA GA
2021-11-18 914-531 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 MOUNTKISCO NY
2021-11-18 934-225 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E SHOREHAM NY
2021-11-18 939-326 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2021-11-18 951-604 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 HEMT SNJC CA
2021-11-18 984-313 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E ZEBULON NC
2021-11-17 213-778 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H LSAN DA 01 CA
2021-11-17 214-898 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H CELINA TX
2021-11-17 224-439 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
2021-11-17 234-587 8XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H WAYLAND OH
2021-11-17 240-886 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2021-11-17 279-901 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H ELK GROVE CA
2021-11-17 346-525 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRING TX
2021-11-17 409-270 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HTCHCCKSNF TX
2021-11-17 445-225 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2021-11-17 509-986 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ELLENSBURG WA
2021-11-17 559-902 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H SANGER CA
2021-11-17 575-280 0XXX1XXX2XXX3XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F QUESTA NM
2021-11-17 657-534 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ORANGE CA
2021-11-17 667-368 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ELKTON MD
2021-11-17 667-369 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CATONSVL MD
2021-11-17 713-810 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TOMBALL TX
2021-11-17 720-901 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H DENVER CO
2021-11-17 743-238 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2021-11-17 802-416 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VT 005F BRATTLEBO VT
2021-11-17 838-251 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SCHENCTADY NY
2021-11-17 845-898 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MONTICELLO NY
2021-11-17 901-658 0–9 XXXwhole prefix which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-11-17 931-633 2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F LYLES TN
2021-11-17 945-236 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ROCKWALL TX
2021-11-17 951-598 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ARLINGTON CA
2021-11-17 951-904 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-11-16 220-901 9XXX which blocks → ONVOY SPECTRUM, LLC 624H GUYSVILLE OH
2021-11-16 220-902 2XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BARLOW OH

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.