NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2010-02-25 226-749 not yet reported which blocks → Bell Mobility 6574 Kitchener-Waterloo —
2010-02-25 289-356 not yet reported which blocks → Bell Mobility 6574 Oshawa —
2010-02-25 347-504 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN05 NY
2010-02-25 403-805 not yet reported which blocks → Bell Mobility 6574 Calgary —
2010-02-25 641-465 not yet reported which blocks → GREENWAY COMMUNICATIONS L.L.C. - IA 860F KLEMME IA
2010-02-25 709-725 not yet reported which blocks → Bell Mobility Aliant 329A St. John's —
2010-02-25 715-240 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MILL CREEK WI
2010-02-25 715-303 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 STEVENS PT WI
2010-02-25 715-438 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 CHIPPEWFLS WI
2010-02-25 727-286 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J CLEARWATER FL
2010-02-25 780-667 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2010-02-25 819-230 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2010-02-25 856-288 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C CAMDEN NJ
2010-02-25 872-216 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 902-338 not yet reported which blocks → Bell Mobility Aliant 329A Antigonish —
2010-02-25 920-557 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 BEAVER DAM WI
2010-02-25 954-406 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E FTLAUDERDL FL
2010-02-24 207-656 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J RICHMOND ME
2010-02-24 212-470 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 NWYRCYZN01 NY
2010-02-24 269-442 0–9 XXXall 10 · 5 holders which blocks → MEI TELECOM, INC. - MI 194H MARTIN MI
2010-02-24 347-816 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2010-02-24 512-522 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2010-02-24 619-924 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG SNDG CA
2010-02-24 631-505 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E LINDENHST NY
2010-02-24 678-536 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2010-02-24 813-445 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2010-02-24 949-505 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SADLBK VLY CA
2010-02-23 305-800 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J KEYS FL
2010-02-23 308-313 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → MOBIUS COMMUNICATIONS COMPANY - NE 9764 ALLIANCE NE
2010-02-23 443-873 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MD 876D BALTIMORE MD
2010-02-23 478-559 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K EASTMAN GA
2010-02-23 509-795 0–9 XXXall 10 · 6 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SPOKANE WA
2010-02-23 512-574 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2010-02-23 570-534 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STROUDSBG PA
2010-02-23 608-382 not yet reported which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E ADAMS WI
2010-02-23 657-229 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SANTA ANA CA
2010-02-23 657-549 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E ANAHEIM CA
2010-02-23 712-415 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY OF IOWA, LLC - IA 751F EMMETSBURG IA
2010-02-23 740-688 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 JACKSON OH
2010-02-23 801-882 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 KAYSVILLE UT
2010-02-23 802-424 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J ST JOHNSBY VT
2010-02-23 857-215 0–9 XXXwhole prefix which blocks → VERIZON NEW ENGLAND INC. 9102 BROOKLINE MA
2010-02-23 931-262 0–9 XXXall 10 · 2 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 WINCHESTER TN
2010-02-23 937-709 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 BELLBROOK OH
2010-02-22 214-531 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2010-02-22 323-744 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2010-02-22 408-637 0–9 XXXall 10 · 6 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CAMPBELL CA
2010-02-22 408-641 0–9 XXXall 10 · 2 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNJS WEST CA
2010-02-22 510-470 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E HAYWARD CA
2010-02-22 510-730 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RICHMOND CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.