NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

352 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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2022-07-15 713-925 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H HOUSTON TX
2022-07-15 720-659 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D DENVER CO
2022-07-15 725-327 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H LAS VEGAS NV
2022-07-15 726-727 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H SANANTONIO TX
2022-07-15 770-202 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA SO GA
2022-07-15 830-259 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J FLORESVL TX
2022-07-15 848-330 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 SPRINGLAKE NJ
2022-07-15 929-629 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN15 NY
2022-07-15 929-631 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN12 NY
2022-07-15 929-632 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN11 NY
2022-07-15 929-634 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN09 NY
2022-07-15 929-635 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN08 NY
2022-07-15 929-636 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN10 NY
2022-07-15 954-852 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C FTLAUDERDL FL
2022-07-14 213-682 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2022-07-14 414-850 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MILWAUKZN1 WI
2022-07-14 425-540 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BOTHELL WA
2022-07-14 442-390 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ENCINITAS CA
2022-07-14 480-906 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-07-14 505-524 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J ALBUQURQUE NM
2022-07-14 520-651 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 TUCSON AZ
2022-07-14 619-853 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHULAVISTA CA
2022-07-14 623-286 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-07-14 646-566 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H NWYRCYZN01 NY
2022-07-14 646-814 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2022-07-14 657-608 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ORANGE CA
2022-07-14 669-320 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SARATOGA CA
2022-07-14 684-276 not yet reported which blocks → AST TELECOM, LLC 1460 AM SAMOA AS
2022-07-14 719-678 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J COLORDOSPG CO
2022-07-14 719-681 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 KARVAL CO
2022-07-14 782-317 not yet reported which blocks → Distributel 081E Charlottetown —
2022-07-14 782-318 not yet reported which blocks → Distributel 081E Alberton —
2022-07-14 782-319 not yet reported which blocks → Distributel 081E Borden —
2022-07-14 782-320 not yet reported which blocks → Distributel 081E Covehead —
2022-07-14 782-323 not yet reported which blocks → Distributel 081E Hunter River —
2022-07-14 782-325 not yet reported which blocks → Distributel 081E Kensington —
2022-07-14 782-326 not yet reported which blocks → Distributel 081E Montague —
2022-07-14 782-327 not yet reported which blocks → Distributel 081E Murray River —
2022-07-14 782-328 not yet reported which blocks → Distributel 081E New Haven —
2022-07-14 782-329 not yet reported which blocks → Distributel 081E O'Leary —
2022-07-14 782-330 not yet reported which blocks → Distributel 081E Rusticoville —
2022-07-14 782-331 not yet reported which blocks → Distributel 081E Souris —
2022-07-14 782-332 not yet reported which blocks → Distributel 081E Summerside —
2022-07-14 782-334 not yet reported which blocks → Distributel 081E Tignish —
2022-07-14 805-972 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LOMPOC CA
2022-07-14 848-329 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 TOMS RIVER NJ
2022-07-14 929-627 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2022-07-14 929-628 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2022-07-13 229-282 2XXX4XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 WARWICK GA
2022-07-13 341-241 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C HAYWARD CA

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.