NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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
2016-02-17 412-514 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2016-02-17 502-702 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - KY 896E LA GRANGE KY
2016-02-17 667-202 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MD 876D ELKTON MD
2016-02-16 225-461 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GONZALES LA
2016-02-16 226-770 not yet reported which blocks → Iristel Inc. 154E Guelph —
2016-02-16 226-797 not yet reported which blocks → Iristel Inc. 154E Chatham —
2016-02-16 226-841 not yet reported which blocks → Iristel Inc. 154E Wingham —
2016-02-16 226-890 not yet reported which blocks → Iristel Inc. 154E Hespeler —
2016-02-16 249-315 not yet reported which blocks → Iristel Inc. 154E Barrie —
2016-02-16 272-466 0–9 XXXall 10 · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WOOLRICH PA
2016-02-16 317-741 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2016-02-16 343-301 not yet reported which blocks → Iristel Inc. 154E Cornwall —
2016-02-16 343-302 not yet reported which blocks → Iristel Inc. 154E Kingston —
2016-02-16 346-230 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C APOLLO TX
2016-02-16 365-652 not yet reported which blocks → Iristel Inc. 154E Welland —
2016-02-16 365-880 not yet reported which blocks → Videotron Ltd. 787G St. Catharines-Thorold —
2016-02-16 434-772 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G CAPRON VA
2016-02-16 440-493 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C VICTORY OH
2016-02-16 587-813 not yet reported which blocks → Iristel Inc. 154E Lethbridge —
2016-02-16 631-705 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C ATLANTIC NY
2016-02-16 639-395 not yet reported which blocks → Iristel Inc. 154E Watrous —
2016-02-16 782-826 not yet reported which blocks → Iristel Inc. 154E Weymouth —
2016-02-16 786-901 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 KEYS FL
2016-02-16 804-599 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G TAPPAHNNCK VA
2016-02-16 845-378 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GOSHEN NY
2016-02-16 862-313 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J NEWARK NJ
2016-02-16 909-787 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C RIALTO CA
2016-02-16 956-549 7XXX which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J STILLMAN TX
2016-02-15 530-805 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ORLAND CA
2016-02-15 551-255 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2016-02-15 628-877 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C CORTEMADRA CA
2016-02-15 631-212 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C COMMACK NY
2016-02-15 631-975 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC- NY 384C CTRMORICHS NY
2016-02-15 669-377 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C MORGANHILL CA
2016-02-15 831-315 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SOLEDAD CA
2016-02-15 848-204 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C WOODBRIDGE NJ
2016-02-15 909-402 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C MARSHALL CA
2016-02-12 226-641 not yet reported which blocks → Iristel Inc. 154E Tillsonburg —
2016-02-12 226-840 not yet reported which blocks → Iristel Inc. 154E Walkerton —
2016-02-12 336-762 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K THOMASVL NC
2016-02-12 343-304 not yet reported which blocks → Iristel Inc. 154E Vankleek Hill —
2016-02-12 431-301 not yet reported which blocks → Iristel Inc. 154E Starbuck —
2016-02-12 431-302 not yet reported which blocks → Iristel Inc. 154E Stonewall —
2016-02-12 440-771 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OH 464C HILLCREST OH
2016-02-12 470-291 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 BARNESVL GA
2016-02-12 470-577 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D GAINESVL GA
2016-02-12 506-713 not yet reported which blocks → Iristel Inc. 154E St. George —
2016-02-12 506-714 not yet reported which blocks → Iristel Inc. 154E St. Stephen —
2016-02-12 506-715 not yet reported which blocks → Iristel Inc. 154E Shippagan —
2016-02-12 506-716 not yet reported which blocks → Iristel Inc. 154E Tracadie —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.