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
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
2017-06-02 249-259 not yet reported which blocks → TELUS Integrated Communications 2782 Stroud —
2017-06-02 249-261 not yet reported which blocks → TELUS Integrated Communications 2782 Wasaga Beach —
2017-06-02 249-262 not yet reported which blocks → TELUS Integrated Communications 2782 Waubaushene —
2017-06-02 301-936 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H HAGERSTOWN MD
2017-06-02 312-438 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2017-06-02 320-319 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEAR LAKE MN
2017-06-02 365-250 not yet reported which blocks → TELUS Integrated Communications 2782 Bradford —
2017-06-02 365-260 not yet reported which blocks → TELUS Integrated Communications 2782 Tottenham —
2017-06-02 365-658 not yet reported which blocks → Iristel Inc. 154E Milton —
2017-06-02 365-659 not yet reported which blocks → Iristel Inc. 154E Newmarket —
2017-06-02 579-991 not yet reported which blocks → Iristel Inc. 154E St-Jerome —
2017-06-02 579-993 not yet reported which blocks → Iristel Inc. 154E St-Lin —
2017-06-02 587-705 not yet reported which blocks → Iristel Inc. 154E Medicine Hat —
2017-06-02 810-428 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2017-06-02 814-955 0–9 XXXall 10 · 8 holders which blocks → VERIZON NORTH, INC. - PA 0169 JOHNSTOWN PA
2017-06-02 825-468 not yet reported which blocks → TELUS 8084 Edmonton —
2017-06-02 873-499 not yet reported which blocks → Iristel Inc. 154E Sherbrooke —
2017-06-02 878-355 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 UNIONTOWN PA
2017-06-01 219-216 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 VALPARAISO IN
2017-06-01 219-217 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 WESTVILLE IN
2017-06-01 407-807 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D SANFORD FL
2017-06-01 417-519 0XXX4XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM MISSOURI, INC. 1885 VERONA MO
2017-06-01 618-217 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WOOD RIVER IL
2017-06-01 740-723 9XXX which blocks → WINDSTREAM OHIO, LLC 0665 GRATIOT OH
2017-06-01 779-241 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 MORRIS IL
2017-06-01 786-868 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D MIAMI FL
2017-06-01 873-733 not yet reported which blocks → Iristel Inc. 154E Maniwaki —
2017-06-01 937-300 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 EATON OH
2017-05-30 226-459 not yet reported which blocks → TELUS Integrated Communications 2782 Sauble Beach —
2017-05-30 226-495 not yet reported which blocks → TELUS Integrated Communications 2782 Thornbury —
2017-05-30 226-941 not yet reported which blocks → TELUS Integrated Communications 2782 Strathroy —
2017-05-30 226-942 not yet reported which blocks → TELUS Integrated Communications 2782 Parkhill —
2017-05-30 226-943 not yet reported which blocks → TELUS Integrated Communications 2782 Lucan —
2017-05-30 226-944 not yet reported which blocks → TELUS Integrated Communications 2782 Glencoe —
2017-05-30 226-945 not yet reported which blocks → TELUS Integrated Communications 2782 Exeter —
2017-05-30 226-947 not yet reported which blocks → TELUS Integrated Communications 2782 Dorchester —
2017-05-30 226-948 not yet reported which blocks → TELUS Integrated Communications 2782 Belmont —
2017-05-30 226-949 not yet reported which blocks → TELUS Integrated Communications 2782 Wiarton —
2017-05-30 226-951 not yet reported which blocks → TELUS Integrated Communications 2782 Markdale —
2017-05-30 226-952 not yet reported which blocks → TELUS Integrated Communications 2782 Hanover —
2017-05-30 226-953 not yet reported which blocks → TELUS Integrated Communications 2782 Durham —
2017-05-30 226-954 not yet reported which blocks → TELUS Integrated Communications 2782 Chesley —
2017-05-30 226-955 not yet reported which blocks → TELUS Integrated Communications 2782 Chatsworth —
2017-05-30 249-214 not yet reported which blocks → TELUS Integrated Communications 2782 Verner —
2017-05-30 249-215 not yet reported which blocks → TELUS Integrated Communications 2782 Sturgeon Falls —
2017-05-30 249-957 not yet reported which blocks → TELUS Integrated Communications 2782 Echo Bay —
2017-05-30 249-960 not yet reported which blocks → TELUS Integrated Communications 2782 Elliot Lake —
2017-05-30 249-961 not yet reported which blocks → TELUS Integrated Communications 2782 Goulais —
2017-05-30 249-962 not yet reported which blocks → TELUS Integrated Communications 2782 Iron Bridge —
2017-05-30 249-963 not yet reported which blocks → TELUS Integrated Communications 2782 St. Joseph Island —

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.