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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-04-02 236-765 not yet reported which blocks → TELUS 8086 Prince George —
2020-04-02 531-272 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 OMAHA NE
2020-04-02 657-429 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-04-02 949-512 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 IRVINE CA
2020-04-02 971-374 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2020-04-01 206-705 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J SEATTLE WA
2020-04-01 209-429 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GALT CA
2020-04-01 209-646 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TURLOCK CA
2020-04-01 210-864 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2020-04-01 236-965 not yet reported which blocks → TELUS Mobility 646F Vancouver —
2020-04-01 236-966 not yet reported which blocks → TELUS Mobility 646F Vancouver —
2020-04-01 463-232 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FORTVILLE IN
2020-04-01 469-798 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2020-04-01 480-640 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2020-04-01 608-672 1XXX2XXX · 2 holders which blocks → MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F CHASEBURG WI
2020-04-01 608-679 1XXX2XXX4XXX · 3 holders which blocks → MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F STODDARD WI
2020-04-01 772-477 0XXX1XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H INDIANTOWN FL
2020-04-01 845-799 0–9 XXXall 10 · 6 holders which blocks → XCHANGE TELECOM CORP. - NY 325B MONROE NY
2020-04-01 941-344 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MYAKKA FL
2020-04-01 941-732 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NORTH PORT FL
2020-04-01 971-369 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J PORTLAND OR
2020-04-01 984-254 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 RAL DUR AP NC
2020-03-31 202-948 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2020-03-31 202-960 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DC 6117 WSHNGTNZN1 DC
2020-03-31 205-961 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL
2020-03-31 205-962 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL
2020-03-31 205-963 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS LLC 807C BIRMINGHAM AL
2020-03-31 251-319 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS LLC 807C MOBILE AL
2020-03-31 254-373 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WACO TX
2020-03-31 314-904 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MO 093F ST LOUIS MO
2020-03-31 320-435 0XXX1XXX3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 MONTEVIDEO MN
2020-03-31 332-228 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN01 NY
2020-03-31 332-229 0–9 XXXwhole prefix which blocks → RCN TELECOM SERVICES, INC. - NY 7353 NWYRCYZN01 NY
2020-03-31 401-296 0–9 XXXall 10 · 6 holders which blocks → INTRADO COMMUNICATIONS, LLC 836C PROVIDENCE RI
2020-03-31 470-670 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J ATLANTA GA
2020-03-31 501-403 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BENTON AR
2020-03-31 501-409 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 BENTON AR
2020-03-31 513-663 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J HAMILTON OH
2020-03-31 571-462 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2020-03-31 639-703 not yet reported which blocks → SaskTel Mobility 9868 Waskesiu Lake —
2020-03-31 720-704 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2020-03-31 725-232 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J LAS VEGAS NV
2020-03-31 872-278 0–9 XXXwhole prefix which blocks → ONVOY, LLC 224C CHICGOZN01 IL
2020-03-31 873-455 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2020-03-31 901-506 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 845C MEMPHIS TN
2020-03-31 989-320 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 821C SAGINAW MI
2020-03-30 202-946 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 WSHNGTNZN1 DC
2020-03-30 213-472 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEBELLO CA
2020-03-30 437-625 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-03-30 438-472 not yet reported which blocks → Bell Mobility 6574 Montreal —

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.