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
2019-06-13 205-899 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H BIRMINGHAM AL
2019-06-13 438-291 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-06-13 438-292 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-06-13 438-293 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-06-13 438-294 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-06-13 438-297 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-06-13 647-596 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-13 769-867 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H JACKSON MS
2019-06-13 838-210 0–9 XXXwhole prefix which blocks → LTE WIRELESS INC D/B/A LTE WIRELESS - NY 452J MILLERTON NY
2019-06-12 302-496 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 NEWARK DE
2019-06-12 440-598 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C BIRMINGHAM OH
2019-06-12 469-669 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARROLLTON TX
2019-06-12 469-691 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 CARROLLTON TX
2019-06-12 501-363 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C HOTSPRINGS AR
2019-06-12 651-867 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H TWINCITIES MN
2019-06-12 720-779 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F DENVER CO
2019-06-12 725-780 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J LAS VEGAS NV
2019-06-12 878-728 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E GIBSONIA PA
2019-06-12 904-523 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 JACKSONVL FL
2019-06-11 208-560 1XXX which blocks → MUD LAKE TELEPHONE COOPERATIVE ASSOCIATION, INC. 2227 DUBOIS ID
2019-06-11 501-361 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BRYANTCGVL AR
2019-06-11 605-975 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - SD 162G YANKTON SD
2019-06-11 647-443 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-11 647-595 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-11 970-634 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 JOHNSTMLKN CO
2019-06-10 218-509 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 MOOSE LAKE MN
2019-06-10 267-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J PENNSBURG PA
2019-06-10 510-980 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2019-06-10 531-232 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-10 602-609 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J PHOENIX AZ
2019-06-10 647-441 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-10 647-442 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-10 657-385 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BUENA PARK CA
2019-06-10 907-379 0XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS 6563 HEALY AK
2019-06-10 907-409 0XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS 6563 CANTWELL AK
2019-06-10 907-502 0XXX1XXX2XXX3XXX4XXX5XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS 6563 TALKEETNA AK
2019-06-10 917-571 0–9 XXXwhole prefix which blocks → LTE WIRELESS INC D/B/A LTE WIRELESS - NY 452J NWYRCYZN01 NY
2019-06-07 341-888 0–9 XXXall 10 · 4 holders which blocks → WIDE VOICE, LLC - CA 252F FRNK MAIN CA
2019-06-07 365-567 not yet reported which blocks → ExaTEL Inc. 3147 Schomberg —
2019-06-07 385-338 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - UT 871E LEHI UT
2019-06-07 385-438 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - UT 871E PAYSON UT
2019-06-07 385-442 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - UT 871E CLEARFIELD UT
2019-06-07 916-809 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2019-06-06 515-417 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 FORT DODGE IA
2019-06-06 709-205 not yet reported which blocks → TELUS Integrated Communications 2782 New Harbour —
2019-06-06 709-206 not yet reported which blocks → TELUS Integrated Communications 2782 Grand Bank —
2019-06-06 782-241 not yet reported which blocks → TELUS Integrated Communications 2782 Summerside —
2019-06-06 786-698 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 KEYS FL
2019-06-06 816-334 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 LEESSUMMIT MO
2019-06-06 857-335 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J BOSTON MA

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.