NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2014-04-21 903-329 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F ROANE TX
2014-04-21 903-420 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F EMHOUSE TX
2014-04-21 912-255 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HINESVILLE GA
2014-04-21 914-208 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C OSSINING NY
2014-04-18 407-734 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ORLANDO FL
2014-04-18 458-214 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J PHOENIX OR
2014-04-18 458-216 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MARCOLA OR
2014-04-18 609-787 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN NJ
2014-04-18 661-440 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 BKFD MAIN CA
2014-04-18 818-930 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2014-04-18 904-518 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2014-04-18 913-224 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H WCLEVELAND KS
2014-04-18 978-813 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SHIRLEY MA
2014-04-17 239-301 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BONITA SPG FL
2014-04-17 405-300 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C MOORE OK
2014-04-17 424-346 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2014-04-17 469-772 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
2014-04-17 470-267 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA NW GA
2014-04-17 470-355 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J ATLANTA GA
2014-04-17 470-588 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
2014-04-17 479-317 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J RUSSELLVL AR
2014-04-17 512-675 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F BUCHANNDAM TX
2014-04-17 512-957 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PAIGE TX
2014-04-17 517-205 0–9 XXXwhole prefix which blocks → MICHIGAN BELL TEL CO 9323 JACKSON MI
2014-04-17 559-575 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CLOVIS CA
2014-04-17 561-508 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-04-17 571-290 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VA 138E WSNGTNZN08 VA
2014-04-17 586-636 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G RICHMOND MI
2014-04-17 646-798 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2014-04-17 727-240 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 CLEARWATER FL
2014-04-17 786-574 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-04-17 786-661 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J NORTH DADE FL
2014-04-17 786-707 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2014-04-17 813-570 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2014-04-17 816-829 0XXX1XXX4XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CLEVELAND MO
2014-04-17 832-974 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2014-04-16 216-302 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2014-04-16 305-916 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C KEYS FL
2014-04-16 352-717 0–9 XXXall 10 · 4 holders which blocks → ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND 7857 CLERMONT FL
2014-04-16 469-717 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F JOSEPHINE TX
2014-04-16 470-237 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
2014-04-16 682-317 0–9 XXXall 10 · 8 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CLEBURNE TX
2014-04-16 702-919 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MTCHARLETN NV
2014-04-16 774-505 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2014-04-16 832-821 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2014-04-16 832-925 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-04-16 832-943 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-04-16 903-914 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CASH TX
2014-04-15 432-215 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TERMINAL TX
2014-04-15 571-919 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 LEESBURG VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.