NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
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
2005-09-02 765-818 1XXX8XXX · 2 holders which blocks → HANCOCK COMMUNICATIONS, INC. - IN 7459 MORRISTOWN IN
2005-09-02 819-862 not yet reported which blocks → Bell Canada 8050 Trois-Rivieres —
2005-09-02 920-560 0–9 XXXall 10 · 3 holders which blocks → TDS METROCOM, LLC 520K APPLETON WI
2005-09-01 219-707 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2005-09-01 224-286 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKEZURICH IL
2005-09-01 267-739 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → SCHUYLKILL MOBILE FONE, INC. 6739 PHLDLPHZN2 PA
2005-09-01 480-292 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-01 505-803 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2005-09-01 541-813 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 BROOKINGS OR
2005-09-01 630-864 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 NAPERVILLE IL
2005-09-01 832-477 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2005-09-01 864-828 4XXX7XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 DUE WEST SC
2005-08-31 219-747 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J WOLCOTT IN
2005-08-31 403-775 not yet reported which blocks → GT Group Telecom Services Corp. 8506 Calgary —
2005-08-31 425-383 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9638 BELLEVUE WA
2005-08-31 514-664 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2005-08-31 567-712 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LIMA OH
2005-08-31 574-988 0XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J NEWCARLISL IN
2005-08-31 647-235 not yet reported which blocks → Bell Mobility 6574 Toronto —
2005-08-31 647-724 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2005-08-31 702-686 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2005-08-31 778-785 not yet reported which blocks → GT Group Telecom Services Corp. 8506 Vancouver —
2005-08-31 803-832 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBIA SC
2005-08-31 803-863 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBIA SC
2005-08-31 843-504 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WMYRTLEBCH SC
2005-08-31 972-974 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-08-31 989-388 0–9 XXXall 10 · 5 holders which blocks → 123.NET, LLC 2550 ITHACA MI
2005-08-30 270-507 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 RUSSELLSPG KY
2005-08-30 310-982 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 SAN PEDRO CA
2005-08-30 574-377 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2005-08-30 610-969 0–9 XXXall 10 · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 ALLENTOWN PA
2005-08-30 613-882 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2005-08-30 641-323 0–9 XXXall 10 · 6 holders which blocks → WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA 6103 NORTHWOOD IA
2005-08-30 702-883 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-08-30 703-953 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2005-08-30 905-532 not yet reported which blocks → Bell Canada 8051 Thornhill —
2005-08-29 505-809 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 SHIPROCK NM
2005-08-29 509-621 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J NEWMANLAKE WA
2005-08-29 574-333 0–9 XXXall 10 · 3 holders which blocks → COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 ELKHART IN
2005-08-29 660-953 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 PRINCETON MO
2005-08-29 701-535 5XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 ELLENDALE ND
2005-08-29 850-693 2XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MARIANNA FL
2005-08-29 870-631 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CORNING AR
2005-08-29 936-744 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 TRINITY TX
2005-08-28 920-768 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E FALL RIVER WI
2005-08-27 727-678 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 CLEARWATER FL
2005-08-27 813-900 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 TAMPA FL
2005-08-27 941-592 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BRADENTON FL
2005-08-26 515-338 1XXX2XXX5XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ELLSWORTH IA
2005-08-26 785-772 0–9 XXXall 10 · 9 holders which blocks → NEX-TECH WIRELESS, LLC 122D ST FRANCIS KS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.