NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-02-24 450-609 not yet reported which blocks → ISP Telecom Inc. 4727 Ste-Justine-de-Newton —
2012-02-24 450-620 not yet reported which blocks → ISP Telecom Inc. 4727 St-Polycarpe —
2012-02-24 450-634 not yet reported which blocks → Iristel Inc. 154E Laval-Ouest —
2012-02-24 450-639 not yet reported which blocks → Iristel Inc. 154E Laval-Est —
2012-02-24 469-304 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J PLANO TX
2012-02-24 484-925 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSTOWN PA
2012-02-24 515-918 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-24 520-789 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2012-02-24 587-323 not yet reported which blocks → Iristel Inc. 154E Calgary —
2012-02-24 587-324 not yet reported which blocks → Iristel Inc. 154E Calgary —
2012-02-24 661-418 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LANCASTER CA
2012-02-24 832-616 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J SPRING TX
2012-02-23 225-228 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J BATONROUGE LA
2012-02-23 256-662 0–9 XXXall 10 · 5 holders which blocks → FARMERS TELECOMMUNICATIONS CORPORATION - AL 947D VALLEYHEAD AL
2012-02-23 289-401 not yet reported which blocks → Iristel Inc. 154E Brampton —
2012-02-23 469-301 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F MCKINNEY TX
2012-02-23 504-777 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
2012-02-23 581-647 not yet reported which blocks → Videotron Ltd. 8306 Squatec —
2012-02-23 609-508 0–9 XXXall 10 · 6 holders which blocks → CSC VOICE, LLC 612K TRENTON NJ
2012-02-23 641-925 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → COMMUNICATIONS 1 NETWORK, INC. - IA 842E GARNER IA
2012-02-23 671-747 not yet reported which blocks → PTI PACIFICA INC. 387C AGANA GU
2012-02-23 769-777 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J JACKSON MS
2012-02-23 848-202 0–9 XXXall 10 · 4 holders which blocks → CSC VOICE, LLC 612K NEWBRNSWCK NJ
2012-02-23 872-205 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2012-02-23 902-703 not yet reported which blocks → Iristel Inc. 154E Halifax —
2012-02-23 902-704 not yet reported which blocks → Iristel Inc. 154E Halifax —
2012-02-23 902-813 not yet reported which blocks → Iristel Inc. 154E Charlottetown —
2012-02-23 902-816 not yet reported which blocks → Iristel Inc. 154E Charlottetown —
2012-02-23 954-440 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J FTLAUDERDL FL
2012-02-22 352-415 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J GAINESVL FL
2012-02-22 405-758 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 OKLA CITY OK
2012-02-22 407-779 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J ORLANDO FL
2012-02-22 561-225 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-22 606-689 0–9 XXXall 10 · 5 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C CORBIN KY
2012-02-22 762-222 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J AUGUSTA GA
2012-02-22 806-218 6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 LUBBOCK TX
2012-02-22 913-215 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GARDNER KS
2012-02-21 202-814 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2012-02-21 208-780 0–9 XXXall 10 · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7865 BOISE ID
2012-02-21 251-206 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J MOBILE AL
2012-02-21 404-594 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-02-21 404-764 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-02-21 407-985 0–9 XXXall 10 · 3 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L ORLANDO FL
2012-02-21 423-419 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CUMBERLDGP TN
2012-02-21 423-516 0–9 XXXall 10 · 6 holders which blocks → UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 4510 SULIVNGDNS TN
2012-02-21 470-269 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2012-02-21 570-728 0–9 XXXall 10 · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 POTTSVILLE PA
2012-02-21 786-760 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2012-02-21 786-762 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2012-02-21 786-763 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MIAMI FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.