NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 405
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
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
— 405-802 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-804 0XXX1XXX2XXX8XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H SPENCER OK
— 405-805 3XXX4XXX6XXX9XXX · 2 holders which blocks → ONVOY, LLC - OK 409F YUKON OK
— 405-806 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MUSTANG OK
— 405-807 0XXX1XXX2XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OK 409F NICOMAPARK OK
— 405-808 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-809 0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - OK 409F NORMAN OK
— 405-810 5XXX6XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OK
— 405-812 2XXX which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-813 none assigned yet which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
— 405-814 3XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - OK 409F MOORE OK
— 405-815 0XXX1XXX3XXX4XXX7XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
— 405-816 none assigned yet which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-818 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-819 0XXX which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-820 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-821 0XXX which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-822 0XXX2XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-823 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-824 0XXX2XXX which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-826 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-828 not yet reported which blocks → PIONEER TEL. COOP., INC. 2018 DOVER OK
— 405-830 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-831 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
— 405-833 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-834 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-838 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
— 405-840 not yet reported which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-841 not yet reported which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-842 not yet reported which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-843 not yet reported which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-844 not yet reported which blocks → SOUTHWESTERN BELL 9533 EDMOND OK
— 405-848 not yet reported which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-849 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BRITTON OK
— 405-850 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
— 405-853 none assigned yet which blocks → PIONEER TEL. COOP., INC. 2018 HENNESSEY OK
— 405-858 0XXX8XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-865 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 CARNEY OK
— 405-867 0XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW 1165 MAYSVILLE OK
— 405-869 4XXX6XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 MIDWEST CY OK
— 405-872 2XXX6XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 NOBLE OK
— 405-878 2XXX which blocks → SOUTHWESTERN BELL 9533 SHAWNEE OK
— 405-879 0XXX1XXX which blocks → SOUTHWESTERN BELL 9533 BRITTON OK
— 405-880 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 STILLWATER OK
— 405-883 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PIEDMONT OK
— 405-884 not yet reported which blocks → PIONEER TEL. COOP., INC. 2018 GEARY OK
— 405-888 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 EDMOND OK
— 405-893 not yet reported which blocks → PIONEER TEL. COOP., INC. 2018 CALUMET OK
— 405-895 not yet reported which blocks → SOUTHWESTERN BELL 9533 MOORE OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.