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
— 830-739 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KERRVILLE TX
— 830-741 0XXX1XXX4XXX5XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 HONDO TX
— 830-742 0XXX2XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 POTEET TX
— 830-743 4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 NEWBRANFLS TX
— 830-745 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2154 KOSCIUSKO TX
— 830-746 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PEARSALL TX
— 830-751 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 MEDINALAKE TX
— 830-752 0XXX2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 EAGLE PASS TX
— 830-755 not yet reported which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 BALCONES TX
— 830-757 not yet reported which blocks → SOUTHWESTERN BELL 9533 EAGLE PASS TX
— 830-758 9XXX which blocks → SOUTHWESTERN BELL 9533 EAGLE PASS TX
— 830-762 0XXX2XXX4XXX5XXX7XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 LACOSTE TX
— 830-765 2XXX which blocks → STPCS JOINT VENTURE, LLC 4290 DEL RIO TX
— 830-767 0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 JOURDANTON TX
— 830-768 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DEL RIO TX
— 830-769 0XXX8XXX · 2 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 JOURDANTON TX
— 830-772 0XXX6XXX8XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 LYTLE TX
— 830-773 not yet reported which blocks → SOUTHWESTERN BELL 9533 EAGLE PASS TX
— 830-774 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DEL RIO TX
— 830-775 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DEL RIO TX
— 830-776 5XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EAGLE PASS TX
— 830-778 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DEL RIO TX
— 830-779 8XXX which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 LAVERNIA TX
— 830-780 6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 KARNESCITY TX
— 830-784 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 CHRISTINE TX
— 830-788 not yet reported which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 WAELDER TX
— 830-789 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2154 GILLETT TX
— 830-792 not yet reported which blocks → WINDSTREAM COMMUNICATIONS KERRVILLE, L.P. 2097 KERRVILLE TX
— 830-796 2XXX which blocks → SOUTHWESTERN BELL 9533 BANDERA TX
— 830-798 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 MARBLE FLS TX
— 830-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 830-816 0XXX5XXX7XXX9XXX · 2 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 BOERNE TX
— 830-822 not yet reported which blocks → T-MOBILE USA, INC. 6529 NEWBRANFLS TX
— 830-825 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 ROUND MT TX
— 830-832 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 NEWBRANFLS TX
— 830-833 3XXX8XXX · 2 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 BLANCO TX
— 830-839 none assigned yet which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 ROCKYCREEK TX
— 830-850 1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 BANDERA TX
— 830-851 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 DEVINE TX
— 830-854 2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CRYSTAL CY TX
— 830-857 7XXX which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 GONZALES TX
— 830-864 not yet reported which blocks → WINDSTREAM COMMUNICATIONS KERRVILLE, L.P. 2097 HARPER TX
— 830-866 not yet reported which blocks → HILL COUNTRY TEL. COOP., INC. 2086 MT HOME TX
— 830-867 0–9 XXXall 10 · 9 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BRACKETTVL TX
— 830-868 6XXX8XXX · 2 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 JOHNSON CY TX
— 830-875 0XXX4XXX7XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 LULING TX
— 830-876 none assigned yet which blocks → SOUTHWESTERN BELL 9533 CARRIZOSPG TX
— 830-879 0XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 COTULLA TX
— 830-885 not yet reported which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 SMITHSOVLY TX
— 830-889 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREDECKSBG TX

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.