NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
— 276-766 5XXX6XXX7XXX · 3 holders which blocks → UNITED TELEPHONE-SOUTHEAST-VA DBA CENTURYLINK-VA 4511 SYLVATUS VA
— 276-768 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → UNITED STATES CELLULAR - VA 6283 INDEPNDNCE VA
— 276-773 4XXX5XXX6XXX7XXX · 3 holders which blocks → UNITED TELEPHONE-SOUTHEAST-VA DBA CENTURYLINK-VA 4511 INDEPNDNCE VA
— 276-779 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HILLSVILLE VA
— 276-780 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MARION VA
— 276-781 3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → UNITED TELEPHONE-SOUTHEAST-VA DBA CENTURYLINK-VA 4511 MARION VA
— 276-782 none assigned yet which blocks → UNITED TELEPHONE-SOUTHEAST-VA DBA CENTURYLINK-VA 4511 MARION VA
— 276-783 not yet reported which blocks → UNITED TELEPHONE-SOUTHEAST-VA DBA CENTURYLINK-VA 4511 MARION VA
— 276-794 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 LEBANON VA
— 276-796 0XXX1XXX2XXX3XXX6XXX8XXX · 6 holders which blocks → VERIZON VIRGINIA, INC. 9213 POUND VA
— 276-806 7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MARTINSVL VA
— 276-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 276-821 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BRISTOL VA
— 276-835 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 CLINCHCO VA
— 276-859 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 DAVENPORT VA
— 276-861 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - VA 138E CUMBERLDGP VA
— 276-865 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON VIRGINIA, INC. 9213 HAYSI VA
— 276-870 6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 NORTON VA
— 276-873 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 HONAKER VA
— 276-880 0XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 LEBANON VA
— 276-881 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 3 holders which blocks → VERIZON SOUTH, INC. - VA 4337 JEWELL RDG VA
— 276-883 0–9 XXXall 10 · 9 holders which blocks → VERIZON VIRGINIA, INC. 9213 LEBANON VA
— 276-889 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 LEBANON VA
— 276-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 276-926 2XXX3XXX7XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 CLINTWOOD VA
— 276-928 3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON SOUTH, INC. - VA 4337 ROCKY GAP VA
— 276-930 7XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 WOOLWINE VA
— 276-934 0XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 SPENCER VA
— 276-935 9XXX which blocks → VERIZON SOUTH, INC. - VA 4337 GRUNDY VA
— 276-940 not yet reported which blocks → SCOTT COUNTY TEL. COOP., INC. 0248 CLINCHPORT VA
— 276-944 1XXX2XXX8XXX9XXX · 3 holders which blocks → UNITED TELEPHONE-SOUTHEAST-VA DBA CENTURYLINK-VA 4511 MEADOWVIEW VA
— 276-945 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON SOUTH, INC. - VA 4337 POCAHONTAS VA
— 276-950 not yet reported which blocks → VA
— 276-952 9XXX which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 MEADOWSDAN VA
— 276-954 not yet reported which blocks → VERIZON SOUTH, INC. - VA 4337 BLUEFIELD VA
— 276-956 not yet reported which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 RIDGEWAY VA
— 276-957 not yet reported which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 SPENCER VA
— 276-958 not yet reported which blocks → VA
— 276-959 not yet reported which blocks → VA
— 276-963 not yet reported which blocks → VERIZON SOUTH, INC. - VA 4337 RICHLANDS VA
— 276-964 not yet reported which blocks → VERIZON SOUTH, INC. - VA 4337 RICHLANDS VA
— 276-970 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RICHLANDS VA
— 276-971 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RICHLANDS VA
— 276-973 6XXX which blocks → VERIZON VIRGINIA, INC. 9213 NORTON VA
— 276-976 not yet reported which blocks → VA
— 276-979 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON SOUTH, INC. - VA 4337 TAZEWELL VA
— 276-988 not yet reported which blocks → VERIZON SOUTH, INC. - VA 4337 TAZEWELL VA
— 276-991 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 HONAKER VA
— 276-995 not yet reported which blocks → SCOTT COUNTY TEL. COOP., INC. 0248 FT BLACKMR VA
— 279-200 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J SCRM MAIN CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.