NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

3 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 681
NEW CINGULAR WIRELESS PCS, LLC - DC 3
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-08-17 681-486 0XXX3XXX · 2 holders which blocks → ONVOY, LLC - WV 449F NEWCUMBRLD WV
2023-08-17 681-487 0XXX3XXX · 2 holders which blocks → ONVOY, LLC - WV 449F PTPLEASANT WV
2023-07-26 681-480 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2023-07-18 681-472 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2023-07-18 681-473 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2023-07-18 681-474 1XXX2XXX3XXX4XXX5XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BECKLEY WV
2023-07-18 681-476 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J HNTNGTNZN2 WV
2023-07-18 681-478 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CHRLSTNZN6 WV
2023-06-07 681-471 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2023-05-18 681-470 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - WV 9944 ELIZABETH WV
2023-05-16 681-304 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J MORGANTOWN WV
2023-05-04 681-786 0XXX6XXX7XXX · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J OAKVALE WV
2023-05-04 681-871 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WELCH WV
2023-05-03 681-468 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2023-04-26 681-467 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 732J CHRLSTNZN1 WV
2023-04-20 681-464 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2023-03-22 681-463 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 732J BECKLEY WV
2023-03-21 681-462 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 RIPLEY WV
2023-03-10 681-461 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 KINGWOOD WV
2023-03-08 681-460 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 FAIRMONT WV
2023-03-07 681-454 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 SUTTON WV
2023-02-17 681-449 0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WILLIAMSTN WV
2023-02-17 681-450 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MONTGOMERY WV
2023-02-14 681-429 0XXX9XXX which blocks → PEERLESS NETWORK OF WEST VIRGINIA, LLC - WV 928H BLUEFIELD WV
2023-01-10 681-421 2XXX which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - WV 423C ELLENBORO WV
2023-01-06 681-398 0XXX1XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FALLNGWTRS WV
2022-12-01 681-393 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2022-11-07 681-457 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 LOGAN WV
2022-10-31 681-392 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2022-10-27 681-453 0XXX3XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F BELINGTON WV
2022-10-04 681-452 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 HEDGESVL WV
2022-09-30 681-446 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MARTINSBG WV
2022-09-29 681-451 0XXX1XXX2XXX3XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F BUFFALO WV
2022-09-23 681-458 0XXX1XXX2XXX8XXX9XXX which blocks → COMMIO, LLC 939H OCEANA WV
2022-09-16 681-447 2XXX which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - WV 423C CAIRO WV
2022-09-14 681-437 1XXX2XXX7XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J BEECHBTTOM WV
2022-09-01 681-683 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WV 449F ELKINS WV
2022-08-26 681-382 0XXX1XXX2XXX · 2 holders which blocks → NUSO, LLC 732J CHESTER WV
2022-07-13 681-896 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J CLARKSBURG WV
2022-06-17 681-397 6XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WV 077G RAINELLE WV
2022-05-24 681-332 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 FAIRMONT WV
2022-03-31 681-426 0XXX3XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 WHSLPHRSPG WV
2022-03-31 681-436 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SETH WV
2022-03-28 681-438 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2022-03-18 681-390 0XXX1XXX2XXX3XXX4XXX9XXX · 3 holders which blocks → AT&T - LOCAL 7421 MILTON WV
2022-03-09 681-314 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 PRKRSBGZN3 WV
2022-03-09 681-428 0XXX7XXX8XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 SPENCER WV
2022-02-22 681-424 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CHRLSTNZN6 WV
2022-01-25 681-364 0XXX1XXX2XXX6XXX7XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F GREENVILLE WV
2022-01-25 681-423 0XXX1XXX2XXX8XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F WELLSBURG WV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.