NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-08-30 681-227 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WV 9944 FAYETTEVL WV
2018-08-30 682-272 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2018-08-30 704-318 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE NC
2018-08-30 720-649 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F GEORGETOWN CO
2018-08-30 743-200 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NC 638E GATEWOOD NC
2018-08-30 743-800 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E ROARINGGAP NC
2018-08-30 850-788 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C LYNN HAVEN FL
2018-08-30 850-789 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C CENTURY FL
2018-08-30 863-322 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J BARTOW FL
2018-08-30 864-883 0–9 XXXall 10 · 6 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 ANDERSON SC
2018-08-30 865-334 0–9 XXXall 10 · 3 holders which blocks → TWIN LAKES COMMUNICATIONS, INC. - TN 204G KNOXVILLE TN
2018-08-30 865-341 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F OAK RIDGE TN
2018-08-30 873-568 not yet reported which blocks → Videotron Ltd. 8306 Gracefield —
2018-08-30 979-269 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C FREEPORT TX
2018-08-30 984-300 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NC 638E ANGIER NC
2018-08-30 984-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E CLAYTON NC
2018-08-30 984-600 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E FUQUAYVRIN NC
2018-08-29 205-619 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E BERRY AL
2018-08-29 205-782 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E HALEYVILLE AL
2018-08-29 251-313 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E DAUPHIN IS AL
2018-08-29 256-719 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E MOULTON AL
2018-08-29 334-326 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AL 604E UNIONTOWN AL
2018-08-29 334-666 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AL 604E WETUMPKA AL
2018-08-29 343-367 not yet reported which blocks → Videotron Ltd. 383F Belleville —
2018-08-29 343-507 not yet reported which blocks → Videotron Ltd. 383F Brockville —
2018-08-29 343-567 not yet reported which blocks → Videotron Ltd. 383F Pembroke —
2018-08-29 343-867 not yet reported which blocks → Videotron Ltd. 383F Cornwall —
2018-08-29 365-724 not yet reported which blocks → Videotron Ltd. 383F Cobourg —
2018-08-29 469-542 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2018-08-29 585-470 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2018-08-29 629-225 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TN 525E KINGSTNSPG TN
2018-08-29 629-226 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - TN 525E WATERTOWN TN
2018-08-29 772-771 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - FL 937C JENSEN BCH FL
2018-08-29 772-773 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C FORTPIERCE FL
2018-08-29 786-632 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E KEYS FL
2018-08-29 845-479 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN NY
2018-08-29 850-446 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C MUNSON FL
2018-08-29 854-458 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - SC 548E LAKE VIEW SC
2018-08-29 862-328 0–9 XXXall 10 · 6 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 BUTLER NJ
2018-08-29 864-532 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E ANDERSON SC
2018-08-29 864-564 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E SPARTANBG SC
2018-08-29 864-635 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E CLEMSON SC
2018-08-29 864-668 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E PICKENS SC
2018-08-29 864-860 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - SC 548E BELTON SC
2018-08-29 864-866 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - SC 548E LIBERTY SC
2018-08-29 864-874 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - SC 548E GREER SC
2018-08-28 205-772 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E ETHELSVL AL
2018-08-28 205-813 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E PELL CITY AL
2018-08-28 458-500 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → INVOXIO INCORPORATED 158H BLACKBUTTE OR
2018-08-28 458-800 0–9 XXXall 10 · 6 holders which blocks → INVOXIO INCORPORATED 158H MADRAS OR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.