NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 518-498 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-499 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 WHITEHALL NY
— 518-500 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C CENTRALBDG NY
— 518-503 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → TC SYSTEMS, INC. - NY 7140 TICONDROGA NY
— 518-504 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WARRENSBG NY
— 518-505 0XXX which blocks → METROPCS, INC. 5562 ALBANY NY
— 518-506 0XXX which blocks → METROPCS, INC. 5562 ALBANY NY
— 518-507 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SCHUYLERVL NY
— 518-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 518-514 8XXX which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-515 0XXX1XXX2XXX5XXX7XXX · 5 holders which blocks → TELXMEDIA, INC. - NY 744H CROWNPOINT NY
— 518-519 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J RICHMONDVL NY
— 518-521 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 MALONE NY
— 518-522 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-523 6XXX which blocks → VERIZON NEW YORK, INC. 9104 LAKEPLACID NY
— 518-524 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 LAKEPLACID NY
— 518-525 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-526 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-527 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-529 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 MOIRA NY
— 518-531 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 7 holders which blocks → TC SYSTEMS, INC. - NY 7140 GREENWICH NY
— 518-532 1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SCHROON LK NY
— 518-533 0XXX4XXX5XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-534 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J PLATTSBG NY
— 518-536 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PLATTSBG NY
— 518-537 not yet reported which blocks → GERMANTOWN TEL. CO., INC. 0097 GERMANTOWN NY
— 518-538 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENSFALLS NY
— 518-540 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ALBANY NY
— 518-541 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H MECHANICVL NY
— 518-542 none assigned yet which blocks → METROPCS, INC. 5562 ALBANY NY
— 518-543 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 HAGUE NY
— 518-546 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 PORT HENRY NY
— 518-547 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PUTNAM NY
— 518-548 0XXX1XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 LKPLEASANT NY
— 518-550 not yet reported which blocks → NY
— 518-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NY
— 518-557 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SCHENCTADY NY
— 518-560 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-561 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PLATTSBG NY
— 518-562 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PLATTSBG NY
— 518-563 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PLATTSBG NY
— 518-564 0XXX1XXX8XXX9XXX · 4 holders which blocks → PRIMELINK, INC. - NY 0065 PLATTSBG NY
— 518-565 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PLATTSBG NY
— 518-566 1XXX3XXX4XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PLATTSBG NY
— 518-567 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 HUDSON NY
— 518-568 0XXX1XXX4XXX6XXX8XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 ST JOHNSVL NY
— 518-569 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 PLATTSBG NY
— 518-570 3XXX4XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLATTSBG NY
— 518-572 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLATTSBG NY
— 518-573 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.