NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 518
VERIZON NEW YORK, INC. 225
PAETEC ITEL, LLC 59
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 58
NEW CINGULAR WIRELESS PCS, LLC - DC 45
TC SYSTEMS, INC. - NY 35
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
2008-07-14 518-779 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
2008-04-08 518-728 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2008-01-22 518-345 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 GRANVILLE NY
2007-12-21 518-772 0–9 XXXall 10 · 3 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E ALBANY NY
2007-11-14 518-764 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2007-10-30 518-706 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JOHNSTOWN NY
2007-05-17 518-938 1XXX9XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CHATHAM NY
2006-08-01 518-937 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J ALBANY NY
2006-07-10 518-601 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J MINEVILLE NY
2006-07-03 518-763 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C ALBANY NY
2006-06-27 518-944 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2006-03-20 518-802 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLATTSBG NY
2006-02-23 518-655 0–9 XXXall 10 · 8 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 VOORHEESVL NY
2005-12-29 518-708 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ALBANY NY
2005-12-16 518-860 0–9 XXXall 10 · 2 holders which blocks → RINGSQUARED TELECOM LLC 8249 ALBANY NY
2005-11-10 518-512 0–9 XXXall 10 · 5 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ALBANY NY
2005-10-14 518-813 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2005-09-14 518-605 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2005-08-02 518-820 0XXX2XXX3XXX6XXX7XXX · 5 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 CORINTH NY
2005-07-22 518-596 0–9 XXXall 10 · 3 holders which blocks → METROPOLITAN TELECOMMUNICATIONS - NY 8526 ALBANY NY
2005-04-11 518-610 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINDERHOOK NY
2005-03-29 518-705 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JOHNSTOWN NY
2005-03-14 518-618 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ALBANY NY
2004-08-13 518-701 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2004-03-11 518-291 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATSKILL NY
2003-12-08 518-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAKEPLACID NY
2003-11-07 518-788 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 ALBANY NY
2003-07-09 518-894 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
2003-05-16 518-871 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J SARATOGSPG NY
2003-03-14 518-810 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2002-12-30 518-752 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLOVERSVL NY
2002-12-10 518-528 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ALBANY NY
2002-08-07 518-549 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J ALBANY NY
2002-07-19 518-588 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2002-07-10 518-844 0XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 GLOVERSVL NY
2002-06-10 518-653 none assigned yet which blocks → METROPCS, INC. 5562 HUDSON NY
2002-06-10 518-657 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 COBLESKILL NY
2002-06-04 518-892 none assigned yet which blocks → METROPCS, INC. 5562 TROY NY
2002-05-16 518-866 0XXX5XXX7XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMSTERDAM NY
2002-05-16 518-878 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SCHENCTADY NY
2002-05-16 518-879 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SARATOGSPG NY
2002-04-18 518-379 0XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SCHENCTADY NY
2002-04-15 518-444 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ATHENS NY
2002-03-28 518-726 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 PLATTSBG NY
2002-03-21 518-353 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MALONE NY
2002-03-21 518-354 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SARANAC LK NY
2002-03-08 518-859 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2002-02-11 518-729 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ALBANY NY
2002-01-30 518-375 0XXX2XXX3XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ALBANY NY
2002-01-21 518-967 not yet reported which blocks → CENTRAL VERMONT COMMUNICATIONS, INC. 1941 PLATTSBG NY

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.