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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 570-888 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 SAYRE PA
— 570-889 1XXX which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 RINGTOWN PA
— 570-891 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PITTSTON PA
— 570-893 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 LOCK HAVEN PA
— 570-894 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 MT POCONO PA
— 570-895 0XXX1XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MT POCONO PA
— 570-897 1XXX3XXX4XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 PORTLAND PA
— 570-898 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SUNBURY PA
— 570-900 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - PA 547E ASHLAND PA
— 570-902 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 NANTICOKE PA
— 570-905 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-906 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 SCRANTON PA
— 570-908 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PITTSTON PA
— 570-909 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SCRANTON PA
— 570-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 570-912 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BLOOMSBURG PA
— 570-916 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILLIAMSPT PA
— 570-918 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E QUAKERLAKE PA
— 570-922 not yet reported which blocks → WINDSTREAM BUFFALO VALLEY, INC. 0151 MIFFLINBG PA
— 570-923 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 RENOVO PA
— 570-924 2XXX6XXX7XXX8XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 ESTELLA PA
— 570-925 3XXX4XXX8XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 BENTON PA
— 570-928 3XXX4XXX5XXX6XXX · 4 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 DUSHORE PA
— 570-929 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MCADOO PA
— 570-930 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HALLSTEAD PA
— 570-934 1XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 RUSH PA
— 570-937 not yet reported which blocks → SOUTH CANAAN TEL. CO. 0204 SO CANAAN PA
— 570-938 3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PLYMOUTH PA
— 570-941 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 SCRANTON PA
— 570-942 1XXX2XXX3XXX5XXX7XXX8XXX · 6 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 NICHOLSON PA
— 570-943 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → VERIZON NORTH, INC. - PA (CONTEL) 0170 MCKEANSBG PA
— 570-945 1XXX2XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 FACTORYVL PA
— 570-946 1XXX2XXX3XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 LAPORTE PA
— 570-947 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSTON PA
— 570-949 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ROWLAND PA
— 570-950 not yet reported which blocks → PA
— 570-952 0XXX1XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 TAMAQUA PA
— 570-953 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → CTSI, INC. - PA 7513 DANVILLE PA
— 570-954 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-956 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HAZLETON PA
— 570-958 not yet reported which blocks → PA
— 570-959 not yet reported which blocks → PA
— 570-960 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 FORESTCITY PA
— 570-961 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 SCRANTON PA
— 570-962 1XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 BEECHCREEK PA
— 570-963 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 SCRANTON PA
— 570-965 4XXX5XXX7XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 SPRINGVL PA
— 570-966 not yet reported which blocks → WINDSTREAM BUFFALO VALLEY, INC. 0151 MIFFLINBG PA
— 570-967 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 LAWSVILLE PA
— 570-969 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 SCRANTON PA

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.