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 215
VERIZON PENNSYLVANIA, INC. 424
NEW CINGULAR WIRELESS PCS, LLC - DC 74
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 48
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 41
SPOK, INC. 36
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
— 215-945 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN44 PA
— 215-946 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN44 PA
— 215-947 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN37 PA
— 215-948 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN32 PA
— 215-949 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN44 PA
— 215-950 not yet reported which blocks → PA
— 215-951 3XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN3 PA
— 215-952 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-953 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN40 PA
— 215-955 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-956 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN39 PA
— 215-957 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN39 PA
— 215-958 not yet reported which blocks → PA
— 215-959 not yet reported which blocks → PA
— 215-960 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN4 PA
— 215-961 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN4 PA
— 215-962 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
— 215-963 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-964 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHLDLPHZN1 PA
— 215-965 6XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN1 PA
— 215-966 0XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN2 PA
— 215-967 2XXX3XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN3 PA
— 215-968 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 NEWTOWN PA
— 215-969 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN4 PA
— 215-970 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHPHSBZN43 PA
— 215-971 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
— 215-972 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-973 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-974 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN37 PA
— 215-975 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN37 PA
— 215-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT PHLDLPHZN1 PA
— 215-977 0XXX4XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-978 7XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-979 6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-980 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN3 PA
— 215-981 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-982 1XXX2XXX6XXX8XXX · 2 holders which blocks → AT&T - LOCAL 7421 PHLDLPHZN1 PA
— 215-983 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
— 215-984 1XXX2XXX3XXX6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN3 PA
— 215-985 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-986 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHPHSBZN33 PA
— 215-988 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-990 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
— 215-991 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN3 PA
— 215-992 2XXX4XXX6XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PHLDLPHZN4 PA
— 215-993 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 NORTHWALES PA
— 215-994 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PHLDLPHZN1 PA
— 215-996 6XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LINELXNGTN PA
— 215-997 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 LINELXNGTN PA
— 215-998 not yet reported which blocks → SPOK, INC. 6630 PHLDLPHZN1 PA

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.