NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 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 28
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 412-222 not yet reported which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON1 PA
— 412-224 0–9 XXXall 10 · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTTSBGZON1 PA
— 412-225 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-226 0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 CLAIRTON PA
— 412-227 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-231 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-232 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-233 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 CLAIRTON PA
— 412-234 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-235 0XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON1 PA
— 412-236 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-237 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-238 2XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON2 PA
— 412-241 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-242 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-243 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-244 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-246 3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON1 PA
— 412-247 8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-249 9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN14 PA
— 412-250 5XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON7 PA
— 412-251 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J PTTSBGZON1 PA
— 412-252 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON3 PA
— 412-254 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON6 PA
— 412-255 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-256 4XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-257 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN13 PA
— 412-258 0XXX5XXX7XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON1 PA
— 412-259 0XXX2XXX3XXX5XXX6XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN16 PA
— 412-260 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-261 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-262 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN15 PA
— 412-263 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-264 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN15 PA
— 412-266 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-268 0XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-269 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN15 PA
— 412-270 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-271 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-272 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-273 0XXX2XXX5XXX8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-276 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-278 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-279 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-280 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON1 PA
— 412-281 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-282 0XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON3 PA
— 412-283 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN12 PA
— 412-285 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-287 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 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.