NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 856-952 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMDEN NJ
— 856-956 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 PITMAN NJ
— 856-957 0XXX2XXX5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J COLLINGSWD NJ
— 856-958 not yet reported which blocks → NJ
— 856-959 not yet reported which blocks → NJ
— 856-961 0XXX2XXX5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BEAVER BRK NJ
— 856-962 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-963 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-964 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-966 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-968 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-969 2XXX3XXX6XXX9XXX · 3 holders which blocks → VERIZON NEW JERSEY, INC. 9206 CAMDEN NJ
— 856-974 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 VINELAND NJ
— 856-975 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SWEDESBORO NJ
— 856-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
— 856-979 0XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 COLLINGSWD NJ
— 856-981 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 WOODBURY NJ
— 856-982 none assigned yet which blocks → METROPCS, INC. 5562 VINELAND NJ
— 856-983 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MARLTON NJ
— 856-985 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MARLTON NJ
— 856-986 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMDEN NJ
— 856-988 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 MARLTON NJ
— 856-990 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 XXXXXXXXXX NJ
— 856-993 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 CAMDEN NJ
— 856-994 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 WOODBURY NJ
— 856-996 5XXX which blocks → PAETEC ITEL, LLC 829J MOORESTOWN NJ
— 856-998 1XXX2XXX6XXX8XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J RIVERSIDE NJ
— 856-999 not yet reported which blocks → VERIZON NEW JERSEY, INC. 9206 XXXXXXXXXX NJ
— 857-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 857-223 none assigned yet which blocks → PAETEC ITEL, LLC 829J BOSTON MA
— 857-229 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J NEWTON MA
— 857-239 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MA 892D BOSTON MA
— 857-246 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 BOSTON MA
— 857-271 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D DORCHESTER MA
— 857-299 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D BELMONT MA
— 857-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 857-345 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
— 857-348 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
— 857-361 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
— 857-371 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MA 892D WATERTOWN MA
— 857-402 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J EASTBOSTON MA
— 857-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 857-412 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MA 892D CAMBRIDGE MA
— 857-414 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J BRIGHTON MA
— 857-432 not yet reported which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
— 857-452 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CHARLESTN MA
— 857-504 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
— 857-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 857-520 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D HYDE PARK MA
— 857-540 4XXX5XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.