NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
— 267-978 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
— 267-979 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
— 267-980 none assigned yet which blocks → METROPCS, INC. 5562 PHPHSBZN40 PA
— 267-981 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN40 PA
— 267-982 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN40 PA
— 267-983 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN40 PA
— 267-984 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN40 PA
— 267-986 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN40 PA
— 267-987 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN40 PA
— 267-988 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN40 PA
— 267-989 3XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN40 PA
— 267-991 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → NETCARRIER TELECOM, INC. - PA 5494 PHPHSBZN40 PA
— 267-992 not yet reported which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN33 PA
— 267-994 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN43 PA
— 267-995 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
— 267-997 none assigned yet which blocks → METROPCS, INC. 5562 PHLDLPHZN1 PA
— 269-201 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J WATERVLIET MI
— 269-206 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHHAVEN MI
— 269-207 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 KALAMAZOO MI
— 269-208 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BENTON HBR MI
— 269-209 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BATTLE CRK MI
— 269-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 269-212 not yet reported which blocks → SPOK, INC. 6630 KALAMAZOO MI
— 269-214 3XXX4XXX5XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTHHAVEN MI
— 269-216 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 KALAMAZOO MI
— 269-217 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 KALAMAZOO MI
— 269-219 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 BATTLE CRK MI
— 269-226 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 KALAMAZOO MI
— 269-227 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRONTIER MIDSTATES, INC. - MI 0681 GLENN MI
— 269-228 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CASSOPOLIS MI
— 269-230 0–9 XXXall 10 · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SCHOOLCFT MI
— 269-232 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 KALAMAZOO MI
— 269-233 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CASSOPOLIS MI
— 269-236 1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → FRONTIER MIDSTATES, INC. - MI 0681 PULLMAN MI
— 269-244 0XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 THREERIVRS MI
— 269-248 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 MARSHALL MI
— 269-250 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C KALAMAZOO MI
— 269-251 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 KALAMAZOO MI
— 269-253 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER MIDSTATES, INC. - MI 0681 LACOTA MI
— 269-258 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 WAYLAND MI
— 269-260 0XXX which blocks → ONVOY SPECTRUM, LLC 624H BARODA MI
— 269-264 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON MI
— 269-266 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRIDGMAN MI
— 269-267 not yet reported which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 KALAMAZOO MI
— 269-268 7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BATTLE CRK MI
— 269-269 not yet reported which blocks → MI
— 269-271 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KALAMAZOO MI
— 269-272 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 HASTINGS MI
— 269-273 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 THREERIVRS MI
— 269-274 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BATTLE CRK MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.