NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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
— 860-954 not yet reported which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 HARTFORD CT
— 860-956 3XXX5XXX6XXX which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 HARTFORD CT
— 860-957 0–9 XXXall 10 · 3 holders which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 NEWMILFORD CT
— 860-958 not yet reported which blocks → CT
— 860-959 not yet reported which blocks → CT
— 860-961 none assigned yet which blocks → METROPCS, INC. 5562 NEW LONDON CT
— 860-962 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C ENFIELD CT
— 860-963 8XXX which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 PUTNAM CT
— 860-968 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → AT&T - LOCAL 7421 GLASTONBY CT
— 860-973 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRISTOL CT
— 860-974 4XXX5XXX6XXX8XXX · 3 holders which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 PUTNAM CT
— 860-975 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDDLETOWN CT
— 860-976 not yet reported which blocks → CT
— 860-977 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARTFORD CT
— 860-978 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARTFORD CT
— 860-979 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ROCKVILLE CT
— 860-983 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-984 2XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW LONDON CT
— 860-985 none assigned yet which blocks → METROPCS, INC. 5562 HARTFORD CT
— 860-986 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 HARTFORD CT
— 860-987 2XXX3XXX7XXX8XXX which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 HARTFORD CT
— 860-988 3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SIMSBURY CT
— 860-989 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARTFORD CT
— 860-991 not yet reported which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 NEWBRITAIN CT
— 860-997 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 HARTFORD CT
— 860-998 not yet reported which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 HARTFORD CT
— 861-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST IL
— 861-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-700 not yet reported which blocks → IL
— 861-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 861-950 not yet reported which blocks → IL
— 861-958 not yet reported which blocks → IL
— 861-959 not yet reported which blocks → IL
— 861-976 not yet reported which blocks → IL
— 862-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
— 862-223 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 LIVINGSTON NJ
— 862-226 5XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 MT VIEW NJ
— 862-240 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 NEWARK NJ
— 862-245 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F LIVINGSTON NJ
— 862-256 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWARK NJ
— 862-269 0–9 XXXall 10 · 3 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F ANDOVER NJ
— 862-275 0–9 XXXall 10 · 6 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F NEWTON NJ
— 862-285 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BLOOMFIELD NJ
— 862-301 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWARK NJ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.