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 860
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 325
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 63
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 60
TELEPORT COMMUNICATIONS AMERICA, LLC - CT 56
PAETEC ITEL, LLC 50
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
2024-03-12 860-401 0XXX1XXX · 2 holders which blocks → ONVOY, LLC - CT 639C DANIELSON CT
2023-06-15 860-981 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J WATERTOWN CT
2022-10-25 860-743 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CT 639C MANCHESTER CT
2021-11-22 860-699 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F LEDYARD CT
2020-11-10 860-472 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J HARTFORD CT
2016-10-12 860-914 0XXX1XXX2XXX5XXX7XXX8XXX · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEWBRITAIN CT
2016-06-21 860-500 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 HARTFORD CT
2016-06-21 860-600 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F LITCHFIELD CT
2016-01-28 860-300 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWICH CT
2015-12-04 860-936 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 HARTFORD CT
2015-11-23 860-200 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2015-11-04 860-900 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HARTFORD CT
2015-09-04 860-996 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 HARTFORD CT
2015-04-23 860-980 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F MYSTIC CT
2015-02-23 860-960 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 TORRINGTON CT
2015-01-21 860-969 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CT 639C HARTFORD CT
2014-12-15 860-937 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J HARTFORD CT
2014-12-09 860-934 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NORWICH CT
2014-10-01 860-931 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WILLIMNTIC CT
2014-07-21 860-750 0–9 XXXall 10 · 6 holders which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 NEWMILFORD CT
2014-07-21 860-994 0–9 XXXall 10 · 4 holders which blocks → SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 HARTFORD CT
2014-06-26 860-650 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F PAWCATUCK CT
2014-04-07 860-809 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F LEBANON CT
2014-04-07 860-909 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F WINSTED CT
2013-05-31 860-850 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F NIANTIC CT
2013-04-11 860-390 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F LYME CT
2013-04-11 860-400 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F LEDYARD CT
2013-04-11 860-407 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F JEWETTCITY CT
2013-04-11 860-744 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F CLINTON CT
2013-04-08 860-785 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G HARTFORD CT
2013-02-27 860-207 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 WILLIMNTIC CT
2012-11-20 860-800 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NORWICH CT
2012-11-20 860-999 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HARTFORD CT
2012-04-27 860-603 0–9 XXXall 10 · 8 holders which blocks → COMCAST IP PHONE, LLC 318J COLCHESTER CT
2012-04-23 860-310 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J HARTFORD CT
2012-04-02 860-503 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARTFORD CT
2011-12-06 860-215 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWICH CT
2011-11-15 860-837 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J HARTFORD CT
2011-03-10 860-897 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 HARTFORD CT
2011-03-10 860-993 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 HARTFORD CT
2011-03-04 860-856 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J HARTFORD CT
2011-03-03 860-709 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARTFORD CT
2011-03-03 860-924 0–9 XXXall 10 · 4 holders which blocks → YMAX COMMUNICATIONS CORP. - CT 350E HARTFORD CT
2010-09-21 860-771 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILLIMNTIC CT
2010-08-23 860-222 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F NORWICH CT
2010-07-09 860-990 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 HARTFORD CT
2010-03-19 860-955 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HARTFORD CT
2010-03-15 860-717 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CT 7143 NEWMILFORD CT
2010-02-15 860-880 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F THOMASTON CT
2009-12-03 860-574 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NEW LONDON CT

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.