NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 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, last 30 days — NPA 774
NEW CINGULAR WIRELESS PCS, LLC - DC 1
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
2001-03-27 774-568 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EASTON MA
2001-03-27 774-641 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WORCESTER MA
2001-03-27 774-642 6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HOLDEN MA
2001-03-27 774-888 6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J FALL RIVER MA
2001-03-27 774-893 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DOVER MA
2001-03-20 774-202 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J NEWBEDFORD MA
2001-03-20 774-203 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ATTLEBORO MA
2001-03-20 774-204 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J FRAMINGHAM MA
2001-03-20 774-233 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J HOLLISTON MA
2001-03-20 774-324 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MEDWAY MA
2001-03-20 774-330 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BARNSTABLE MA
2001-03-20 774-369 0XXX1XXX2XXX3XXX4XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 MARLBORO MA
2001-03-20 774-396 0XXX2XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MILFORD MA
2001-03-20 774-421 9XXX which blocks → PAETEC ITEL, LLC 829J WAYLAND MA
2001-03-20 774-430 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORTON MA
2001-03-20 774-488 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FALL RIVER MA
2001-03-20 774-516 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EBRIDGEWTR MA
2001-03-20 774-535 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 WORCESTER MA
2001-03-20 774-565 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → COMCAST IP PHONE, LLC 318J REHOBOTH MA
2001-03-20 774-619 7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BRIDGEWTR MA
2001-03-20 774-719 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J MANSFIELD MA
2001-03-20 774-760 0XXX1XXX2XXX3XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WESTBORO MA
2001-03-20 774-763 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FALMOUTH MA
2001-03-20 774-826 0–9 XXXall 10 · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BROCKTON MA
2001-03-20 774-827 9XXX which blocks → PAETEC ITEL, LLC 829J NORTHBORO MA
2001-03-20 774-907 7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BELLINGHAM MA
2001-03-20 774-961 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TAUNTON MA
2001-03-20 774-987 7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NO ATTLEBO MA
2001-03-20 774-999 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FRAMINGHAM MA
2001-03-19 774-215 2XXX4XXX5XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J FOXBORO MA
2001-03-19 774-232 5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WORCESTER MA
2001-03-19 774-306 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NO ATTLEBO MA
2001-03-19 774-348 none assigned yet which blocks → PAETEC ITEL, LLC 829J MARLBORO MA
2001-03-19 774-408 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HARWICH MA
2001-03-19 774-670 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WORCESTER MA
2001-03-19 774-759 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J HOPKINTON MA
2001-03-19 774-810 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HYANNIS MA
2001-03-19 774-872 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J DIGHTON MA
— 774-209 2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HARWICH MA
— 774-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-216 3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 BREWSTER MA
— 774-224 1XXX3XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MA 892D CHARLTON MA
— 774-225 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 ATTLEBORO MA
— 774-268 3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 DENNIS MA
— 774-291 4XXX5XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 FRANKLIN MA
— 774-292 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 HOPKINTON MA
— 774-296 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - MA 892D BROCKTON MA
— 774-298 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E OAKHAM MA
— 774-300 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 FOXBORO MA
— 774-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA

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.