NumberResearch Membership · Data 10/02/2026

Recent prefix assignments

371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 10/02/2026

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
NEW CINGULAR WIRELESS PCS, LLC - IL 21
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 508-627 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 EDGARTOWN MA
— 508-628 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FRAMINGHAM MA
— 508-629 3XXX4XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VINEYRDHVN MA
— 508-630 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 MARLBORO MA
— 508-631 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
— 508-632 3XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HARWICH MA
— 508-633 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 508-634 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 MILFORD MA
— 508-635 4XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WORCESTER MA
— 508-636 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WESTPORT MA
— 508-638 8XXX which blocks → PAETEC ITEL, LLC 829J BROCKTON MA
— 508-639 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J SOUTHGATE MA
— 508-640 5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WEBSTER MA
— 508-641 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALPOLE MA
— 508-642 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FALL RIVER MA
— 508-643 8XXX which blocks → VERIZON NEW ENGLAND INC. 9102 NO ATTLEBO MA
— 508-644 0XXX1XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ASSONET MA
— 508-645 0XXX4XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 CHILMARK MA
— 508-646 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-647 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NATICK MA
— 508-648 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 OSTERVILLE MA
— 508-650 8XXX which blocks → VERIZON NEW ENGLAND INC. 9102 NATICK MA
— 508-651 6XXX which blocks → VERIZON NEW ENGLAND INC. 9102 NATICK MA
— 508-652 5XXX which blocks → VERIZON NEW ENGLAND INC. 9102 NATICK MA
— 508-653 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NATICK MA
— 508-654 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NATICK MA
— 508-655 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 NATICK MA
— 508-657 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → COMCAST IP PHONE, LLC 318J BELLINGHAM MA
— 508-658 1XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - MA 892D MARLBORO MA
— 508-660 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WALPOLE MA
— 508-661 3XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 FRAMINGHAM MA
— 508-662 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 508-663 6XXX7XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRAMINGHAM MA
— 508-664 4XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WELLFLEET MA
— 508-665 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J FRAMINGHAM MA
— 508-666 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 ORLEANS MA
— 508-667 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WORCESTER MA
— 508-668 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WALPOLE MA
— 508-669 0XXX2XXX3XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW ENGLAND INC. 9102 DIGHTON MA
— 508-670 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 EDGARTOWN MA
— 508-671 7XXX which blocks → VERIZON NEW ENGLAND INC. 9102 WEBSTER MA
— 508-672 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-673 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-674 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-675 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-676 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-677 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-678 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-679 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
— 508-680 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NANTUCKET MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 10/02/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.