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 207
CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 263
BELL ATLANTIC MOBILE, INC 91
UNITED STATES CELLULAR - ME 44
CONSOLIDATED COMMUNICATIONS OF MAINE COMPANY 42
NEW CINGULAR WIRELESS PCS, LLC - DC 37
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
— 207-483 0XXX1XXX3XXX5XXX7XXX8XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 COLUMBIA ME
— 207-484 4XXX6XXX8XXX · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 VAN BUREN ME
— 207-485 9XXX which blocks → UNITED STATES CELLULAR - ME 6291 AUGUSTA ME
— 207-486 3XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 WILSONS ML ME
— 207-487 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 PITTSFIELD ME
— 207-488 5XXX7XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 EASTON ME
— 207-490 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 SANFORD ME
— 207-491 none assigned yet which blocks → UNITED STATES CELLULAR - ME 6291 FARMINGTON ME
— 207-492 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 CARIBOU ME
— 207-493 0XXX1XXX2XXX5XXX8XXX9XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 CARIBOU ME
— 207-495 0XXX1XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 BELGRADE ME
— 207-496 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 CARIBOU ME
— 207-497 1XXX4XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 JONESPORT ME
— 207-498 0XXX5XXX7XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 CARIBOU ME
— 207-499 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 GOODWINSML ME
— 207-501 0XXX2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → NUSO, LLC 478J BERWICK ME
— 207-503 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - ME 454F SCARBOROGH ME
— 207-510 1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SCARBOROGH ME
— 207-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX ME
— 207-512 0XXX3XXX4XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J AUGUSTA ME
— 207-514 1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LEWISTON ME
— 207-515 5XXX8XXX9XXX · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 NORWAY ME
— 207-517 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - ME 382D PORTLAND ME
— 207-521 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 HOULTON ME
— 207-524 3XXX5XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMMUNICATIONS OF MAINE COMPANY 0015 LEEDS ME
— 207-525 2XXX7XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 MONROE ME
— 207-526 none assigned yet which blocks → THE ISLAND TELEPHONE COMPANY 0007 SWANS IS ME
— 207-527 0XXX which blocks → OXFORD WEST TELEPHONE COMPANY 3314 NO NORWAY ME
— 207-528 1XXX3XXX6XXX · 3 holders which blocks → CONSOLIDATED COMMUNICATIONS OF MAINE COMPANY 3316 PATTEN ME
— 207-529 0XXX6XXX · 2 holders which blocks → TIDEWATER TELECOM, INC. 3311 BREMEN ME
— 207-532 none assigned yet which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 HOULTON ME
— 207-533 3XXX which blocks → OXFORD WEST TELEPHONE COMPANY 3314 UPTON ME
— 207-534 2XXX9XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 ROCKWOOD ME
— 207-535 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMMIO, LLC 939H PORTLAND ME
— 207-537 none assigned yet which blocks → UNION RIVER TEL. CO. 0027 OTIS ME
— 207-538 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 HOULTON ME
— 207-539 0XXX1XXX3XXX5XXX6XXX7XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 OXFORD ME
— 207-540 0XXX1XXX2XXX3XXX4XXX9XXX · 3 holders which blocks → UNITED STATES CELLULAR - ME 6291 PRESQUE IS ME
— 207-541 1XXX8XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 PORTLAND ME
— 207-542 none assigned yet which blocks → UNITED STATES CELLULAR - ME 6291 ROCKLAND ME
— 207-543 1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 FRENCHVL ME
— 207-545 5XXX8XXX · 2 holders which blocks → OXFORD WEST TELEPHONE COMPANY 3314 ROXBURYPND ME
— 207-546 0XXX1XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 MILBRIDGE ME
— 207-547 5XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMMUNICATIONS OF MAINE COMPANY 3313 SIDNEY ME
— 207-548 1XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 SEARSPORT ME
— 207-549 0XXX2XXX6XXX8XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 NOWHITEFLD ME
— 207-550 0–9 XXXall 10 · 8 holders which blocks → CRC COMMUNICATIONS OF MAINE, INC. - ME 1255 PORTLAND ME
— 207-551 none assigned yet which blocks → UNITED STATES CELLULAR - ME 6291 PRESQUE IS ME
— 207-552 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 PORTLAND ME
— 207-553 0XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → MID-MAINE TELPLUS DBA MID-MAINE COMMUNICATIONS 4121 PORTLAND ME

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.