NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2001-09-27 570-527 1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks → METROPCS, INC. 5562 POTTSVILLE PA
2001-09-27 614-441 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2001-09-27 646-326 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2001-09-27 678-874 not yet reported which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
2001-09-27 678-875 not yet reported which blocks → PAETEC ITEL, LLC 829J ATLANTA GA
2001-09-27 740-994 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LANCASTER OH
2001-09-27 774-368 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HYANNIS MA
2001-09-27 814-483 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 SOMERSET PA
2001-09-27 832-298 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2001-09-27 864-640 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 GREENVILLE SC
2001-09-27 864-641 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SPARTANBG SC
2001-09-27 864-642 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ANDERSON SC
2001-09-27 864-643 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CLEMSON SC
2001-09-27 865-394 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → UNITED STATES CELLULAR - TN 6278 KNOXVILLE TN
2001-09-27 905-214 not yet reported which blocks → Bell Canada 8051 Cooksville —
2001-09-27 905-495 not yet reported which blocks → Bell Canada 8051 Brampton —
2001-09-27 918-306 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CUSHING OK
2001-09-26 202-294 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2001-09-26 204-262 not yet reported which blocks → MTS Inc. 8088 Winnipeg —
2001-09-26 207-205 6XXX7XXX8XXX · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 BIDDEFORD ME
2001-09-26 213-986 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LSAN DA 01 CA
2001-09-26 256-398 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 RUSSELLVL AL
2001-09-26 386-864 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PALM COAST FL
2001-09-26 416-320 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2001-09-26 416-660 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2001-09-26 416-906 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2001-09-26 418-999 not yet reported which blocks → TELUS Mobility 8303 Quebec —
2001-09-26 514-618 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2001-09-26 514-777 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2001-09-26 515-228 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → HUXLEY COMMUNICATIONS COOPERATIVE - IA 5852 SLATER IA
2001-09-26 605-521 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 SIOUX FLS SD
2001-09-26 613-808 not yet reported which blocks → TELUS Mobility 8303 Ottawa-Hull —
2001-09-26 613-880 not yet reported which blocks → TELUS Mobility 8303 Ottawa-Hull —
2001-09-26 706-536 0XXX which blocks → METROPCS, INC. 5562 COLUMBUS GA
2001-09-26 720-422 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2001-09-26 812-583 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BEDFORD IN
2001-09-26 817-864 1XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 EULESS TX
2001-09-26 828-734 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WAYNESVL NC
2001-09-26 904-803 none assigned yet which blocks → METROPCS, INC. 5562 JACKSONVL FL
2001-09-26 907-764 not yet reported which blocks → GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION 6872 ANCHORAGE AK
2001-09-26 912-707 0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 REGISTER GA
2001-09-26 970-443 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FT COLLINS CO
2001-09-26 971-732 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 BEAVERTON OR
2001-09-25 202-412 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN1 DC
2001-09-25 204-470 not yet reported which blocks → MTS Inc. 991B Winnipeg —
2001-09-25 204-790 not yet reported which blocks → MTS Inc. 8088 Winnipeg —
2001-09-25 204-928 not yet reported which blocks → MTS Inc. 8088 Winnipeg —
2001-09-25 204-929 not yet reported which blocks → MTS Inc. 8088 Winnipeg —
2001-09-25 207-939 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PORTLAND ME
2001-09-25 214-985 8XXX which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX

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.