NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2002-03-20 440-506 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 ELYRIA OH
2002-03-20 450-236 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Actonvale —
2002-03-20 505-692 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 ESPANOLA NM
2002-03-20 505-718 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NM
2002-03-20 519-706 not yet reported which blocks → TELUS Mobility 8303 Port Elgin —
2002-03-20 519-708 not yet reported which blocks → TELUS Mobility 8303 Port Elgin —
2002-03-20 575-494 7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 DEMING NM
2002-03-20 613-887 not yet reported which blocks → TELUS Integrated Communications 2782 Kingston —
2002-03-20 636-544 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2002-03-20 636-577 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST PETERS MO
2002-03-20 660-853 0XXX2XXX7XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 MARYVILLE MO
2002-03-20 814-218 2XXX3XXX4XXX5XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 ERIE PA
2002-03-20 814-384 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 ERIE PA
2002-03-20 920-463 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RANDOLPH WI
2002-03-20 920-464 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 CHILTON WI
2002-03-19 209-819 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2002-03-19 276-594 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GATE CITY VA
2002-03-19 304-962 1XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 HNTNGTNZN1 WV
2002-03-19 304-963 3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 HNTNGTNZN2 WV
2002-03-19 304-964 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 SCOTTDEPOT WV
2002-03-19 309-714 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 GENESEO IL
2002-03-19 314-221 none assigned yet which blocks → T-MOBILE USA, INC. 6529 KIRKWOOD MO
2002-03-19 361-331 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 C CHRISTI TX
2002-03-19 402-412 not yet reported which blocks → IMON COMMUNICATIONS LLC 7021 SOSIOUX CY NE
2002-03-19 419-672 0XXX1XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
2002-03-19 419-931 0XXX1XXX2XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - OH 464C PERRYSBURG OH
2002-03-19 517-721 0XXX7XXX9XXX · 3 holders which blocks → MICHIGAN BELL TEL CO 9323 LANSING MI
2002-03-19 540-284 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 DAHLGREN VA
2002-03-19 540-709 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 KINGGEORGE VA
2002-03-19 559-736 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2002-03-19 585-507 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2002-03-18 262-365 1XXX3XXX4XXX7XXX8XXX9XXX which blocks → WISCONSIN BELL INC 9327 WEST BEND WI
2002-03-18 276-601 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 GALAX VA
2002-03-18 318-237 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2002-03-18 320-304 6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 ALEXANDRIA MN
2002-03-18 540-812 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J CULPEPER VA
2002-03-18 571-262 1XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERNDON VA
2002-03-18 609-481 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HAMMONTON NJ
2002-03-18 609-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MAYS LDG NJ
2002-03-18 609-916 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 PLEASANTVL NJ
2002-03-18 712-310 2XXX3XXX4XXX5XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COUNCILBLF IA
2002-03-18 715-401 5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RHINELANDR WI
2002-03-18 781-460 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 WOBURN MA
2002-03-18 803-667 3XXX4XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2002-03-18 810-881 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PECK MI
2002-03-18 857-234 3XXX4XXX5XXX7XXX8XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2002-03-18 864-634 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON SC
2002-03-18 937-510 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2002-03-15 202-303 9XXX which blocks → VERIZON WASHINGTON DC, INC. 9211 WSHNGTNZN1 DC
2002-03-15 270-629 0XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTH CENTRAL TELCOM, LLC 5620 GLASGOW KY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.