NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2002-09-17 937-631 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRINGFLD OH
2002-09-17 937-638 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SIDNEY OH
2002-09-17 989-415 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BAY CITY MI
2002-09-17 989-780 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
2002-09-16 408-329 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SUNNYVALE CA
2002-09-16 440-316 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NORTHEATON OH
2002-09-16 517-554 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ALBION MI
2002-09-16 740-464 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTSMOUTH OH
2002-09-16 763-234 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2002-09-16 845-821 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
2002-09-16 940-225 not yet reported which blocks → WEB FIRE COMMUNICATIONS, INC. - TX 2985 VERNON TX
2002-09-12 253-880 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBURN WA
2002-09-12 253-881 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 PUYALLUP WA
2002-09-12 253-882 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TACOMA WA
2002-09-12 253-883 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 TACOMAWVLY WA
2002-09-12 541-418 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LINCOLN CY OR
2002-09-12 601-690 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 COLUMBIA MS
2002-09-12 603-686 0–9 XXXall 10 · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2002-09-12 614-383 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 GAHANNA OH
2002-09-12 662-576 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 RIPLEY MS
2002-09-12 662-586 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PONTOTOC MS
2002-09-12 662-593 3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 IUKA MS
2002-09-12 662-594 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 CORINTH MS
2002-09-12 662-596 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BOONEVILLE MS
2002-09-12 662-597 1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 AMORY MS
2002-09-12 662-598 1XXX2XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 NEW ALBANY MS
2002-09-12 702-234 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-09-12 702-292 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-09-12 702-325 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-09-12 702-327 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-09-12 702-328 none assigned yet which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-09-12 702-336 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-09-12 936-647 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CONROE TX
2002-09-12 979-246 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEEDVILLE TX
2002-09-11 250-688 not yet reported which blocks → TELUS Mobility 8301 Invermere —
2002-09-11 250-919 not yet reported which blocks → TELUS Mobility 8301 Cranbrook —
2002-09-11 330-612 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
2002-09-11 330-635 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MEDINA OH
2002-09-11 416-388 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2002-09-11 417-262 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → UNITED STATES CELLULAR - MO 6275 LAMAR MO
2002-09-11 509-977 1XXX2XXX4XXX7XXX9XXX · 4 holders which blocks → INLAND CELLULAR LLC 1477 CRESTON WA
2002-09-11 509-978 1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 NESPELEM WA
2002-09-11 509-983 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 STARBUCK WA
2002-09-11 740-462 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 MT VERNON OH
2002-09-11 740-485 6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MT VERNON OH
2002-09-11 832-233 none assigned yet which blocks → METROPCS, INC. 5562 HUMBLE TX
2002-09-11 870-221 none assigned yet which blocks → WINDSTREAM ARKANSAS, INC. 1691 MARSHALL AR
2002-09-11 937-247 0–9 XXXall 10 · 4 holders which blocks → CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MSBGWCRLTN OH
2002-09-11 937-619 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B CENTERVLLE OH
2002-09-10 209-688 not yet reported which blocks → METROPCS, INC. 5562 STOCKTON CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.