NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-05-14 639-987 not yet reported which blocks → Distributel 081E Whitewood —
2018-05-14 639-988 not yet reported which blocks → Distributel 081E Wilcox —
2018-05-14 639-989 not yet reported which blocks → Distributel 081E Wolseley —
2018-05-14 775-436 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F LUND NV
2018-05-14 940-274 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F MINERLWLLS TX
2018-05-11 480-687 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-05-11 480-936 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ
2018-05-11 507-229 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E NICOLLET MN
2018-05-11 639-632 not yet reported which blocks → Distributel 081E Lumsden —
2018-05-11 639-633 not yet reported which blocks → Distributel 081E Maryfield —
2018-05-11 639-634 not yet reported which blocks → Distributel 081E Milestone —
2018-05-11 639-691 not yet reported which blocks → Distributel 081E Montmartre —
2018-05-11 639-692 not yet reported which blocks → Distributel 081E Moosomin —
2018-05-11 639-693 not yet reported which blocks → Distributel 081E Nokomis —
2018-05-11 639-694 not yet reported which blocks → Distributel 081E Odessa —
2018-05-11 639-695 not yet reported which blocks → Distributel 081E Pense —
2018-05-11 639-977 not yet reported which blocks → Distributel 081E Punnichy —
2018-05-11 639-978 not yet reported which blocks → Distributel 081E Qu'Appelle —
2018-05-11 782-567 not yet reported which blocks → Bragg Communications Inc. 421G Baddeck —
2018-05-11 803-809 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ORANGEBURG SC
2018-05-11 804-985 1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J REEDVILLE VA
2018-05-10 469-479 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H PLANO TX
2018-05-10 469-482 0–9 XXXall 10 · 6 holders which blocks → ONE RING NETWORKS, INC. 065J DLFTWTARPT TX
2018-05-10 551-261 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2018-05-10 551-402 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2018-05-10 639-615 not yet reported which blocks → Distributel 081E Bethune —
2018-05-10 639-616 not yet reported which blocks → Distributel 081E Broadview —
2018-05-10 639-617 not yet reported which blocks → Distributel 081E Craik —
2018-05-10 639-619 not yet reported which blocks → Distributel 081E Davidson —
2018-05-10 639-620 not yet reported which blocks → Distributel 081E Earl Grey —
2018-05-10 639-621 not yet reported which blocks → Distributel 081E Francis —
2018-05-10 639-622 not yet reported which blocks → Distributel 081E Fort Qu'Appelle —
2018-05-10 639-623 not yet reported which blocks → Distributel 081E Grenfell —
2018-05-10 639-626 not yet reported which blocks → Distributel 081E Imperial —
2018-05-10 639-627 not yet reported which blocks → Distributel 081E Indian Head —
2018-05-10 639-628 not yet reported which blocks → Distributel 081E Kipling —
2018-05-10 639-629 not yet reported which blocks → Distributel 081E Lemberg —
2018-05-10 757-978 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J NWPTNWSZN2 VA
2018-05-10 769-215 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E FAYETTE MS
2018-05-10 850-755 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G TALLAHASSE FL
2018-05-10 850-848 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C TALLAHASSE FL
2018-05-10 913-329 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H KANSASCITY KS
2018-05-09 210-741 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2018-05-09 249-875 not yet reported which blocks → TELUS Mobility 8303 Moonstone —
2018-05-09 249-876 not yet reported which blocks → TELUS Mobility 8303 Moonstone —
2018-05-09 269-636 2XXX6XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BLOOMINGDL MI
2018-05-09 469-476 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F FRISCO TX
2018-05-09 480-770 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-09 518-904 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E SCHROON LK NY
2018-05-09 581-960 not yet reported which blocks → Distributel 083E Boischatel —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.