NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2016-07-29 786-862 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 KEYS FL
2016-07-29 803-862 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COLUMBIA SC
2016-07-29 915-330 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2016-07-28 205-859 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GARDENDALE AL
2016-07-28 256-804 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAZELGREEN AL
2016-07-28 319-299 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 BELLEPLAIN IA
2016-07-28 385-289 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F OGDEN UT
2016-07-28 563-863 not yet reported which blocks → NEIT SERVICES LLC - IA 859H POSTVILLE IA
2016-07-28 573-963 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 NEW MADRID MO
2016-07-28 641-432 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 FORESTCITY IA
2016-07-28 717-663 0–9 XXXall 10 · 4 holders which blocks → CTSI, INC. - PA 7513 LANCASTER PA
2016-07-28 786-865 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2016-07-28 806-551 1XXX2XXX6XXX9XXX · 4 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 LITTLEFLD TX
2016-07-28 910-766 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E DUNN NC
2016-07-28 980-550 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E LOWELL NC
2016-07-28 984-226 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E KENLY NC
2016-07-27 325-757 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 TRENT TX
2016-07-27 343-317 not yet reported which blocks → Distributel 082E Ottawa-Hull —
2016-07-27 346-773 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-07-27 365-206 not yet reported which blocks → Distributel 082E Caledonia —
2016-07-27 365-222 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Niagara Falls —
2016-07-27 438-315 not yet reported which blocks → Distributel 083E Montreal —
2016-07-27 515-582 0–9 XXXall 10 · 7 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 MADRID IA
2016-07-27 580-972 0XXX9XXX · 2 holders which blocks → WINDSTREAM OKLAHOMA, INC. 1965 STERLING OK
2016-07-27 587-943 not yet reported which blocks → Distributel 081E Calgary —
2016-07-27 601-419 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E COLUMBIA MS
2016-07-27 609-732 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F SOMERS PT NJ
2016-07-27 628-205 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2016-07-27 647-665 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2016-07-27 669-207 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNJS SOUTH CA
2016-07-27 682-412 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F WEATHERFD TX
2016-07-27 682-760 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2016-07-27 727-351 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E CLEARWATER FL
2016-07-27 774-762 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWBEDFORD MA
2016-07-27 778-248 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A New Westminster —
2016-07-27 778-957 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2016-07-27 857-772 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2016-07-27 870-912 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C NASHVILLE AR
2016-07-27 872-762 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN06 IL
2016-07-27 941-413 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E SARASOTA FL
2016-07-26 312-796 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2016-07-26 325-312 0–9 XXXall 10 · 3 holders which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 LORAINE TX
2016-07-26 325-313 0–9 XXXall 10 · 4 holders which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 BAIRD TX
2016-07-26 343-602 not yet reported which blocks → Bell Canada 8051 Ottawa-Hull —
2016-07-26 513-968 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON OH
2016-07-26 561-903 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2016-07-26 581-371 not yet reported which blocks → Videotron Ltd. 8306 Saint-Malachie —
2016-07-26 647-577 not yet reported which blocks → TELUS Integrated Communications 2782 Toronto —
2016-07-26 806-615 0XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 WHEELER TX
2016-07-26 806-616 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → TEXAS WINDSTREAM, LLC 2153 PLAINS TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.