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
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-10-16 667-837 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 PT DEPOSIT MD
2018-10-16 825-214 not yet reported which blocks → TELUS 8084 Didsbury —
2018-10-16 867-320 not yet reported which blocks → Bell Mobility 6574 Pond Inlet —
2018-10-15 226-753 not yet reported which blocks → Bell Mobility 6574 Kitchener-Waterloo —
2018-10-15 236-827 not yet reported which blocks → TELUS 8086 Mission —
2018-10-15 442-303 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 OCSD CRLS CA
2018-10-15 470-619 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E KINGSTON GA
2018-10-15 479-352 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALMA AR
2018-10-15 479-370 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ALMA AR
2018-10-15 501-601 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AR 348F MALVERN AR
2018-10-15 516-615 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2018-10-15 531-227 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - NE 549E CLARKSON NE
2018-10-15 626-489 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D EL MONTE CA
2018-10-15 631-690 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2018-10-15 639-994 not yet reported which blocks → TELUS Mobility 8303 Saskatoon —
2018-10-15 667-269 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 ELKTON MD
2018-10-15 667-295 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 CROFTON MD
2018-10-15 667-332 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC.- MD 2593 NEWWINDSOR MD
2018-10-15 667-366 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 HAMPSTEAD MD
2018-10-15 667-372 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 CAMBRIDGE MD
2018-10-15 667-373 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC.- MD 2593 NORTHBEACH MD
2018-10-15 667-686 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 ELLICOTTCY MD
2018-10-15 667-722 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 GLENWOOD MD
2018-10-15 667-946 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC.- MD 2593 CHURCHVL MD
2018-10-15 725-212 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2018-10-15 805-940 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D OXNARD CA
2018-10-15 901-459 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SOMERVILLE TN
2018-10-15 909-704 0–9 XXXall 10 · 2 holders which blocks → METROPCS NETWORKS, LLC 899D ONTARIO CA
2018-10-15 929-496 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN04 NY
2018-10-15 971-355 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-12 251-651 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E BAYMINETTE AL
2018-10-12 318-738 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 MONROE LA
2018-10-12 332-331 0–9 XXXall 10 · 3 holders which blocks → EDGETEL, LLC 179J NWYRCYZN01 NY
2018-10-11 236-334 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2018-10-11 318-720 0XXX1XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E BENTON LA
2018-10-11 346-370 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2018-10-11 365-292 not yet reported which blocks → Bell Mobility 6574 Oakville —
2018-10-11 463-214 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D CICERO IN
2018-10-11 507-731 0XXX4XXX6XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ZUMBROTA MN
2018-10-11 561-599 0–9 XXXall 10 · 4 holders which blocks → INVOXIO INCORPORATED 158H DELRAY BCH FL
2018-10-11 561-770 0–9 XXXall 10 · 8 holders which blocks → INVOXIO INCORPORATED 158H BOYNTONBCH FL
2018-10-11 561-788 0–9 XXXall 10 · 4 holders which blocks → INVOXIO INCORPORATED 158H WPALMBEACH FL
2018-10-11 561-888 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G WPALMBEACH FL
2018-10-11 581-398 not yet reported which blocks → Bell Mobility 6574 Quebec —
2018-10-11 585-499 0–9 XXXwhole prefix which blocks → NUSO, LLC 551G ROCHESTER NY
2018-10-11 682-275 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EULESS TX
2018-10-11 682-288 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WEATHERFD TX
2018-10-11 754-231 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2018-10-11 762-239 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D CLARKESVL GA
2018-10-11 769-229 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRANDON MS

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.