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
2018-04-19 843-891 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F LAUREL BAY SC
2018-04-19 864-453 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ABBEVILLE SC
2018-04-19 873-253 not yet reported which blocks → Bell Canada 8050 Trois-Rivieres —
2018-04-19 978-941 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LOWELL MA
2018-04-18 226-512 not yet reported which blocks → Distributel 082E Preston —
2018-04-18 226-515 not yet reported which blocks → Distributel 082E St. Clements —
2018-04-18 226-516 not yet reported which blocks → Distributel 082E Linwood —
2018-04-18 226-517 not yet reported which blocks → Distributel 082E New Dundee —
2018-04-18 226-518 not yet reported which blocks → Distributel 082E Plattsville —
2018-04-18 226-527 not yet reported which blocks → Distributel 082E St. Jacobs —
2018-04-18 226-528 not yet reported which blocks → Distributel 082E New Hamburg —
2018-04-18 226-529 not yet reported which blocks → Distributel 082E Wellesley —
2018-04-18 315-979 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E CARTHAGE NY
2018-04-18 438-375 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2018-04-18 716-409 0XXX1XXX4XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E SANBORN NY
2018-04-18 731-296 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K TRIMBLE TN
2018-04-18 807-215 not yet reported which blocks → TBayTel 988H Dryden —
2018-04-18 984-409 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E GRANTHAM NC
2018-04-17 226-510 not yet reported which blocks → Distributel 082E Breslau —
2018-04-17 226-522 not yet reported which blocks → Distributel 082E Elmira —
2018-04-17 226-530 not yet reported which blocks → Distributel 082E Drayton —
2018-04-17 226-531 not yet reported which blocks → Distributel 082E Baden —
2018-04-17 226-538 not yet reported which blocks → Distributel 082E Ayr —
2018-04-17 240-591 0–9 XXXall 10 · 8 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - MD 836G HAGERSTOWN MD
2018-04-17 346-334 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2018-04-17 346-335 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J HOUSTON TX
2018-04-17 385-492 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 OGDEN UT
2018-04-17 469-468 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2018-04-17 469-469 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2018-04-17 516-602 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2018-04-17 813-485 0–9 XXXall 10 · 3 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2018-04-17 850-746 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 PENSACOLA FL
2018-04-17 873-247 not yet reported which blocks → Distributel 083E Sawyerville —
2018-04-17 873-248 not yet reported which blocks → Distributel 083E Scotstown —
2018-04-17 873-289 not yet reported which blocks → Distributel 083E St-Adolphe-de-Dudswell —
2018-04-17 873-290 not yet reported which blocks → Distributel 083E St-Felix-de-Kingsey —
2018-04-17 873-291 not yet reported which blocks → Distributel 083E St-Malo —
2018-04-17 873-292 not yet reported which blocks → Distributel 083E Stoke —
2018-04-17 873-293 not yet reported which blocks → Distributel 083E Weedon —
2018-04-17 873-294 not yet reported which blocks → Distributel 083E Windsor —
2018-04-17 873-295 not yet reported which blocks → Distributel 083E Wotton —
2018-04-17 873-298 not yet reported which blocks → Distributel 083E South Durham —
2018-04-17 873-299 not yet reported which blocks → Distributel 083E St-Sebastien (Frontenac Co.) —
2018-04-17 908-404 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 LINDEN NJ
2018-04-17 939-441 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-04-17 939-478 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2018-04-17 947-886 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J PONTIAC MI
2018-04-16 224-291 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2018-04-16 424-407 0–9 XXXall 10 · 6 holders which blocks → METROPCS NETWORKS, LLC 899D W ANGELES CA
2018-04-16 516-601 0–9 XXXall 10 · 4 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN02 NY

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.