NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 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 28
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
2019-10-29 506-770 not yet reported which blocks → Iristel Inc. 346J Saint John —
2019-10-29 517-400 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H LANSING MI
2019-10-29 531-510 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H LINCOLN NE
2019-10-29 581-470 not yet reported which blocks → Iristel Inc. 346J Bonaventure —
2019-10-29 581-489 not yet reported which blocks → Iristel Inc. 346J Sainte-Anne-des-Monts —
2019-10-29 581-780 not yet reported which blocks → Iristel Inc. 346J Havre-Saint-Pierre —
2019-10-29 581-871 not yet reported which blocks → Iristel Inc. 346J Natashquan —
2019-10-29 605-981 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 RAPID CITY SD
2019-10-29 672-996 not yet reported which blocks → TELUS Mobility 8301 Prince George —
2019-10-29 672-997 not yet reported which blocks → TELUS Mobility 8301 Prince George —
2019-10-29 709-799 not yet reported which blocks → Iristel Inc. 346J St. John's —
2019-10-29 769-356 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PICAYUNE MS
2019-10-29 816-710 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H KANSASCITY MO
2019-10-29 941-271 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 SARASOTA FL
2019-10-28 346-407 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2019-10-28 430-266 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 EMORY TX
2019-10-28 431-700 not yet reported which blocks → Iristel Inc. 346J Winnipeg —
2019-10-28 581-471 not yet reported which blocks → Iristel Inc. 346J Chandler —
2019-10-28 639-700 not yet reported which blocks → Iristel Inc. 346J Saskatoon —
2019-10-28 639-707 not yet reported which blocks → Iristel Inc. 346J Regina —
2019-10-28 712-317 0–9 XXXall 10 · 4 holders which blocks → AIRUS, INC - IA 423H SIOUX CITY IA
2019-10-28 765-756 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - IN 097D RICHMOND IN
2019-10-25 240-709 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2019-10-25 252-310 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GATESVILLE NC
2019-10-25 267-876 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
2019-10-25 302-546 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2019-10-25 314-866 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LADUE MO
2019-10-25 314-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H KIRKWOOD MO
2019-10-25 346-510 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H HOUSTON TX
2019-10-25 365-994 not yet reported which blocks → TELUS Mobility 8303 Brampton —
2019-10-25 409-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BEAUMONT TX
2019-10-25 417-377 2XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H MANES MO
2019-10-25 458-245 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H EUGENE OR
2019-10-25 475-261 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2019-10-25 573-946 0XXX1XXX3XXX6XXX · 4 holders which blocks → FRACTEL, LLC 965H POCAHONTAS MO
2019-10-25 605-606 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H SIOUX FLS SD
2019-10-25 636-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ST CLAIR MO
2019-10-25 650-507 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 PALO ALTO CA
2019-10-25 650-512 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2019-10-25 672-998 not yet reported which blocks → TELUS Mobility 8301 Abbotsford —
2019-10-25 718-540 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN03 NY
2019-10-25 785-600 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H TOPEKA KS
2019-10-25 867-344 not yet reported which blocks → Bell Mobility 6574 Kugaaruk —
2019-10-25 867-345 not yet reported which blocks → Bell Mobility 6574 Taloyoak —
2019-10-25 867-346 not yet reported which blocks → Bell Mobility 6574 Gjoa Haven —
2019-10-25 867-347 not yet reported which blocks → Bell Mobility 6574 Pangnirtung —
2019-10-25 909-778 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2019-10-25 909-813 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2019-10-25 915-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H EL PASO TX
2019-10-25 937-930 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H DAYTON OH

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.