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
2019-12-18 470-542 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2019-12-18 520-420 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J TUCSON AZ
2019-12-18 573-530 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H COLUMBIA MO
2019-12-18 586-600 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CENTERLINE MI
2019-12-18 618-617 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC 224C OLNEY IL
2019-12-18 701-960 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H FARGO ND
2019-12-18 718-550 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN06 NY
2019-12-18 825-394 not yet reported which blocks → TELUS 8084 Edmonton —
2019-12-18 825-401 not yet reported which blocks → TELUS 8084 Edmonton —
2019-12-18 825-402 not yet reported which blocks → TELUS 8084 Edmonton —
2019-12-18 825-404 not yet reported which blocks → TELUS 8084 Edmonton —
2019-12-18 848-285 0–9 XXXall 10 · 4 holders which blocks → CSC VOICE, LLC 612K LAKEWOOD NJ
2019-12-18 930-666 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D TERREHAUTE IN
2019-12-18 947-300 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLARKSTON MI
2019-12-18 947-600 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H NORTHVILLE MI
2019-12-18 970-742 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ASPEN CO
2019-12-17 226-559 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 London —
2019-12-17 226-577 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 London —
2019-12-17 252-270 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H ROCKYMOUNT NC
2019-12-17 309-549 1XXX which blocks → TELNYX LLC 073H GALESBURG IL
2019-12-17 316-365 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GODDARD KS
2019-12-17 319-348 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WATERLOO IA
2019-12-17 319-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H VINTON IA
2019-12-17 321-340 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D ORLANDO FL
2019-12-17 325-285 1XXX which blocks → TELNYX LLC 073H SAN ANGELO TX
2019-12-17 330-918 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H YOUNGSTOWN OH
2019-12-17 364-900 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BEE SPRING KY
2019-12-17 423-633 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H CHATTNOOGA TN
2019-12-17 438-432 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-12-17 470-740 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA NE GA
2019-12-17 475-477 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C STAMFORD CT
2019-12-17 502-628 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BARDSTOWN KY
2019-12-17 516-836 0–9 XXXwhole prefix which blocks → CSC WIRELESS, LLC 425J NASSAUZN03 NY
2019-12-17 551-552 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-12-17 563-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CRESCO IA
2019-12-17 563-600 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H LANSING IA
2019-12-17 602-580 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PHOENIX AZ
2019-12-17 619-614 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 657-408 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HUNTITNBCH CA
2019-12-17 816-608 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MO 093F KANSASCITY MO
2019-12-17 820-529 0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PIRU CA
2019-12-17 828-470 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H ASHEVILLE NC
2019-12-17 859-529 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H COVINGTON KY
2019-12-17 910-912 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H FAYETTEVL NC
2019-12-17 913-379 0–9 XXXall 10 · 3 holders which blocks → AVID COMMUNICATIONS, LLC - KS 742D KANSASCITY KS
2019-12-17 979-326 0–9 XXXall 10 · 2 holders which blocks → TELNYX LLC 073H BRYAN TX
2019-12-16 218-514 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H DULUTH MN
2019-12-16 320-426 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H ST CLOUD MN
2019-12-16 337-486 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2019-12-16 575-213 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NM 206F ALAMOGORDO NM

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.