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
2020-11-09 623-303 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2020-11-09 661-955 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ARVIN CA
2020-11-09 669-348 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H SUNNYVALE CA
2020-11-09 720-792 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CO 026D DENVER CO
2020-11-09 734-496 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2020-11-09 762-262 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBUS GA
2020-11-09 769-255 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E COLUMBIA MS
2020-11-09 786-744 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J MIAMI FL
2020-11-09 825-815 not yet reported which blocks → Fibernetics Corporation 464D Carstairs —
2020-11-09 825-816 not yet reported which blocks → Fibernetics Corporation 464D Crossfield —
2020-11-09 825-817 not yet reported which blocks → Fibernetics Corporation 464D Langdon —
2020-11-09 825-860 not yet reported which blocks → Fibernetics Corporation 464D Edmonton —
2020-11-09 858-667 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNDG LVTA CA
2020-11-09 862-657 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C PATERSON NJ
2020-11-09 862-662 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C PASSAIC NJ
2020-11-09 928-968 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AZ 630E PRESCOTT AZ
2020-11-09 947-237 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2020-11-09 949-998 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RNCHOVIEJO CA
2020-11-06 213-693 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 14 CA
2020-11-06 240-443 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MD 876D WSHNGTNZN6 MD
2020-11-06 240-945 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2020-11-06 240-956 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MD 876D WSHNGTNZN2 MD
2020-11-06 249-484 not yet reported which blocks → ExaTEL Inc. 3147 Udora —
2020-11-06 346-536 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SATSUMA TX
2020-11-06 346-645 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C TOMBALL TX
2020-11-06 424-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H REDONDO CA
2020-11-06 442-744 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H BRIDGEPORT CA
2020-11-06 442-966 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H RIDGECREST CA
2020-11-06 469-956 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C FRISCO TX
2020-11-06 657-462 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-11-06 657-466 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-11-06 657-472 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2020-11-06 657-944 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GARDEN GRV CA
2020-11-06 734-463 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C PLYMOUTH MI
2020-11-06 858-358 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C EL CAJON CA
2020-11-06 867-355 not yet reported which blocks → Bell Mobility 6574 Norman Wells —
2020-11-06 901-582 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MEMPHIS TN
2020-11-06 949-618 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 IRVINE CA
2020-11-06 951-899 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H RIVERSIDE CA
2020-11-06 971-571 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E GRESHAM OR
2020-11-05 431-945 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-11-05 438-246 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-11-05 747-302 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SUNLD TJNG CA
2020-11-05 805-849 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CONEJO CA
2020-11-05 825-426 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-11-05 825-982 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-11-05 912-504 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E BRUNSWICK GA
2020-11-04 254-418 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KILLEEN TX
2020-11-04 321-334 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MELBOURNE FL
2020-11-04 332-243 0–9 XXXwhole prefix which blocks → TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY

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.