NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2021-01-19 934-946 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SAYVILLE NY
2021-01-18 213-548 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2021-01-18 332-242 0–9 XXXall 10 · 3 holders which blocks → UCOMTEL INC. 534J NWYRCYZN01 NY
2021-01-18 431-207 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2021-01-18 469-963 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C BARDWELL TX
2021-01-18 470-761 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D CANTON GA
2021-01-18 470-801 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D MONROE GA
2021-01-18 470-821 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - GA 067D WINDER GA
2021-01-18 506-271 not yet reported which blocks → Bell Mobility Aliant 329A Saint John —
2021-01-18 609-810 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C ATLNTIC CY NJ
2021-01-18 657-476 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2021-01-18 657-479 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2021-01-18 667-298 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ABERDEEN MD
2021-01-18 689-366 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - FL 937C WINDERMERE FL
2021-01-18 754-258 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 CORAL SPG FL
2021-01-18 762-281 0XXX1XXX2XXX4XXX9XXX · 3 holders which blocks → ONVOY, LLC - GA 067D COMER GA
2021-01-18 762-341 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → ONVOY, LLC - GA 067D MAXEYS GA
2021-01-18 762-351 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → ONVOY, LLC - GA 067D NICHOLSON GA
2021-01-18 762-371 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → ONVOY, LLC - GA 067D YATESVILLE GA
2021-01-18 845-585 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C KINGSTON NY
2021-01-18 845-710 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H ROSENDALE NY
2021-01-18 856-610 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C CAMDEN NJ
2021-01-18 862-810 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C NEWARK NJ
2021-01-18 872-279 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → UCOMTEL INC. 534J CHICGOZN01 IL
2021-01-18 945-245 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C MAYPEARL TX
2021-01-18 951-569 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2021-01-18 980-306 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 HUNTERSVL NC
2021-01-15 217-986 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CSC WIRELESS, LLC 425J SPRINGFLD IL
2021-01-15 223-247 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E DOVER PA
2021-01-15 229-920 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D ALBANY GA
2021-01-15 239-522 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C EVERGLADES FL
2021-01-15 239-544 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C NAPLES FL
2021-01-15 254-451 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CHINA SPG TX
2021-01-15 254-453 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - TX 903C IRENE TX
2021-01-15 307-318 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WY 081F WRIGHT WY
2021-01-15 325-567 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BANGS TX
2021-01-15 325-789 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H JUNCTION TX
2021-01-15 425-364 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BOTHELL WA
2021-01-15 438-260 not yet reported which blocks → Zayo Canada Inc. 8304 Montreal —
2021-01-15 470-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2021-01-15 478-346 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WRIGHTSVL GA
2021-01-15 478-910 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D MACON GA
2021-01-15 479-412 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTERTON AR
2021-01-15 502-406 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - KY 987E NEWLIBERTY KY
2021-01-15 571-644 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-15 579-418 not yet reported which blocks → Fibernetics Corporation 464D Napierville —
2021-01-15 579-419 not yet reported which blocks → Fibernetics Corporation 464D St-Blaise —
2021-01-15 605-736 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BROOKINGS SD
2021-01-15 681-267 0XXX2XXX9XXX · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 MOOREFIELD WV
2021-01-15 681-274 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SPENCER WV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.