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
2018-09-20 646-978 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2018-09-20 720-730 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2018-09-20 803-868 0–9 XXXall 10 · 4 holders which blocks → PALMETTO TELEPHONE COMMUNICATIONS, LLC - SC 154C BARNWELL SC
2018-09-20 813-522 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPANTH FL
2018-09-20 825-993 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2018-09-20 843-905 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - SC 548E PAMPLICO SC
2018-09-20 850-407 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C PENSACOLA FL
2018-09-20 856-390 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F WOODSTOWN NJ
2018-09-20 857-349 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E WINTHROP MA
2018-09-20 929-491 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN06 NY
2018-09-19 202-919 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2018-09-19 251-351 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E BEATRICE AL
2018-09-19 251-451 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E GOSPORT AL
2018-09-19 251-551 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E PINE APPLE AL
2018-09-19 267-854 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-09-19 438-360 not yet reported which blocks → Bell Mobility 6574 Montreal —
2018-09-19 438-441 not yet reported which blocks → Bell Mobility 6574 Montreal —
2018-09-19 479-339 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F BOLES AR
2018-09-19 479-341 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F CENTERTON AR
2018-09-19 479-342 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F GARFIELD AR
2018-09-19 479-346 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AR 348F GATEWAY AR
2018-09-19 479-348 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AR 348F MAYSVILLE AR
2018-09-19 479-349 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AR 348F SULPHURSPG AR
2018-09-19 574-475 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D LUCERNE IN
2018-09-19 612-712 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2018-09-19 647-315 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-09-19 725-726 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2018-09-19 765-735 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - IN 097D BATTLEGRND IN
2018-09-19 765-767 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D LAFAYETTE IN
2018-09-19 804-979 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DAWN VA
2018-09-19 825-362 not yet reported which blocks → Bell Mobility 6574 Calgary —
2018-09-18 208-603 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID 678B SANDPOINT ID
2018-09-18 218-448 0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 1123 MCGREGOR MN
2018-09-18 249-885 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Sudbury —
2018-09-18 365-833 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Hamilton —
2018-09-18 365-855 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 St. Catharines-Thorold —
2018-09-18 417-360 0–9 XXXall 10 · 2 holders which blocks → MCC TELEPHONY LLC 593K SPRINGFLD MO
2018-09-18 438-630 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2018-09-18 548-883 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Kitchener-Waterloo —
2018-09-18 636-202 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 WARRENTON MO
2018-09-18 657-365 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2018-09-18 806-808 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C PLAINVIEW TX
2018-09-18 862-329 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT VIEW NJ
2018-09-18 873-822 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2018-09-17 207-707 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ME 454F AUGUSTA ME
2018-09-17 207-820 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - ME 454F OLD TOWN ME
2018-09-17 223-210 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J DENVER PA
2018-09-17 236-522 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Chilliwack —
2018-09-17 469-553 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F WAXAHACHIE TX
2018-09-17 510-905 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 OKLD ALMD CA

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.