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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2016-01-05 929-215 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
2016-01-05 937-980 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F TROY OH
2016-01-05 970-747 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CO 026D FORTMORGAN CO
2016-01-04 229-598 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D GEORGETOWN GA
2016-01-04 267-710 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PHLDLPHZN4 PA
2016-01-04 304-427 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HILLSBORO WV
2016-01-04 306-914 not yet reported which blocks → Bell Mobility 6574 Saskatoon —
2016-01-04 331-775 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J DOWNERSGRV IL
2016-01-04 385-389 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J OGDEN UT
2016-01-04 423-803 0–9 XXXall 10 · 3 holders which blocks → ELECTRIC POWER BOARD OF CHATTANOOGA 4645 CHATTNOOGA TN
2016-01-04 431-847 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2016-01-04 438-847 not yet reported which blocks → Bell Mobility 6574 Montreal —
2016-01-04 479-777 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F MENA AR
2016-01-04 518-949 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2016-01-04 540-698 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G SHAWSVILLE VA
2016-01-04 585-685 0–9 XXXall 10 · 6 holders which blocks → INTEGRATED PATH COMMUNICATIONS, LLC - NY 271G ROCHESTER NY
2016-01-04 586-241 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ROSEVILLE MI
2016-01-04 587-965 not yet reported which blocks → Bell Mobility 6574 Calgary —
2016-01-04 603-404 0–9 XXXall 10 · 4 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2016-01-04 639-630 not yet reported which blocks → Distributel 081E Saskatoon —
2016-01-04 647-840 not yet reported which blocks → Bell Mobility 6574 Toronto —
2016-01-04 778-854 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2016-01-04 781-732 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LYNN MA
2016-01-04 782-848 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2016-01-04 804-465 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MONTROSS VA
2016-01-04 814-760 0XXX1XXX2XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - PA 547E MCKEAN PA
2016-01-04 931-740 0XXX1XXX2XXX4XXX8XXX · 3 holders which blocks → ONVOY, LLC - TN 525E NORMANDY TN
2016-01-04 978-797 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D ROCKPORT MA
2015-12-31 639-221 not yet reported which blocks → Bell West Inc. 2933 Regina —
2015-12-31 647-841 not yet reported which blocks → Bell Mobility 6574 Toronto —
2015-12-30 226-332 not yet reported which blocks → Bell Mobility 6574 Guelph —
2015-12-30 267-780 0–9 XXXall 10 · 6 holders which blocks → BARR TELL USA, INC. - PA 752H PHLDLPHZN1 PA
2015-12-30 469-758 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CARROLLTON TX
2015-12-30 551-202 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CLIFFSIDE NJ
2015-12-30 551-240 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UNION CITY NJ
2015-12-30 639-220 not yet reported which blocks → Bell West Inc. 2933 Saskatoon —
2015-12-30 682-407 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX
2015-12-30 778-268 not yet reported which blocks → Bell Mobility 6574 Nanaimo —
2015-12-30 781-660 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WEYMOUTH MA
2015-12-30 782-352 not yet reported which blocks → TELUS Integrated Communications 2782 Kingston —
2015-12-30 782-353 not yet reported which blocks → TELUS Integrated Communications 2782 Saulnierville —
2015-12-30 782-354 not yet reported which blocks → TELUS Integrated Communications 2782 Shelburne —
2015-12-30 848-251 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOMS RIVER NJ
2015-12-30 910-407 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E SCOTTSHILL NC
2015-12-30 956-625 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 LAREDO TX
2015-12-30 978-288 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MA 892D BEVERLY MA
2015-12-29 346-321 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHANNELVW TX
2015-12-29 385-250 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - UT 871E PROVO UT
2015-12-29 414-346 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN5 WI
2015-12-29 434-255 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ARVONIA VA

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.