NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 314-871 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 ST LOUIS MO
— 314-872 not yet reported which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-873 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-874 2XXX3XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
— 314-877 8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-878 not yet reported which blocks → SOUTHWESTERN BELL 9533 CREVECOEUR MO
— 314-879 4XXX which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-880 not yet reported which blocks → PAETEC ITEL, LLC 829J ST LOUIS MO
— 314-881 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ST LOUIS MO
— 314-882 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-885 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 MEHLVILLE MO
— 314-888 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
— 314-889 not yet reported which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-890 not yet reported which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-892 not yet reported which blocks → SOUTHWESTERN BELL 9533 MEHLVILLE MO
— 314-894 not yet reported which blocks → SOUTHWESTERN BELL 9533 MEHLVILLE MO
— 314-895 not yet reported which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-898 2XXX3XXX5XXX6XXX7XXX8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
— 314-899 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
— 314-902 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-903 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-905 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-908 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-909 not yet reported which blocks → SOUTHWESTERN BELL 9533 KIRKWOOD MO
— 314-910 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MO
— 314-913 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-914 2XXX3XXX4XXX5XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-915 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-917 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-918 none assigned yet which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-919 5XXX6XXX7XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-920 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-921 not yet reported which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-922 none assigned yet which blocks → T-MOBILE USA, INC. 6529 LADUE MO
— 314-923 not yet reported which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-927 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-929 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-933 0XXX4XXX6XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-934 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ST LOUIS MO
— 314-935 not yet reported which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-938 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LADUE MO
— 314-941 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-943 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
— 314-945 not yet reported which blocks → SPOK, INC. 6630 ST LOUIS MO
— 314-950 not yet reported which blocks → MO
— 314-951 4XXX8XXX which blocks → SOUTHWESTERN BELL 9533 ST LOUIS MO
— 314-952 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
— 314-953 not yet reported which blocks → SOUTHWESTERN BELL 9533 LADUE MO
— 314-954 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.