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
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
2017-03-10 937-724 0XXX1XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks → TELNYX LLC 073H SPRING VLY OH
2017-03-10 985-666 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H COVINGTON LA
2017-03-09 267-730 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 QUAKERTOWN PA
2017-03-09 270-429 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - KY 896E ELKTON KY
2017-03-09 270-494 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - KY 896E ROBARDS KY
2017-03-09 270-550 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → ONVOY, LLC - KY 896E DRAKESBORO KY
2017-03-09 270-966 0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - KY 896E LA FAYETTE KY
2017-03-09 412-510 0–9 XXXall 10 · 2 holders which blocks → XO COMMUNICATIONS SERVICES, INC. - PA 7341 PTTSBGZON1 PA
2017-03-09 470-633 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 ATLANTA GA
2017-03-09 505-666 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H SANTA FE NM
2017-03-09 531-888 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H O NEILL NE
2017-03-09 570-936 0–9 XXXall 10 · 8 holders which blocks → METROPCS, INC. 5562 CARBONDALE PA
2017-03-09 575-999 0–9 XXXall 10 · 7 holders which blocks → TELNYX LLC 073H TAOS NM
2017-03-09 609-991 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C BEACHHAVEN NJ
2017-03-09 609-993 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C TUCKERTON NJ
2017-03-09 646-904 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NWYRCYZN01 NY
2017-03-09 701-561 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FARGO ND
2017-03-09 724-936 0–9 XXXall 10 · 8 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEW CASTLE PA
2017-03-09 762-235 0–9 XXXall 10 · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ROME GA
2017-03-09 804-666 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H BETHIA VA
2017-03-09 816-927 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H LEESSUMMIT MO
2017-03-09 856-443 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 WOODBURY NJ
2017-03-08 310-620 0–9 XXXall 10 · 5 holders which blocks → INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H BEVERLYHLS CA
2017-03-08 337-382 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2017-03-08 431-727 not yet reported which blocks → Bell Mobility 6574 Melita —
2017-03-08 434-425 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H DANVILLE VA
2017-03-08 502-910 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BARDSTOWN KY
2017-03-08 515-500 0–9 XXXall 10 · 7 holders which blocks → INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H BOONE IA
2017-03-08 517-249 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2017-03-08 571-655 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H BRADDOCK VA
2017-03-08 660-999 0XXX6XXX9XXX · 2 holders which blocks → TELNYX LLC 073H CHILLICOTH MO
2017-03-08 701-999 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H BELFIELD ND
2017-03-08 774-946 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 WHITINSVL MA
2017-03-08 802-800 0XXX1XXX2XXX4XXX7XXX8XXX · 4 holders which blocks → INTEGRATED PATH COMMUNICATIONS-VERMONT LLC - VT 989H BURLINGTON VT
2017-03-08 816-708 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7594 KANSASCITY MO
2017-03-08 843-949 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BLUFFTON SC
2017-03-08 854-333 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H WALTERBORO SC
2017-03-08 908-381 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H SOMERVILLE NJ
2017-03-08 910-767 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E DUNN-CMBLD NC
2017-03-08 937-616 0–9 XXXall 10 · 2 holders which blocks → TELNYX LLC 073H XENIA OH
2017-03-08 937-797 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H BEAVERCREK OH
2017-03-08 947-414 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PONTIAC MI
2017-03-07 240-531 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H WSHNGTNZN3 MD
2017-03-07 262-277 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H NEWBURG WI
2017-03-07 262-399 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H WAUKESHA WI
2017-03-07 262-525 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H HUBERTUS WI
2017-03-07 431-252 not yet reported which blocks → Bell Mobility 6574 Amaranth —
2017-03-07 431-253 not yet reported which blocks → Bell Mobility 6574 Ashern —
2017-03-07 431-254 not yet reported which blocks → Bell Mobility 6574 Bissett —
2017-03-07 431-255 not yet reported which blocks → Bell Mobility 6574 Boissevain —

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.