NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2022-01-27 548-798 not yet reported which blocks → Iristel Inc. 154E Chatham —
2022-01-27 551-343 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2022-01-27 551-344 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2022-01-27 551-346 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CLOSTER NJ
2022-01-27 551-347 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2022-01-27 564-229 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 567-737 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J TIFFIN OH
2022-01-27 572-209 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F MINCO OK
2022-01-27 581-685 not yet reported which blocks → Iristel Inc. 154E Sept-Iles —
2022-01-27 608-932 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J LA VALLE WI
2022-01-27 631-349 0XXX1XXX2XXX3XXX4XXX which blocks → ONVOY, LLC- NY 384C ORIENT NY
2022-01-27 657-562 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ORANGE CA
2022-01-27 657-563 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-01-27 659-746 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BESSEMER AL
2022-01-27 667-390 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 RANDALLSTN MD
2022-01-27 667-391 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-01-27 667-392 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ABERDEEN MD
2022-01-27 706-794 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 COLUMBUS GA
2022-01-27 709-797 not yet reported which blocks → Iristel Inc. 154E Bay Roberts —
2022-01-27 719-920 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 COLORDOSPG CO
2022-01-27 720-957 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2022-01-27 725-272 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NV 4805 LAS VEGAS NV
2022-01-27 737-315 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J SAN MARCOS TX
2022-01-27 743-649 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINSTN SAL NC
2022-01-27 774-518 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FALL RIVER MA
2022-01-27 774-519 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WORCESTER MA
2022-01-27 775-493 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 FALLON NV
2022-01-27 781-921 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MEDFORD MA
2022-01-27 782-834 not yet reported which blocks → Iristel Inc. 154E Musquodoboit Harbour —
2022-01-27 839-215 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F DENMARK SC
2022-01-27 839-846 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BATESBURG SC
2022-01-27 840-500 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BIGBEAR CY CA
2022-01-27 854-832 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MONCKS COR SC
2022-01-27 856-239 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 HADDON HTS NJ
2022-01-27 857-395 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2022-01-27 862-394 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PASSAIC NJ
2022-01-27 872-334 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN06 IL
2022-01-27 872-337 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN05 IL
2022-01-27 872-343 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN07 IL
2022-01-27 872-346 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN04 IL
2022-01-27 872-355 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2022-01-27 872-453 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN09 IL
2022-01-27 872-627 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN02 IL
2022-01-27 872-674 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN08 IL
2022-01-27 908-560 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BERNARDSVL NJ
2022-01-27 912-619 0XXX1XXX2XXX8XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J FOLKSTON GA
2022-01-27 920-914 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BERLIN WI
2022-01-27 938-723 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOULTON AL
2022-01-27 941-368 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PTCHARLOTT FL
2022-01-27 945-786 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H ENNIS TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.