NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2001-10-23 715-271 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EAU CLAIRE WI
2001-10-23 727-267 1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NWPTRICHEY FL
2001-10-23 727-667 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLEARWATER FL
2001-10-23 803-588 9XXX which blocks → PAETEC ITEL, LLC 829J BISHOPVL SC
2001-10-23 803-589 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WINNSBORO SC
2001-10-23 813-323 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2001-10-23 813-708 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PLANT CITY FL
2001-10-23 815-518 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → FIRST COMMUNICATIONS, LLC 460K COAL CITY IL
2001-10-23 830-642 1XXX2XXX3XXX4XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 LACOSTE TX
2001-10-23 830-689 3XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 MEDINALAKE TX
2001-10-23 843-435 not yet reported which blocks → PAETEC ITEL, LLC 829J JOHNSONVL SC
2001-10-23 848-203 3XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PERTHAMBOY NJ
2001-10-23 848-391 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWBRNSWCK NJ
2001-10-23 862-684 4XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 MT VIEW NJ
2001-10-23 863-393 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAKELAND FL
2001-10-23 903-761 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WHITESBORO TX
2001-10-23 979-665 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J FREEPORT TX
2001-10-23 985-981 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAMMOND LA
2001-10-23 985-991 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HOUMA LA
2001-10-22 205-245 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J THORSBY AL
2001-10-22 205-416 2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J REFORM AL
2001-10-22 256-380 3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SKYLINE AL
2001-10-22 262-378 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUKWONAGO WI
2001-10-22 281-936 0XXX1XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 HOUSTON TX
2001-10-22 360-232 2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LONGVIEW WA
2001-10-22 360-597 3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J VANCOUVER WA
2001-10-22 360-689 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 SILVERDALE WA
2001-10-22 417-661 6XXX8XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEVADA MO
2001-10-22 425-361 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 HALLS LAKE WA
2001-10-22 517-743 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PORTLAND MI
2001-10-22 517-797 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J HILLSDALE MI
2001-10-22 561-305 not yet reported which blocks → METROPCS, INC. 5562 BOCA RATON FL
2001-10-22 561-324 3XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WPALMBEACH FL
2001-10-22 561-502 not yet reported which blocks → METROPCS, INC. 5562 WPALMBEACH FL
2001-10-22 561-634 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2001-10-22 772-240 3XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 PTST LUCIE FL
2001-10-22 772-480 2XXX3XXX5XXX7XXX8XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 VERO BEACH FL
2001-10-22 772-501 not yet reported which blocks → METROPCS, INC. 5562 VERO BEACH FL
2001-10-22 772-631 0XXX1XXX2XXX3XXX4XXX5XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 STUART FL
2001-10-22 785-806 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOPEKA KS
2001-10-22 786-288 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NORTH DADE FL
2001-10-22 828-561 not yet reported which blocks → PAETEC ITEL, LLC 829J GUNTERTOWN NC
2001-10-22 828-562 not yet reported which blocks → PAETEC ITEL, LLC 829J SEVIER NC
2001-10-22 828-563 not yet reported which blocks → PAETEC ITEL, LLC 829J MICAVILLE NC
2001-10-22 904-651 not yet reported which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2001-10-22 904-864 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSONVL FL
2001-10-22 915-926 0XXX6XXX9XXX which blocks → SOUTHWESTERN BELL 9533 EL PASO TX
2001-10-22 954-709 not yet reported which blocks → METROPCS, INC. 5562 FTLAUDERDL FL
2001-10-22 954-778 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DEERFLDBCH FL
2001-10-19 204-573 not yet reported which blocks → MTS Inc. 991B Brandon —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.