NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
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
2010-02-17 709-272 not yet reported which blocks → Bragg Communications Inc. 4878 Degras —
2010-02-17 709-274 not yet reported which blocks → Bragg Communications Inc. 4878 Jeffreys —
2010-02-17 709-275 not yet reported which blocks → Bragg Communications Inc. 4878 St. George's —
2010-02-17 709-278 not yet reported which blocks → Bragg Communications Inc. 4878 Port Au Port —
2010-02-17 709-283 not yet reported which blocks → Bragg Communications Inc. 4878 Stephenville —
2010-02-17 709-444 not yet reported which blocks → Bragg Communications Inc. 4878 Stephenville Crossing —
2010-02-17 762-338 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ROYSTON GA
2010-02-17 865-296 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2010-02-16 202-604 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2010-02-16 248-716 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E COMMERCE MI
2010-02-16 276-639 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 NORTON VA
2010-02-16 334-245 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF ALABAMA, LLC - AL 7327 MONTGOMERY AL
2010-02-16 501-422 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CABOT AR
2010-02-16 507-556 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E CALEDONIA MN
2010-02-16 515-528 0–9 XXXall 10 · 3 holders which blocks → MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-02-16 563-424 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY OF IOWA, LLC - IA 751F DAVENPORT IA
2010-02-16 563-822 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → MCC TELEPHONY LLC 593K MANCHESTER IA
2010-02-16 571-409 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 OCCOQUAN VA
2010-02-16 615-617 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MURFREESBO TN
2010-02-16 615-878 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 NASHVILLE TN
2010-02-16 616-438 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C GRAND RPDS MI
2010-02-16 616-439 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E CEDAR SPG MI
2010-02-16 678-670 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2010-02-16 712-220 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K CARROLL IA
2010-02-16 712-588 1XXX5XXX7XXX8XXX · 3 holders which blocks → MCC TELEPHONY LLC 593K AUDUBON IA
2010-02-16 828-541 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 SUIT NC
2010-02-16 843-648 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C FOLLYBEACH SC
2010-02-16 864-256 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 SPARTANBG SC
2010-02-16 865-279 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 SHARPSCHPL TN
2010-02-16 912-584 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 WAYCROSS GA
2010-02-15 218-506 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E COOK MN
2010-02-15 239-500 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J FORT MYERS FL
2010-02-15 256-970 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J HUNTSVILLE AL
2010-02-15 276-299 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F PENINGTNGP VA
2010-02-15 331-588 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST CHARLES IL
2010-02-15 336-891 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E RUFFIN NC
2010-02-15 352-500 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J GAINESVL FL
2010-02-15 571-306 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F HERNDON VA
2010-02-15 571-445 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F HAYMARKET VA
2010-02-15 615-576 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F VANLEER TN
2010-02-15 615-669 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F NASHVILLE TN
2010-02-15 702-246 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAUGHLIN NV
2010-02-15 727-266 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
2010-02-15 760-893 0–9 XXXall 10 · 3 holders which blocks → PACIFIC BELL 9740 OCSD CRLS CA
2010-02-15 772-500 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J PTST LUCIE FL
2010-02-15 804-552 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F FIFE VA
2010-02-15 815-400 1XXX3XXX6XXX7XXX · 4 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MORRISON IL
2010-02-15 828-548 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CLAREMONT NC
2010-02-15 828-619 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E OLD FORT NC
2010-02-15 850-500 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J PENSACOLA FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.