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
2021-08-19 579-351 not yet reported which blocks → Fibernetics Corporation 464D Oka —
2021-08-19 579-352 not yet reported which blocks → Fibernetics Corporation 464D St-Eustache —
2021-08-19 602-816 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-08-19 712-692 0XXX1XXX2XXX · 3 holders which blocks → AUREON COMMUNICATIONS, LLC 444G ALBERTCITY IA
2021-08-19 727-633 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWPTRICHEY FL
2021-08-19 772-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PTST LUCIE FL
2021-08-19 782-540 not yet reported which blocks → Aliant Telecom (NS) 8089 Halifax —
2021-08-19 813-861 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H TAMPAEST FL
2021-08-19 825-852 not yet reported which blocks → Iristel Inc. 154E Spruce Grove —
2021-08-19 904-698 0–9 XXXall 10 · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 MACCLENNY FL
2021-08-18 239-371 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FORT MYERS FL
2021-08-18 239-422 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NAPLES FL
2021-08-18 239-722 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H FORT MYERS FL
2021-08-18 262-286 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F KENOSHA WI
2021-08-18 262-433 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H OCONOMOWOC WI
2021-08-18 262-733 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WHITEWATER WI
2021-08-18 272-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H POTTSVILLE PA
2021-08-18 321-364 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E EAU GALLIE FL
2021-08-18 339-231 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J SAUGUS MA
2021-08-18 351-219 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J DANVERS MA
2021-08-18 352-721 0–9 XXXall 10 · 4 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 GAINESVL FL
2021-08-18 352-966 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DUNNELLON FL
2021-08-18 445-207 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PHLDLPHZN1 PA
2021-08-18 507-802 0XXX4XXX6XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLAINVIEW MN
2021-08-18 534-356 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H WAUSAU WI
2021-08-18 561-724 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2021-08-18 725-256 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2021-08-18 774-493 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2021-08-18 775-480 0XXX1XXX2XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MINA NV
2021-08-18 813-834 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2021-08-18 845-828 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
2021-08-18 854-209 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → BERKELEY CABLE TELEVISION INC DBA HOME TELECOM-SC 712C MCLELLANVL SC
2021-08-18 872-899 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHICGOZN01 IL
2021-08-18 878-356 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H WESTNEWTON PA
2021-08-17 206-710 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-17 214-910 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C DLFTWTARPT TX
2021-08-17 234-313 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F YOUNGSTOWN OH
2021-08-17 252-553 0XXX2XXX3XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 MANTEO NC
2021-08-17 346-497 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRING TX
2021-08-17 424-457 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2021-08-17 586-345 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MT CLEMENS MI
2021-08-17 605-801 0XXX1XXX2XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 BELLEFORCH SD
2021-08-17 640-345 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SEAIS CITY NJ
2021-08-17 682-358 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX
2021-08-17 707-910 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → SONIC TELECOM, LLC - CA 433E SEBASTOPOL CA
2021-08-17 727-297 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NWPTRICHEY FL
2021-08-17 737-291 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2021-08-17 769-265 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
2021-08-17 862-380 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWARK NJ
2021-08-17 931-346 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLARKSVL TN

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.