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
2013-09-23 916-887 0–9 XXXwhole prefix which blocks → PACIFIC BELL 9740 SCRM MAIN CA
2013-09-23 952-222 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2013-09-20 224-814 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 ROUND LAKE IL
2013-09-20 234-817 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 AKRON OH
2013-09-20 312-940 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2013-09-20 317-993 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CARMEL IN
2013-09-20 414-249 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-09-20 515-443 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-09-20 567-323 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ADARIO OH
2013-09-20 618-802 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GRANITE CY IL
2013-09-20 636-706 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ST PETERS MO
2013-09-20 639-999 not yet reported which blocks → TELUS Mobility 8303 Regina —
2013-09-19 252-251 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J PINETOPS NC
2013-09-19 313-307 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLCV - MI 543C DETROITZN4 MI
2013-09-19 314-201 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LADUE MO
2013-09-19 314-728 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-09-19 336-365 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBORO NC
2013-09-19 352-801 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LEESBURG FL
2013-09-19 407-907 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTERPARK FL
2013-09-19 470-224 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA NW GA
2013-09-19 561-701 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2013-09-19 587-592 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2013-09-19 587-594 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2013-09-19 614-943 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 DUBLIN OH
2013-09-19 615-490 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J NASHVILLE TN
2013-09-19 639-998 not yet reported which blocks → TELUS Mobility 8303 Saskatoon —
2013-09-19 702-550 0–9 XXXall 10 · 3 holders which blocks → UTILITY TELECOM GROUP, LLC - NV 811D LAS VEGAS NV
2013-09-19 709-216 not yet reported which blocks → TELUS Mobility 8303 Corner Brook —
2013-09-19 709-986 not yet reported which blocks → TELUS Mobility 8303 St. John's —
2013-09-19 731-203 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F BOLIVAR TN
2013-09-19 873-382 not yet reported which blocks → TELUS Quebec 2243 Drummondville —
2013-09-19 873-389 not yet reported which blocks → TELUS Quebec 2243 Sherbrooke —
2013-09-19 954-541 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FTLAUDERDL FL
2013-09-19 971-703 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F PORTLAND OR
2013-09-18 207-307 0–9 XXXall 10 · 6 holders which blocks → OXFORD CNTY TELEPHONE SVC CO, DBA OXFORD NETWRKS 5205 BANGOR ME
2013-09-18 210-727 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 406-389 0–9 XXXall 10 · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HELENA MT
2013-09-18 440-719 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAGRINFLS OH
2013-09-18 902-359 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2013-09-18 979-309 1XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH HILL TX
2013-09-17 214-974 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F SEAGOVILLE TX
2013-09-17 240-360 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2013-09-17 385-887 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9636 MIDVALE UT
2013-09-17 469-813 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CELINA TX
2013-09-17 506-920 not yet reported which blocks → Fido Solutions Inc. 8820 Richibucto —
2013-09-17 506-922 not yet reported which blocks → Fido Solutions Inc. 8820 Shediac —
2013-09-17 506-923 not yet reported which blocks → Fido Solutions Inc. 8820 St. George —
2013-09-17 506-924 not yet reported which blocks → Fido Solutions Inc. 8820 Doaktown —
2013-09-17 506-925 not yet reported which blocks → Fido Solutions Inc. 8820 Shippagan —
2013-09-17 506-926 not yet reported which blocks → Fido Solutions Inc. 8820 Bouctouche —

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.