NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2020-03-27 949-569 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LAGUNA BCH CA
2020-03-26 206-561 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2020-03-26 206-627 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2020-03-26 325-222 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SAN ANGELO TX
2020-03-26 332-232 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2020-03-26 346-424 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SATSUMA TX
2020-03-26 346-425 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2020-03-26 360-206 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CENTRALIA WA
2020-03-26 407-819 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ORLANDO FL
2020-03-26 425-331 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ISSAQUAH WA
2020-03-26 469-797 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2020-03-26 502-586 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 861C LOUISVILLE KY
2020-03-26 619-679 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2020-03-26 631-984 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J DEER PARK NY
2020-03-26 639-449 not yet reported which blocks → Iristel Inc. 154E Watrous —
2020-03-26 650-531 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2020-03-26 786-761 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MIAMI FL
2020-03-26 813-590 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPASTH FL
2020-03-26 878-678 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2020-03-26 949-578 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SADLBK VLY CA
2020-03-26 972-209 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-03-25 202-941 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2020-03-25 202-963 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2020-03-25 213-469 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2020-03-25 213-566 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 11 CA
2020-03-25 213-755 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LSAN DA 08 CA
2020-03-25 279-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FOLSOM CA
2020-03-25 413-368 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 116E SPRINGFLD MA
2020-03-25 559-509 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TULARE CA
2020-03-25 612-447 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 612-450 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 612-453 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 618-330 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E KAMPSVILLE IL
2020-03-25 618-348 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E HERRICK IL
2020-03-25 618-350 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E MARINE IL
2020-03-25 618-358 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E NEW BADEN IL
2020-03-25 651-378 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 720-716 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 DENVER CO
2020-03-25 747-345 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFN PACM CA
2020-03-25 763-327 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 763-328 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 928-270 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SPRINGERVL AZ
2020-03-25 952-245 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 952-246 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-24 208-992 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 815C BOISE ID
2020-03-24 332-227 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2020-03-24 385-341 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-03-24 437-624 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-03-24 438-458 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-03-24 438-471 not yet reported which blocks → Bell Mobility 6574 Montreal —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.